Cobalt Strike Beacon Detected – 104[.]143[.]47[.]137:2087

Cobalt Strike Beacon Detection Alerts

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 2024-09-24T10:28:39.146907

Cobalt Strike
Cobalt Strike

General Information

277302754
Cloud Provider
Cloud Region
Service
DomainsN/A
HostnamesN/A
HTTP Host104[.]143[.]47[.]137
ISPHong Kong Communications International Co., Limited
ORGHong Kong Communications International Co., 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)0c0219b9091bc49c83b2545a0ffbf7f3b47b4286
SSL ISSUED20240801021938Z
SSL EXPIRES20250801021938Z
SSL CYPHERTLS_AES_256_GCM_SHA384
SSL VERSIONTLSv1.3
SSL TRUST (REVOKED)N/A
TAGSself-signed


Cobalt Strike Beacon Information

Beacon TypeN/A
http-get.clientHost: cc[.]youku[.]zip, Accept: */*, Accept-Language: en-US, Connection: close, _
http-post.clientHost: cc[.]youku[.]zip, Accept: */*, Accept-Language: en, Connection: close, includeMeetingsICoorganize, includeCoorganizers
DNS Beacon MaxDNSN/A
DNS Beacon IdleN/A
Beacon JitterN/A
dns-beacon.strategy_fail_secondsN/A
dns-beacon.strategy_rotate_secondsN/A
dns-beacon.strategy_fail_xN/A
HTTP GET URIcc[.]youku[.]zip,/functionalStatus/
HTTP POST URIN/A
Max GET SizeN/A
PortN/A
post-ex.spawnto_x64%windir%\sysnative\WerFault[.]exe
post-ex.spawnto_x86%windir%\syswow64\WerFault[.]exe
process-inject.startrwxN/A
process-inject.userwxN/A
process-inject.allocatorN/A
proxy.behaviorN/A
sleeptimeN/A
useragent_headerN/A
uses_cookiesN/A
process-inject.executentdll.dll:RtlUserThreadStart, NtQueueApcThread-s, SetThreadContext, CreateRemoteThread, kernel32.dll:LoadLibraryA, RtlCreateUserThread
WatermarkN/A
Beacon Stage CleanupN/A

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