Cobalt Stike Beacon Detected – 198[.]13[.]54[.]45:8443

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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 2021-11-09T11:20:51.686719

Cobalt Strike
Cobalt Strike

General Information

15279836793848162000
Cloud ProviderVultr
Cloud RegionN/A
ServiceN/A
Domainsvultr[.]com
Hostnames198[.]13[.]54[.]45[.]vultr[.]com
HTTP Host198[.]13[.]54[.]45
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)597f454472a22e361dd84977ba0877fec278c677
SSL ISSUED20211105221509Z
SSL EXPIRES20221105221509Z
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.clientmanifest=wac, Host: onedrive[.]live[.]com, Accept: text/html,application/xml;*/*;, Accept-Encoding: gzip, deflate, E=P:, =:PFzM9cj, Cookie
http-post.clientHost: onedrive[.]live[.]com, Accept: text/html,application/xml;*/*;, Accept-Encoding: gzip, deflate, E=P:, =:PFzM9cj, Cookie, https://p[.]sfx[.]ms/sa[.]html?s=, Referer
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 URI198[.]13[.]54[.]45,/preload
HTTP POST URI/sa
Max GET Size2099361
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 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko
uses_cookies1
process-inject.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark1580103824
Beacon Stage CleanupN/A
Available for Amazon Prime