Cobalt Stike Beacon Detected – 45[.]91[.]81[.]84:443

Click the icon to Follow me:- twitterTelegramRedditDiscord

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 2021-11-15T17:42:17.465907

Cobalt Strike
Cobalt Strike

General Information

3.3958732508314947e+47
Cloud Provider
Cloud Region
Service
DomainsN/A
HostnamesN/A
HTTP Host45[.]91[.]81[.]84
ISPKURUN CLOUD INC
ORGRHINO CLOUD LTD
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)34.05223
LOCATION (LONGITUDE)-118.24368
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDN/A
SSL FINGERPRINT (SHA1)9452153fbbc9eda4a069a649942bb26698f78f2f
SSL ISSUED20211113132800Z
SSL EXPIRES20361109132800Z
SSL CYPHERECDHE-ECDSA-AES256-GCM-SHA384
SSL VERSIONTLSv1/SSLv3
SSL TRUST (REVOKED)N/A
TAGS


Cobalt Strike Beacon Information

Beacon TypeHTTPS
http-get.clientHost: b1a3kharvester[.]ga, Cookie
http-post.clientHost: b1a3kharvester[.]ga
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 URIb1a3kharvester[.]ga,/api/3
HTTP POST URI/api/4
Max GET Size1048576
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_headerMozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP08; MAAU; NP08)
uses_cookies1
process-inject.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark426352781
Beacon Stage CleanupN/A
Available for Amazon Prime