Cobalt Stike Beacon Detected – 111[.]229[.]30[.]135:443

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The Information provided at the time of posting was detected as “Cobalt Strike”. Depending on when you are viewing this article, it may no longer be the case and could be determined as being a false positive. Please do your own additional validation. – RedPacket Security

TimeStamp 2021-11-10T13:58:44.122620

Cobalt Strike
Cobalt Strike

General Information

1948544155
Cloud ProviderTencent Cloud
Cloud RegionN/A
ServiceN/A
DomainsN/A
HostnamesN/A
HTTP Host111[.]229[.]30[.]135
ISPShenzhen Tencent Computer Systems Company Limited
ORGTencent cloud computing (Beijing) Co., Ltd.
OSN/A
HTTPN/A
HTTP HTML HASHN/A
HTTP LOCATION/
HTTP REDIRECTS
HTTP ROBOTSN/A
HTTP ROBOTS HASHN/A
HTTP SECURITY.TXTN/A
HTTP SECURITY.TXT HASHN/A
HTTP SERVERApache
HTTP SITEMAPN/A
HTTP SITEMAP HASHN/A
HTTP TITLEN/A
LOCATION (AREA CODE)N/A
LOCATION (CITY)Guangzhou
LOCATION (COUNTRY CODE)CN
LOCATION (COUNTRY NAME)China
LOCATION (LATITUDE)23.11667
LOCATION (LONGITUDE)113.25
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDtrue
SSL FINGERPRINT (SHA1)97884c0c93c9b2bc00b17bc9b1fccbe69d140cb2
SSL ISSUED20210115105300Z
SSL EXPIRES20210415105300Z
SSL CYPHERECDHE-RSA-AES128-GCM-SHA256
SSL VERSIONTLSv1/SSLv3
SSL TRUST (REVOKED)N/A
TAGScloud, self-signed


Cobalt Strike Beacon Information

Beacon TypeHTTPS
http-get.clientAccept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*;q=0[.]8, Host: www[.]ccb[.]com, Referer: http://www[.]ccb[.]com/, Accept-Encoding: gzip, deflate, __cfduid=, Cookie
http-post.clientAccept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*;q=0[.]8, Host: www[.]ccb[.]com, Referer: http://www[.]ccb[.]com/, Accept-Encoding: gzip, deflate, __cfduid
DNS Beacon MaxDNS255
DNS Beacon IdleN/A
Beacon Jitter37
dns-beacon.strategy_fail_secondsN/A
dns-beacon.strategy_rotate_secondsN/A
dns-beacon.strategy_fail_xN/A
HTTP GET URI111[.]229[.]30[.]135,/jquery-3[.]3[.]1[.]min[.]js
HTTP POST URI/jquery-3.3.2.min.js
Max GET Size1403644
Port443
post-ex.spawnto_x64%windir%\sysnative\Werfault[.]exe
post-ex.spawnto_x86%windir%\syswow64\Werfault[.]exe
process-inject.startrwx4
process-inject.userwx32
process-inject.allocator1
proxy.behavior2 (Use IE settings)
sleeptime45000
useragent_headerMozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko
uses_cookies1
process-inject.executentdll:RtlUserThreadStart, CreateThread, NtQueueApcThread-s, CreateRemoteThread, RtlCreateUserThread
WatermarkN/A
Beacon Stage Cleanup1
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