作者:毁三观大人 Dm

校对:Flame

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人云亦云

关于检测Cobalt Strike的方法有很多,而网上有一些文章会告诉大家如何修改所谓的特征值,但是这些方法实际上存在一定的误导和盲区

一般发现Cobalt Strike服务器的途径有以下几种(简单分类,不准确,勿喷)

  1. 样本分析

  2. 中马回连

  3. 黑客连主控端

  4. 扫描发现

这里被使用的比较多的就是扫描发现,同时网上一些文章提到Cobalt Strike默认的SSL/TLS证书是固定的,所以一般都是使用这个证书作为特征值来发现Cobalt Strike服务器

所以,今天我们主要讨论这个默认SSL/TLS证书的问题

证书修改

现在让我们提取这个证书的相关信息

根据网上一些文章的修改方法,我们需要使用keytool修改证书信息,方法如下

默认的证书具有很明显的特征,例如

    O=cobaltstrike, OU=AdvancedPenTesting, CN=Major Cobalt Strike

    我们拿这个信息去检索就可以发现许多Cobalt Strike服务器

    但是这里忽略了一个问题,你到底修改的是什么证书,是主机上线的时候使用的吗?

    这个证书是teamserver主控端使用的加密证书(默认端口50050)

    修改这个证书以后teamserver服务器主控端的特征是没了

    之前有一些人hunting C2服务器使用的就是这个规则

    例如在fofa.so中,就有一条规则叫

      protocol=="cobaltstrike"

      当然,我们也可以使用

        cert="Major Cobalt Strike"

        直接搜索

        这里需要注意,使用

          cert="Major Cobalt Strike"

          搜索会发现有一些主机并没有被标注为Cobalt Strike服务器

          (存在漏网之鱼

          当然为了保证数据的时效性,我们在fofa.so搜索的时候最好加上

            after="2020-01-01"

            重要的分割线!!!!注意!!!!

            但是!https上线使用的证书,并不是上边我们修改的那一个,并且这个证书也是默认的...

            证书信息如下图:

            如果想要修改这个证书,需要修改Malleable C2 profile

            查看官方文档

            https://www.cobaltstrike.com/help-malleable-c2

            其中Self-signed Certificates with SSL Beacon和Valid SSL Certificates with SSL Beacon是用来修改https上线使用的证书的,Self-signed Certificates with SSL Beacon根据字母意思理解,就是自己设定的自签名证书,还有如果使用了Valid SSL Certificates with SSL Beacon,我们在之前通过keytool设置的证书也可以用的上,但是这里应该让我们使用的是真实的证书,不管是偷来的还是买来的,用就完了

            Let"s Hunt!

            使用fofa.so搜索相关证书信息

              cert="73:6B:5E:DB:CF:C9:19:1D:5B:D0:1F:8C:E3:AB:56:38:18:9F:02:4F" && after="2020-01-01"

              使用censys.io搜索相关信息

                443.https.tls.certificate.parsed.fingerprint_sha256:87f2085c32b6a2cc709b365f55873e207a9caa10bffecf2fd16d3cf9d94d390c

                这里我们可以发现一些有趣的现象,例如有些服务器的50050端口也开了,teamserver主控端的证书确实也是修改了,这证明攻击者还是会看一下文章学习如何去特征,但不幸的是只修改了一个

                仅仅是扫描ip就能拿到所有证书吗?不能,我们也需要扫描域名,还有就是https也不一定只开在443端口上

                据我们了解,好多人搭建C2服务器的方法都比较原始,比如在某云搭建C2服务器,不会使用slb/elb转发请求,不会使用security group控制访问,不会使用一些高明的隐藏C2的方法。并且烂大街的Domain fronting、CDN上线、高信誉服务等等也不会使用,就是上线梭哈一把刷.....真的是给蓝队兄弟们一条生路

                等等,到这就完了吗?

                检测加密流量

                如果这些信息都修改了我们该怎么办那?

