Cobalt Strike Beacon Detected – 123[.]57[.]56[.]129:443

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 2024-09-01T07:01:34.958713

Cobalt Strike
Cobalt Strike

General Information

144669335
Cloud Provider
Cloud Region
Service
DomainsN/A
HostnamesN/A
HTTP Host123[.]57[.]56[.]129
ISPHangzhou Alibaba Advertising Co.,Ltd.
ORGAliyun Computing 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 SERVERN/A
HTTP SITEMAPN/A
HTTP SITEMAP HASHN/A
HTTP TITLEN/A
LOCATION (AREA CODE)N/A
LOCATION (CITY)Beijing
LOCATION (COUNTRY CODE)CN
LOCATION (COUNTRY NAME)China
LOCATION (LATITUDE)39.9075
LOCATION (LONGITUDE)116.39723
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDtrue
SSL FINGERPRINT (SHA1)9efaf1be123f494b92b79d88b4711901d165e539
SSL ISSUED20240322014011Z
SSL EXPIRES20240620014011Z
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: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*l;q=0[.]8, Referer: http://www[.]google[.]com, Host: apex1[.]tk, Pragma: no-cache, Cache-Control: no-cache, [.]jpg
http-post.clientContent-Type: application/octet-stream, Referer: http://www[.]google[.]com, Host: apex1[.]tk, Pragma: no-cache, Cache-Control: no-cache, [.]png
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 URI123[.]57[.]56[.]129,/image/
HTTP POST URIN/A
Max GET SizeN/A
PortN/A
post-ex.spawnto_x64%windir%\sysnative\rundll32[.]exe
post-ex.spawnto_x86%windir%\syswow64\rundll32[.]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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