Cobalt Stike Beacon Detected – 54[.]145[.]127[.]222:443

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 2021-11-18T02:34:18.115695

Cobalt Strike
Cobalt Strike

General Information

3.611365778001366e+41
Cloud ProviderAmazon
Cloud Regionus-east-1
ServiceAMAZON
Domainsamazonaws[.]com
Hostnamesec2-54-145-127-222[.]compute-1[.]amazonaws[.]com
HTTP Host54[.]145[.]127[.]222
ISPAmazon.com, Inc.
ORGAmazon Data Services NoVa
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)Ashburn
LOCATION (COUNTRY CODE)US
LOCATION (COUNTRY NAME)United States
LOCATION (LATITUDE)39.04372
LOCATION (LONGITUDE)-77.48749
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDtrue
SSL FINGERPRINT (SHA1)89ee96f5a03e066f910d44f2ca6f8ec5d8db97a8
SSL ISSUED20210517160130Z
SSL EXPIRES20210815160130Z
SSL CYPHERECDHE-RSA-AES256-GCM-SHA384
SSL VERSIONTLSv1/SSLv3
SSL TRUST (REVOKED)N/A
TAGScloud


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 URIwww[.]ownerbuilderfinance[.]com,/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
Watermark368925349
Beacon Stage CleanupN/A