                实际上还是有方法去检测的

                我们可以参考https://github.com/salesforce/ja3这个项目

                简单科普一下JA3

                JA3方法用于收集Client Hello数据包中以下字段的十进制字节值:版本、可接受的密码、扩展列表、椭圆曲线密码和椭圆曲线密码格式。然后,它将这些值串联在一起,使用“,”来分隔各个字段,同时,使用“-”来分隔各个字段中的各个值。

                这里相当于把支持的TLS扩展信息,都收集起来当作一个特征值来用(除了客户端发起的,还有关于服务器的JA3S)

                这其实算一种降维打击,并且我们发现主流在线沙箱、主流IDS大都支持了JA3/JA3S指纹检测

                因为本篇文章主要是讨论Cobalt Strike默认证书的问题,所以在这里就不过多介绍JA3/JA3S相关的信息了

                IOCs:

                2[.]56.212.165

                3[.]106.130.137

                3[.]11.62.87

                3[.]121.32.171

                3[.]128.154.6

                3[.]129.110.164

                3[.]129.19.175

                3[.]130.5.32

                3[.]130.75.203

                3[.]135.199.11

                3[.]16.137.85

                3[.]218.141.232

                3[.]22.141.197

                3[.]22.195.74

                3[.]234.252.217

                3[.]234.255.7

                3[.]236.183.143

                3[.]25.149.16

                3[.]25.162.235

                3[.]25.177.162

                3[.]25.180.21

                3[.]80.164.184

                3[.]95.136.233

                3[.]95.159.27

                5[.]149.253.199

                5[.]180.99.65

                5[.]188.206.219

                5[.]39.216.203

                5[.]39.217.115

                5[.]39.221.60

                5[.]45.64.36

                5[.]8.18.50

                8[.]210.152.83

                8[.]210.52.10

                13[.]124.92.145

                13[.]211.161.113

                13[.]211.170.37

                13[.]211.180.107

                13[.]229.222.207

                13[.]236.208.125

                13[.]54.198.47

                13[.]59.192.233

                13[.]91.4.128

                18[.]130.144.147

                18[.]130.155.157

                18[.]163.206.98

                18[.]163.46.190

                18[.]166.31.113

                18[.]215.167.27

                18[.]216.51.155

                18[.]217.19.176

                18[.]217.54.127

                18[.]224.234.85

                23[.]101.204.40

                23[.]106.215.179

                23[.]248.162.142

                23[.]254.202.217

                23[.]254.228.89

                23[.]254.229.35

                23[.]254.230.60

                23[.]82.185.91

                23[.]82.185.96

                23[.]83.248.105

                27[.]102.118.181

                27[.]102.118.187

                27[.]102.118.190

                31[.]14.40.230

                31[.]210.91.217

                31[.]220.43.160

                31[.]44.184.125

                31[.]44.184.131

                31[.]44.184.48

                31[.]44.184.49

                31[.]44.184.50

                31[.]44.184.51

                31[.]44.184.53

                31[.]44.184.55

                34[.]204.3.10

                34[.]209.40.26

                34[.]212.83.227

                34[.]221.2.201

                34[.]224.157.70

                34[.]230.68.206

                34[.]238.192.43

                34[.]67.180.214

                34[.]80.144.150

                34[.]84.39.173

                34[.]87.76.219

                34[.]92.237.246

                34[.]92.57.181

                34[.]94.33.19

                34[.]96.129.197

                34[.]96.245.66

                34[.]97.55.204

                35[.]164.172.115

                35[.]176.207.20

                35[.]201.164.132

                35[.]203.173.196

                35[.]225.244.45

                35[.]234.156.244

                35[.]235.89.222

                35[.]241.125.159

                36[.]133.35.7

                39[.]100.119.37

                39[.]100.233.99

                39[.]100.65.99

                39[.]100.72.108

                39[.]101.174.86

                39[.]101.207.137

                39[.]101.207.158

                39[.]102.37.102

                39[.]102.40.225

                39[.]102.52.75

                39[.]104.162.182

                39[.]105.106.14

                39[.]105.202.243

                39[.]105.229.27

                39[.]105.23.21

                39[.]105.24.37

                39[.]105.55.133

                39[.]105.59.107

                39[.]105.69.107

                39[.]106.107.82

                39[.]106.144.55

                39[.]106.205.34

                39[.]106.21.92

                39[.]106.219.95

                39[.]106.223.146

                39[.]106.81.105

                39[.]106.85.139

                39[.]106.9.248

                39[.]107.101.223

                39[.]107.111.157

                39[.]107.221.136

                39[.]107.231.0

                39[.]107.59.30

                39[.]107.99.0

                39[.]108.181.99

                39[.]108.185.207

                39[.]108.195.174

                39[.]108.236.227

                39[.]108.5.55

                39[.]108.95.18

                39[.]96.1.24

                39[.]96.10.181

                39[.]96.12.238

                39[.]96.13.114

                39[.]96.63.97

                39[.]97.126.8

                39[.]97.187.94

                39[.]97.188.94

