Cobalt Strike Beacon Detected – 89[.]245[.]139[.]188:443

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 2024-10-18T07:34:57.633310

Cobalt Strike
Cobalt Strike

General Information

1299548058
Cloud Provider
Cloud Region
Service
DomainsN/A
HostnamesN/A
HTTP Host89[.]245[.]139[.]188
ISP1&1 Versatel Deutschland GmbH
ORG1&1 Versatel Deutschland GmbH
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)Düsseldorf
LOCATION (COUNTRY CODE)DE
LOCATION (COUNTRY NAME)Germany
LOCATION (LATITUDE)51.22172
LOCATION (LONGITUDE)6.77616
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDN/A
SSL FINGERPRINT (SHA1)2d18a92d81f1c0f1cbd4b2af463b5befe6724216
SSL ISSUED20241017092535Z
SSL EXPIRES20251017092535Z
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.clientAccept: */*, Host: download[.]windowsupdate[.]com, [.]cab
http-post.clientAccept: */*, download[.]windowsupdate[.]com/c/, Host, [.]cab
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 URI20[.]126[.]128[.]120,/c/msdownload/update/others/2016/12/29136388_
HTTP POST URIN/A
Max GET SizeN/A
PortN/A
post-ex.spawnto_x64%windir%\sysnative\notepad[.]exe
post-ex.spawnto_x86%windir%\syswow64\notepad[.]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.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
WatermarkN/A
Beacon Stage CleanupN/A

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