Cobalt Stike Beacon Detected – 155[.]94[.]201[.]136:8443

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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 2021-11-15T13:54:45.409704

Cobalt Strike
Cobalt Strike

General Information

1149981027
Cloud Provider
Cloud Region
Service
Domainsquadranet[.]com
Hostnamesunassigned[.]quadranet[.]com
HTTP Host155[.]94[.]201[.]136
ISPQuadraNet Enterprises LLC
ORGQuadraNet Enterprises LLC
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)Los Angeles
LOCATION (COUNTRY CODE)US
LOCATION (COUNTRY NAME)United States
LOCATION (LATITUDE)34.0443
LOCATION (LONGITUDE)-118.2509
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDN/A
SSL FINGERPRINT (SHA1)cd2ade6c57839827b800eea6089e4c44945f1361
SSL ISSUED20210823025637Z
SSL EXPIRES20211121025637Z
SSL CYPHERECDHE-RSA-AES256-GCM-SHA384
SSL VERSIONTLSv1/SSLv3
SSL TRUST (REVOKED)N/A
TAGSself-signed


Cobalt Strike Beacon Information

Beacon TypeHTTPS
http-get.clientAccept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*l;q=0[.]8, Referer: https://www[.]baidu[.]com, Pragma: no-cache, Cache-Control: no-cache, -[.]jpg
http-post.clientContent-Type: application/octet-stream, Referer: https://www[.]baidu[.]com, Pragma: no-cache, Cache-Control: no-cache, [.]asp
DNS Beacon MaxDNS255
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 URIwww[.]aliiicloud[.]tk,/image/
HTTP POST URI/history/
Max GET Size1398104
Port8443
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)
sleeptime5000
useragent_headerMozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/5.0)
uses_cookiesN/A
process-inject.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark1873433027
Beacon Stage CleanupN/A
Available for Amazon Prime