                39[.]97.232.51

                39[.]98.157.103

                39[.]98.171.162

                39[.]98.203.19

                40[.]122.106.213

                40[.]127.129.199

                40[.]70.64.23

                40[.]73.6.221

                42[.]159.86.108

                43[.]224.35.134

                43[.]225.30.90

                43[.]226.148.151

                43[.]226.153.250

                43[.]226.26.242

                43[.]240.15.68

                43[.]242.201.199

                43[.]246.208.208

                43[.]246.208.225

                43[.]246.208.240

                43[.]248.124.189

                45[.]10.20.166

                45[.]11.180.108

                45[.]11.180.220

                45[.]11.79.20

                45[.]113.2.107

                45[.]114.10.17

                45[.]124.64.53

                45[.]134.168.146

                45[.]137.10.116

                45[.]138.172.81

                45[.]138.209.75

                45[.]142.124.196

                45[.]145.185.68

                45[.]153.241.16

                45[.]192.118.162

                45[.]192.118.163

                45[.]192.118.164

                45[.]192.118.165

                45[.]192.118.166

                45[.]248.85.20

                45[.]32.116.138

                45[.]32.122.112

                45[.]32.122.152

                45[.]32.32.186

                45[.]32.62.198

                45[.]32.78.66

                45[.]61.136.32

                45[.]61.136.46

                45[.]66.250.14

                45[.]76.106.22

                45[.]76.158.91

                45[.]76.183.78

                45[.]76.208.172

                45[.]76.25.185

                45[.]77.13.57

                45[.]77.143.131

                45[.]77.172.168

                45[.]77.174.46

                45[.]77.18.248

                45[.]77.249.181

                45[.]77.91.11

                45[.]78.67.211

                45[.]78.9.49

                45[.]82.79.211

                45[.]83.140.231

                45[.]83.237.19

                46[.]166.128.234

                46[.]166.129.169

                46[.]166.129.170

                46[.]166.176.140

                46[.]17.98.192

                46[.]21.147.5

                46[.]255.211.20

                46[.]4.157.54

                47[.]100.136.26

                47[.]100.46.70

                47[.]100.48.156

                47[.]100.55.126

                47[.]100.77.190

                47[.]100.89.120

                47[.]101.11.214

                47[.]101.130.253

                47[.]101.149.183

                47[.]101.177.45

                47[.]101.208.219

                47[.]101.35.67

                47[.]101.62.0

                47[.]102.110.39

                47[.]102.86.216

                47[.]103.207.83

                47[.]103.220.119

                47[.]103.220.165

                47[.]103.29.187

                47[.]103.62.94

                47[.]104.108.112

                47[.]104.11.169

                47[.]104.193.7

                47[.]104.238.128

                47[.]104.77.93

                47[.]104.82.12

                47[.]105.146.99

                47[.]105.180.183

                47[.]105.99.5

                47[.]106.70.58

                47[.]107.102.61

                47[.]107.108.38

                47[.]107.136.247

                47[.]108.113.23

                47[.]108.153.115

                47[.]108.60.37

                47[.]110.145.60

                47[.]110.228.171

                47[.]112.184.59

                47[.]113.103.131

                47[.]113.126.57

                47[.]113.94.95

                47[.]114.45.227

                47[.]114.93.159

                47[.]114.93.194

                47[.]115.125.106

                47[.]115.38.42

                47[.]240.43.238

                47[.]240.54.247

                47[.]244.0.247

                47[.]244.13.36

                47[.]244.14.7

                47[.]244.218.224

                47[.]245.12.138

                47[.]245.31.124

                47[.]52.161.9

                47[.]56.151.214

                47[.]56.169.92

                47[.]56.253.186

                47[.]57.186.166

                47[.]75.42.43

                47[.]75.55.181

                47[.]75.86.225

                47[.]91.221.115

                47[.]91.242.27

                47[.]92.155.231

                47[.]92.219.198

                47[.]92.239.244

                47[.]92.255.176

                47[.]93.116.160

                47[.]93.12.191

                47[.]93.229.0

                47[.]94.102.248

                47[.]94.136.27

                47[.]94.14.145

                47[.]94.154.108

                47[.]94.228.41

                47[.]94.96.209

                47[.]95.115.1

                47[.]95.119.10

                47[.]95.194.251

                47[.]95.205.52

                47[.]97.98.237

                47[.]98.131.192

                47[.]98.156.92

                47[.]98.162.206

                47[.]98.166.253

                47[.]98.239.204

                47[.]98.244.206

                47[.]98.247.45

                47[.]99.48.241

