Cobalt Stike Beacon Detected – 54[.]167[.]68[.]102:443

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 2021-11-18T02:09:27.685357

Cobalt Strike
Cobalt Strike

General Information

941232505
Cloud ProviderAmazon
Cloud Regionus-east-1
ServiceAMAZON
Domainsamazonaws[.]com
Hostnamesec2-54-167-68-102[.]compute-1[.]amazonaws[.]com
HTTP Host54[.]167[.]68[.]102
ISPAmazon.com, Inc.
ORGAmazon Technologies Inc.
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 EXPIREDN/A
SSL FINGERPRINT (SHA1)986f4c76afd9375dfcd5c9b1a3ce91d3e2189dd5
SSL ISSUED20211025172924Z
SSL EXPIRES20221025172924Z
SSL CYPHERECDHE-RSA-AES256-GCM-SHA384
SSL VERSIONTLSv1/SSLv3
SSL TRUST (REVOKED)N/A
TAGScloud, self-signed


Cobalt Strike Beacon Information

Beacon TypeHTTPS
http-get.clientAccept: */*, Accept-Language: en-US, Connection: close, ;_ga=GA1[.]1[.]926, ;__ar_v4=%1468UMDGS521, d=, _ga=GA1[.]3[.]877;, b=[.]12VTkw23i;, Cookie
http-post.clientAccept: */*, Accept-Language: en-US, ;_ga=GA1[.]2[.]875, __ar_v4=%8867UMDGS643, d=, _ga=GA1[.]2[.]875;, b=[.]12vPkW22o;, Cookie, GA1[.], _ga
DNS Beacon MaxDNSN/A
DNS Beacon IdleN/A
Beacon Jitter20
dns-beacon.strategy_fail_seconds-1
dns-beacon.strategy_rotate_seconds-1
dns-beacon.strategy_fail_x-1
HTTP GET URIec2-34-201-60-69[.]compute-1[.]amazonaws[.]com,/messages/C16438C0MM,ec2-18-206-160-62[.]compute-1[.]amazonaws[.]com,/messages/C16438C0MM,ec2-54-91-206-76[.]compute-1[.]amazonaws[.]com,/messages/C16438C0MM
HTTP POST URI/api/redirect.do
Max GET Size1399733
Port443
post-ex.spawnto_x64%windir%\sysnative\gpupdate[.]exe
post-ex.spawnto_x86%windir%\syswow64\gpupdate[.]exe
process-inject.startrwx64
process-inject.userwx32
process-inject.allocator1
proxy.behavior2 (Use IE settings)
sleeptime5000
useragent_headerMozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko)
uses_cookies1
process-inject.executentdll:RtlUserThreadStart, CreateThread, NtQueueApcThread, CreateRemoteThread, RtlCreateUserThread
Watermark57752856
Beacon Stage Cleanup1