Cobalt Stike Beacon Detected – 45[.]77[.]9[.]110:8443

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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 2021-11-15T00:28:46.462430

Cobalt Strike
Cobalt Strike

General Information

4.865602897435148e+47
Cloud ProviderVultr
Cloud RegionN/A
ServiceN/A
Domainsvultr[.]com
Hostnames45[.]77[.]9[.]110[.]vultr[.]com
HTTP Host45[.]77[.]9[.]110
ISPThe Constant Company, LLC
ORGVultr Holdings, 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)Tokyo
LOCATION (COUNTRY CODE)JP
LOCATION (COUNTRY NAME)Japan
LOCATION (LATITUDE)35.6895
LOCATION (LONGITUDE)139.69171
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDN/A
SSL FINGERPRINT (SHA1)086810ac51e8c4201813054100d03a37ee8db637
SSL ISSUED20210706074400Z
SSL EXPIRES20360702074400Z
SSL CYPHERECDHE-RSA-AES256-GCM-SHA384
SSL VERSIONTLSv1/SSLv3
SSL TRUST (REVOKED)N/A
TAGScloud


Cobalt Strike Beacon Information

Beacon TypeHTTPS
http-get.clientHost: helensilva[.]com, Cookie
http-post.clientHost: helensilva[.]com
DNS Beacon MaxDNSN/A
DNS Beacon IdleN/A
Beacon JitterN/A
dns-beacon.strategy_fail_seconds-1
dns-beacon.strategy_rotate_seconds-1
dns-beacon.strategy_fail_x-1
HTTP GET URIwww[.]helensilva[.]com,/api/3
HTTP POST URI/api/4
Max GET Size1048576
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)
sleeptime60000
useragent_headerMozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; MALCJS)
uses_cookies1
process-inject.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark426352781
Beacon Stage CleanupN/A
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