                47[.]99.72.130

                49[.]232.20.75

                49[.]232.239.196

                49[.]232.27.213

                49[.]232.39.67

                49[.]233.132.10

                49[.]233.137.7

                49[.]233.155.141

                49[.]233.73.185

                49[.]233.78.149

                49[.]233.85.7

                49[.]233.89.89

                49[.]234.105.212

                49[.]234.155.24

                49[.]234.239.23

                49[.]234.5.74

                49[.]234.64.118

                49[.]234.93.171

                49[.]234.94.85

                49[.]235.119.2

                49[.]235.144.34

                49[.]235.158.131

                49[.]235.166.224

                49[.]235.199.136

                49[.]235.200.123

                49[.]235.204.16

                49[.]235.212.74

                49[.]235.217.243

                49[.]235.22.75

                49[.]235.223.77

                49[.]235.23.207

                49[.]235.23.236

                49[.]235.244.235

                49[.]235.40.131

                49[.]235.42.77

                49[.]235.50.54

                49[.]235.60.144

                49[.]235.90.230

                50[.]112.70.12

                51[.]15.136.48

                51[.]210.87.117

                51[.]83.200.186

                51[.]91.79.126

                52[.]14.171.234

                52[.]14.65.166

                52[.]147.4.139

                52[.]166.232.140

                52[.]175.218.135

                52[.]22.35.45

                52[.]229.22.93

                52[.]87.210.1

                52[.]90.135.23

                52[.]91.46.68

                52[.]91.75.52

                54[.]153.242.99

                54[.]169.240.239

                54[.]172.42.32

                54[.]174.145.85

                54[.]175.230.166

                54[.]201.107.45

                54[.]206.20.207

                54[.]212.69.111

                54[.]213.249.7

                54[.]214.197.200

                54[.]246.146.207

                54[.]252.206.69

                54[.]252.210.126

                54[.]253.108.178

                54[.]253.244.200

                54[.]80.166.26

                60[.]163.129.202

                60[.]205.3.82

                61[.]141.222.100

                62[.]113.117.167

                63[.]142.243.214

                63[.]34.87.167

                64[.]128.143.70

                64[.]225.114.141

                64[.]227.121.168

                64[.]227.6.38

                64[.]44.133.156

                65[.]49.133.221

                65[.]49.135.123

                65[.]49.224.215

                66[.]152.191.41

                66[.]42.62.80

                69[.]30.206.250

                69[.]30.232.138

                69[.]30.232.139

                69[.]30.232.140

                69[.]30.232.141

                69[.]30.232.142

                74[.]118.138.159

                78[.]128.114.113

                78[.]129.165.207

                78[.]142.18.157

                78[.]142.194.114

                78[.]94.208.254

                79[.]141.162.41

                81[.]70.19.111

                81[.]70.30.97

                83[.]164.140.60

                85[.]92.108.85

                85[.]93.20.114

                88[.]214.26.29

                89[.]45.4.135

                91[.]121.76.158

                91[.]208.184.81

                91[.]241.19.10

                92[.]223.105.130

                92[.]42.14.133

                93[.]115.23.169

                94[.]100.18.43

                94[.]156.189.168

                94[.]232.40.176

                94[.]232.43.237

                95[.]141.41.18

                95[.]142.40.121

                95[.]179.134.194

                95[.]179.201.34

                95[.]179.228.227

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                99[.]79.101.225

                99[.]81.122.12

                100[.]24.234.117

                100[.]24.56.227

                100[.]25.151.21

                101[.]132.116.202

                101[.]132.236.129

                101[.]132.33.79

                101[.]133.137.195

                101[.]200.147.217

                101[.]200.164.199

                101[.]200.53.21

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                101[.]200.87.178

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                101[.]37.24.50

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                103[.]147.12.5

                103[.]150.8.146

                103[.]193.4.11

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                103[.]214.165.213

                103[.]224.82.171

                103[.]238.224.138

                103[.]242.134.79

                103[.]254.75.240

                103[.]255.179.187

                103[.]39.108.20

                103[.]45.116.10

                103[.]45.129.67

                103[.]45.173.221

                103[.]56.53.100

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                103[.]73.161.42

                103[.]78.243.197

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                103[.]94.180.33

