Cobalt Stike Beacon Detected – 218[.]253[.]251[.]68:443

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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 2021-11-14T08:55:47.600482

Cobalt Strike
Cobalt Strike

General Information

2188122961274029600
Cloud Provider
Cloud Region
Service
Domainswtt[.]net[.]hk
Hostnames68[.]251-253-218-static[.]reserve[.]wtt[.]net[.]hk
HTTP Host218[.]253[.]251[.]68
ISPHKBN Enterprise Solutions HK Limited
ORGHKBN Enterprise Solutions HK Limited
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 SERVERN/A
HTTP SITEMAPN/A
HTTP SITEMAP HASHN/A
HTTP TITLEN/A
LOCATION (AREA CODE)N/A
LOCATION (CITY)Hong Kong
LOCATION (COUNTRY CODE)HK
LOCATION (COUNTRY NAME)Hong Kong
LOCATION (LATITUDE)22.27832
LOCATION (LONGITUDE)114.17469
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDN/A
SSL FINGERPRINT (SHA1)1c2da18c7d60006a868794f7d66485d483d774aa
SSL ISSUED20210526115518Z
SSL EXPIRES20220526115518Z
SSL CYPHERECDHE-RSA-AES256-GCM-SHA384
SSL VERSIONTLSv1/SSLv3
SSL TRUST (REVOKED)N/A
TAGSself-signed


Cobalt Strike Beacon Information

Beacon TypeHTTPS
http-get.clientAccept: */*, Host: download[.]windowsupdate[.]com, [.]cab
http-post.clientAccept: */*, download[.]windowsupdate[.]com/c/, Host, [.]cab
DNS Beacon MaxDNS235
DNS Beacon Idle134743044
Beacon Jitter20
dns-beacon.strategy_fail_secondsN/A
dns-beacon.strategy_rotate_secondsN/A
dns-beacon.strategy_fail_xN/A
HTTP GET URI218[.]253[.]251[.]68,/c/msdownload/update/others/2016/12/29136388_
HTTP POST URI/c/msdownload/update/others/2016/12/3215234_
Max GET Size1048576
Port443
post-ex.spawnto_x64%windir%\sysnative\rundll32[.]exe
post-ex.spawnto_x86%windir%\syswow64\rundll32[.]exe
process-inject.startrwx64
process-inject.userwx64
process-inject.allocatorN/A
proxy.behavior2 (Use IE settings)
sleeptime60000
useragent_headerWindows-Update-Agent/10.0.10011.16384 Client-Protocol/1.40
uses_cookiesN/A
process-inject.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
WatermarkN/A
Beacon Stage CleanupN/A
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