Cobalt Stike Beacon Detected – 78[.]142[.]29[.]122:443

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 2021-11-17T10:12:58.950347

General Information

1162324753

Cloud Provider
Cloud Region
Service
Domains	pentordnessl[.]best
Hostnames	pentordnessl[.]best
HTTP Host	78[.]142[.]29[.]122
ISP	Verdina Ltd.
ORG	RackSrvr
OS	N/A
HTTP	N/A
HTTP HTML HASH	N/A
HTTP LOCATION	/
HTTP REDIRECTS
HTTP ROBOTS	N/A
HTTP ROBOTS HASH	N/A
HTTP SECURITY.TXT	N/A
HTTP SECURITY.TXT HASH	N/A
HTTP SERVER	Apache
HTTP SITEMAP	N/A
HTTP SITEMAP HASH	N/A
HTTP TITLE	N/A
LOCATION (AREA CODE)	N/A
LOCATION (CITY)	Sofia
LOCATION (COUNTRY CODE)	BG
LOCATION (COUNTRY NAME)	Bulgaria
LOCATION (LATITUDE)	42.69751
LOCATION (LONGITUDE)	23.32415
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	N/A
SSL FINGERPRINT (SHA1)	d3126a82c48c03d32c66c0917ca3ffea3e48fbb6
SSL ISSUED	20211021090942Z
SSL EXPIRES	20221021090942Z
SSL CYPHER	ECDHE-RSA-AES256-GCM-SHA384
SSL VERSION	TLSv1/SSLv3
SSL TRUST (REVOKED)	N/A
TAGS	self-signed

Cobalt Strike Beacon Information

Beacon Type	HTTPS
http-get.client	Accept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*;q=0[.]8, Host: code[.]jquery[.]com, Referer: http://code[.]jquery[.]com/, Accept-Encoding: gzip, deflate, __cfduid=, Cookie
http-post.client	Accept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*;q=0[.]8, Host: code[.]jquery[.]com, Referer: http://code[.]jquery[.]com/, Accept-Encoding: gzip, deflate, __cfduid
DNS Beacon MaxDNS	N/A
DNS Beacon Idle	N/A
Beacon Jitter	37
dns-beacon.strategy_fail_seconds	-1
dns-beacon.strategy_rotate_seconds	-1
dns-beacon.strategy_fail_x	-1
HTTP GET URI	78[.]142[.]29[.]122,/jquery-3[.]3[.]1[.]min[.]js
HTTP POST URI	/jquery-3.3.2.min.js
Max GET Size	1403644
Port	443
post-ex.spawnto_x64	%windir%\sysnative\gpupdate[.]exe
post-ex.spawnto_x86	%windir%\syswow64\gpupdate[.]exe
process-inject.startrwx	4
process-inject.userwx	32
process-inject.allocator	1
proxy.behavior	2 (Use IE settings)
sleeptime	45000
useragent_header	Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko
uses_cookies	1
process-inject.execute	ntdll:RtlUserThreadStart, CreateThread, NtQueueApcThread-s, CreateRemoteThread, RtlCreateUserThread
Watermark	N/A
Beacon Stage Cleanup	1