                103[.]97.124.50

                104[.]128.93.229

                104[.]149.168.199

                104[.]154.248.179

                104[.]160.41.224

                104[.]168.159.36

                104[.]168.172.252

                104[.]168.174.197

                104[.]168.175.192

                104[.]168.176.29

                104[.]168.214.104

                104[.]192.169.78

                104[.]194.10.206

                104[.]198.151.234

                104[.]225.239.196

                104[.]237.4.40

                104[.]238.134.63

                104[.]244.156.156

                104[.]251.217.97

                106[.]12.90.123

                106[.]13.174.69

                106[.]13.182.116

                106[.]13.33.86

                106[.]13.42.155

                106[.]13.48.213

                106[.]13.8.47

                106[.]13.85.189

                106[.]14.0.74

                106[.]14.189.174

                106[.]14.82.209

                106[.]15.202.7

                106[.]15.249.108

                106[.]2.13.25

                106[.]52.214.81

                106[.]52.235.216

                106[.]52.55.45

                106[.]53.116.113

                106[.]53.226.165

                106[.]53.231.16

                106[.]53.241.3

                106[.]53.243.154

                106[.]53.59.24

                106[.]53.74.243

                106[.]53.97.24

                106[.]54.177.4

                106[.]54.211.200

                106[.]54.241.235

                106[.]54.84.65

                106[.]54.96.164

                106[.]55.153.204

                107[.]148.241.235

                107[.]148.247.198

                107[.]161.188.203

                107[.]182.24.70

                108[.]177.235.22

                108[.]61.162.223

                108[.]61.200.55

                108[.]61.201.65

                109[.]235.70.99

                111[.]229.107.34

                111[.]229.35.56

                111[.]229.51.128

                111[.]229.58.217

                111[.]230.197.23

                111[.]231.228.112

                111[.]231.240.158

                111[.]231.79.105

                111[.]90.149.188

                112[.]124.20.162

                112[.]126.89.177

                112[.]74.33.227

                113[.]31.118.7

                114[.]116.225.193

                114[.]116.41.86

                114[.]118.4.213

                114[.]215.86.71

                114[.]55.106.242

                114[.]55.25.227

                114[.]55.33.36

                116[.]204.170.146

                116[.]62.100.78

                116[.]62.104.16

                116[.]62.174.32

                116[.]62.200.143

                116[.]85.69.130

                117[.]50.80.107

                117[.]51.136.34

                117[.]51.142.47

                117[.]51.150.222

                118[.]126.100.187

                118[.]178.94.47

                118[.]184.23.74

                118[.]24.108.239

                118[.]24.136.75

                118[.]24.170.186

                118[.]24.28.219

                118[.]24.85.85

                118[.]24.9.34

                118[.]25.138.119

                118[.]25.157.90

                118[.]25.71.232

                118[.]89.95.126

                119[.]23.237.214

                119[.]23.241.16

                119[.]23.42.235

                119[.]23.79.133

                119[.]28.194.152

                119[.]29.116.14

                119[.]29.119.60

                119[.]29.132.198

                119[.]29.188.218

                119[.]3.124.44

                119[.]3.140.246

                119[.]3.187.188

                119[.]3.86.69

                119[.]45.136.244

                119[.]45.191.253

                119[.]45.5.195

                119[.]45.56.199

                120[.]131.3.43

                120[.]132.81.138

                120[.]132.81.145

                120[.]24.64.98

                120[.]25.167.81

                120[.]26.160.136

                120[.]26.162.133

                120[.]26.177.10

                120[.]27.17.232

                120[.]27.245.125

                120[.]27.3.39

