Cobalt Stike Beacon Detected – 137[.]184[.]230[.]248:443

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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 2021-11-14T18:32:23.962799

Cobalt Strike
Cobalt Strike

General Information

2110441535
Cloud ProviderDigitalOcean
Cloud Regionus-ca
ServiceN/A
Domainsncvtigkrsjemvbtreiladjfmvntkbeirflwrenlbtj[.]com
Hostnamesncvtigkrsjemvbtreiladjfmvntkbeirflwrenlbtj[.]com
HTTP Host137[.]184[.]230[.]248
ISPDigitalOcean, LLC
ORGDigitalOcean, 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)Santa Clara
LOCATION (COUNTRY CODE)US
LOCATION (COUNTRY NAME)United States
LOCATION (LATITUDE)37.3924
LOCATION (LONGITUDE)-121.9623
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDN/A
SSL FINGERPRINT (SHA1)0202ffd4eded57a8f69ccbbc7485e5e212cc140c
SSL ISSUED20211112102202Z
SSL EXPIRES20221112102202Z
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: */*, Cache-Control: no-cache, [.]cab
http-post.clientCache-Control: no-cache, Accept: */*, sn, [.]cab
DNS Beacon MaxDNSN/A
DNS Beacon IdleN/A
Beacon Jitter20
dns-beacon.strategy_fail_secondsN/A
dns-beacon.strategy_rotate_secondsN/A
dns-beacon.strategy_fail_xN/A
HTTP GET URIjquerycdnserver[.]com,/src/download/msupdate/others/2021/06/504751_,mysqllight[.]com,/src/download/msupdate/others/2021/06/504751_
HTTP POST URI/src/download/msupdate/others/2021/07/3541412_
Max GET Size1048592
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/2.0
uses_cookiesN/A
process-inject.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark1359593325
Beacon Stage CleanupN/A
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