Cobalt Stike Beacon Detected – 18[.]203[.]231[.]121:443

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 2022-08-03T21:36:43.167283

Cobalt Strike
Cobalt Strike

General Information

4.198603700557892e+41
Cloud ProviderAmazon
Cloud Regioneu-west-1
ServiceAMAZON
Domainsrhombersersa[.]com, amazonaws[.]com
Hostnamesdev[.]rhombersersa[.]com, ec2-18-203-231-121[.]eu-west-1[.]compute[.]amazonaws[.]com
HTTP Host18[.]203[.]231[.]121
ISPAmazon.com, Inc.
ORGAmazon Data Services Ireland 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)Dublin
LOCATION (COUNTRY CODE)IE
LOCATION (COUNTRY NAME)Ireland
LOCATION (LATITUDE)53.33306
LOCATION (LONGITUDE)-6.24889
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDN/A
SSL FINGERPRINT (SHA1)74799c6d16df18e30f48bc3b7e005056a6092648
SSL ISSUED20220720092020Z
SSL EXPIRES20221018092019Z
SSL CYPHERTLS_AES_256_GCM_SHA384
SSL VERSIONTLSv1.3
SSL TRUST (REVOKED)N/A
TAGScloud


Cobalt Strike Beacon Information

Beacon TypeN/A
http-get.client
http-post.client
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 URI
HTTP POST URIN/A
Max GET SizeN/A
PortN/A
post-ex.spawnto_x64
post-ex.spawnto_x86
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.execute
WatermarkN/A
Beacon Stage CleanupN/A


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