                120[.]55.194.145

                120[.]76.119.147

                120[.]77.180.97

                120[.]78.176.65

                120[.]78.196.37

                120[.]79.142.88

                120[.]79.210.67

                120[.]79.237.135

                120[.]79.24.186

                120[.]79.28.147

                120[.]79.38.19

                120[.]92.173.127

                121[.]127.234.11

                121[.]196.177.46

                121[.]196.193.160

                121[.]196.27.187

                121[.]199.16.25

                121[.]36.107.213

                121[.]36.12.130

                121[.]36.140.230

                121[.]36.146.237

                121[.]36.149.225

                121[.]36.155.174

                121[.]36.162.110

                121[.]36.175.175

                121[.]36.196.31

                121[.]36.211.148

                121[.]36.215.68

                121[.]36.252.20

                121[.]36.32.125

                121[.]36.37.7

                121[.]37.23.161

                121[.]40.103.231

                121[.]40.124.244

                121[.]41.229.1

                121[.]41.82.60

                121[.]46.4.136

                122[.]114.195.209

                122[.]51.131.86

                122[.]51.137.157

                122[.]51.16.84

                122[.]51.250.26

                122[.]51.253.174

                122[.]51.33.2

                123[.]206.21.178

                123[.]206.210.153

                123[.]206.221.27

                123[.]206.232.40

                123[.]206.47.78

                123[.]207.14.227

                123[.]56.116.146

                123[.]56.228.208

                123[.]56.27.243

                123[.]56.9.63

                123[.]57.143.225

                123[.]57.17.24

                123[.]57.209.41

                123[.]57.241.243

                124[.]156.120.11

                124[.]156.196.145

                124[.]217.230.137

                124[.]243.240.42

                124[.]70.135.155

                124[.]70.151.66

                124[.]70.200.2

                129[.]204.169.102

                129[.]204.207.114

                129[.]204.228.7

                129[.]204.248.145

                129[.]204.89.21

                129[.]28.196.47

                129[.]28.203.182

                132[.]232.3.136

                132[.]232.33.160

                132[.]232.75.164

                134[.]175.132.40

                134[.]175.15.58

                134[.]175.183.74

                134[.]209.130.219

                135[.]181.1.70

                135[.]181.49.38

                135[.]181.49.39

                136[.]243.44.50

                138[.]128.208.123

                138[.]91.90.6

                138[.]99.216.18

                139[.]129.231.62

                139[.]155.18.71

                139[.]155.23.11

                139[.]155.34.217

                139[.]155.69.206

                139[.]180.186.130

                139[.]180.199.171

                139[.]186.10.157

                139[.]186.30.246

                139[.]196.21.224

                139[.]196.37.219

                139[.]196.91.13

                139[.]198.15.159

                139[.]199.100.94

                139[.]199.31.223

                139[.]217.99.29

                139[.]224.31.47

                139[.]9.115.85

                139[.]9.121.229

                139[.]9.128.123

                140[.]143.125.186

                140[.]82.16.24

                140[.]82.19.10

                140[.]82.19.26

                141[.]164.41.118

                141[.]164.48.79

                141[.]164.57.174

                141[.]164.61.249

                141[.]164.63.233

                142[.]202.205.57

                142[.]202.205.88

                143[.]92.49.158

                143[.]92.49.159

                143[.]92.49.160

                144[.]168.63.17

                144[.]202.13.108

                144[.]202.56.193

                144[.]217.207.19

                144[.]217.207.21

                144[.]217.207.31

                144[.]34.144.21

                144[.]34.175.58

                144[.]34.194.159

                144[.]34.198.241

                144[.]48.10.16

                145[.]249.106.56

                145[.]249.107.135

                149[.]129.48.48

                149[.]129.68.79

                149[.]129.72.37

                149[.]129.92.203

                149[.]248.37.167

                149[.]28.117.151

                149[.]28.147.25

                149[.]28.148.224

                149[.]28.28.87

                149[.]28.88.208

                149[.]6.167.60

                150[.]109.103.16

                150[.]109.111.208

                150[.]109.125.111

                152[.]136.114.253

                154[.]209.69.6

                154[.]210.12.80

                154[.]220.3.125

                154[.]220.3.196

                154[.]220.3.226

                154[.]223.142.56

                154[.]223.149.97

                154[.]223.160.112

                154[.]8.160.196

                154[.]92.14.41

                155[.]138.138.215

                155[.]138.164.216

                155[.]94.143.110

                155[.]94.174.114

                156[.]232.254.19

                156[.]232.254.6

                156[.]234.168.104

                156[.]236.118.226

                156[.]239.157.66

                156[.]245.17.6

                156[.]253.11.144

                156[.]255.2.36

                156[.]96.59.27

                157[.]245.169.236

                157[.]52.168.140

                158[.]101.144.105

                161[.]129.39.103

                161[.]129.65.118

                161[.]35.114.210

                161[.]35.38.97

                162[.]254.204.222

                163[.]172.39.102

                167[.]172.45.244

                167[.]179.72.102

                167[.]179.75.10

                167[.]179.78.159

                167[.]179.89.117

                167[.]71.60.61

                170[.]130.55.21

                170[.]130.55.22

                172[.]105.57.166

                172[.]241.27.141

                172[.]241.27.174

                172[.]241.27.192

                172[.]241.27.204

                172[.]241.27.34

                172[.]241.27.44

                172[.]241.27.66

                172[.]241.29.153

                172[.]241.29.155

                172[.]241.29.156

                172[.]247.123.118

                172[.]81.239.64

                172[.]81.254.151

                172[.]86.75.123

                173[.]208.133.38

                173[.]232.146.232

                173[.]232.146.32

                173[.]232.146.37

                173[.]82.236.130

                173[.]82.26.59

                175[.]24.133.73

                175[.]24.46.93

                175[.]24.48.117

                175[.]24.62.158

                175[.]24.75.220

                175[.]99.82.225

                176[.]119.29.43

                176[.]119.29.71

                176[.]121.14.183

                176[.]121.14.199

                176[.]121.14.208

                176[.]121.14.237

                176[.]223.165.110

                176[.]31.193.24

                176[.]9.193.5

                178[.]17.171.58

                179[.]43.176.202

                180[.]215.228.28

                180[.]215.228.34

                180[.]215.228.36

                180[.]215.228.38

                180[.]76.60.140

                180[.]97.215.181

                182[.]16.4.114

                182[.]16.4.115

                182[.]16.4.116

                182[.]16.4.117

                182[.]16.4.118

                182[.]254.173.239

                182[.]254.202.89

                182[.]92.115.109

                182[.]92.120.156

                182[.]92.233.56

                182[.]92.4.23

                182[.]92.65.134

                182[.]92.66.81

                182[.]92.86.170

                185[.]118.164.229

                185[.]14.30.139

                185[.]147.14.248

                185[.]153.196.207

                185[.]153.196.209

                185[.]153.196.212

                185[.]153.196.215

                185[.]153.196.216

                185[.]153.198.27

                185[.]153.198.31

                185[.]153.198.40

                185[.]153.198.45

                185[.]153.198.54

                185[.]158.114.53

                185[.]161.208.201

                185[.]162.235.111

                185[.]162.235.178

                185[.]162.235.233

                185[.]162.235.35

                185[.]162.235.76

                185[.]162.235.91

                185[.]174.103.157

                185[.]177.59.70

                185[.]180.198.61

                185[.]202.0.111

                185[.]202.2.182

                185[.]207.152.86

                185[.]207.154.21

                185[.]213.26.197

                185[.]227.82.66

                185[.]23.200.165

                185[.]232.52.137

                185[.]234.52.45

                185[.]243.113.141

                185[.]243.113.192

                185[.]243.242.116

                185[.]243.41.224

                185[.]33.84.190

                185[.]33.86.54

                185[.]45.193.7

                185[.]70.184.44

                185[.]80.220.171

                188[.]116.36.76

                188[.]65.74.60

                192[.]169.6.180

                192[.]169.6.42

                192[.]169.7.160

                192[.]169.7.223

                192[.]184.90.209

                192[.]236.155.238

                192[.]236.161.221

                192[.]236.161.222

                192[.]236.232.228

                192[.]34.109.12

                192[.]52.167.102

                192[.]69.91.119

                193[.]112.10.125

                193[.]112.124.26

                193[.]168.147.249

                193[.]187.119.133

                193[.]27.14.215

                193[.]29.13.168

                193[.]32.161.135

                193[.]32.163.21

                194[.]36.188.188

                194[.]36.191.118

                195[.]123.213.235

                195[.]123.214.182

                195[.]123.217.36

                195[.]54.160.115

                195[.]54.167.235

                195[.]54.167.237

                195[.]88.209.87

                198[.]13.55.13

                198[.]44.250.175

                198[.]46.198.130

                199[.]189.108.68

                199[.]192.17.125

                199[.]192.17.18

                199[.]233.237.115

                202[.]182.105.129

                202[.]182.119.224

                202[.]61.87.136

                203[.]195.158.21

                203[.]195.199.146

                204[.]16.247.89

                204[.]44.83.217

                207[.]148.124.20

                207[.]148.127.216

                207[.]148.65.247

                207[.]219.199.120

                207[.]46.130.130

                208[.]51.62.26

                208[.]51.62.27

                208[.]51.62.28

                208[.]51.62.29

                208[.]51.62.30

                209[.]126.119.186

                210[.]16.120.248

                211[.]159.201.49

                211[.]49.225.208

                212[.]129.150.253

                212[.]64.44.176

                213[.]217.0.216

                216[.]126.231.24

                216[.]24.188.130

                216[.]240.134.70

                216[.]250.111.90

                217[.]12.202.89

                217[.]12.208.162

                217[.]12.208.227

                217[.]12.208.251

                217[.]12.218.99

                218[.]253.251.100

                218[.]253.251.74

                219[.]146.156.17

                221[.]181.173.48

                221[.]237.189.200

                222[.]186.39.123

                223[.]68.10.24

                参考:

                https://www.cnblogs.com/websecyw/p/12058948.html

                https://bbs.pediy.com/thread-249837.htm

                https://research.nccgroup.com/2020/06/15/striking-back-at-retired-cobalt-strike-a-look-at-a-legacy-vulnerability/

                https://www.nccgroup.com/us/about-us/newsroom-and-events/blog/2019/february/identifying-cobalt-strike-team-servers-in-the-wild/

                https://www.cobaltstrike.com/help-malleable-c2

                https://github.com/salesforce/ja3

                https://xz.aliyun.com/t/3889

                https://engineering.salesforce.com/tls-fingerprinting-with-ja3-and-ja3s-247362855967

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