Cobalt Stike Beacon Detected – 218[.]253[.]251[.]68:443

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 2021-11-14T08:55:47.600482

General Information

2188122961274029600

Cloud Provider
Cloud Region
Service
Domains	wtt[.]net[.]hk
Hostnames	68[.]251-253-218-static[.]reserve[.]wtt[.]net[.]hk
HTTP Host	218[.]253[.]251[.]68
ISP	HKBN Enterprise Solutions HK Limited
ORG	HKBN Enterprise Solutions HK Limited
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	N/A
HTTP SITEMAP	N/A
HTTP SITEMAP HASH	N/A
HTTP TITLE	N/A
LOCATION (AREA CODE)	N/A
LOCATION (CITY)	Hong Kong
LOCATION (COUNTRY CODE)	HK
LOCATION (COUNTRY NAME)	Hong Kong
LOCATION (LATITUDE)	22.27832
LOCATION (LONGITUDE)	114.17469
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	N/A
SSL FINGERPRINT (SHA1)	1c2da18c7d60006a868794f7d66485d483d774aa
SSL ISSUED	20210526115518Z
SSL EXPIRES	20220526115518Z
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: */*, Host: download[.]windowsupdate[.]com, [.]cab
http-post.client	Accept: */*, download[.]windowsupdate[.]com/c/, Host, [.]cab
DNS Beacon MaxDNS	235
DNS Beacon Idle	134743044
Beacon Jitter	20
dns-beacon.strategy_fail_seconds	N/A
dns-beacon.strategy_rotate_seconds	N/A
dns-beacon.strategy_fail_x	N/A
HTTP GET URI	218[.]253[.]251[.]68,/c/msdownload/update/others/2016/12/29136388_
HTTP POST URI	/c/msdownload/update/others/2016/12/3215234_
Max GET Size	1048576
Port	443
post-ex.spawnto_x64	%windir%\sysnative\rundll32[.]exe
post-ex.spawnto_x86	%windir%\syswow64\rundll32[.]exe
process-inject.startrwx	64
process-inject.userwx	64
process-inject.allocator	N/A
proxy.behavior	2 (Use IE settings)
sleeptime	60000
useragent_header	Windows-Update-Agent/10.0.10011.16384 Client-Protocol/1.40
uses_cookies	N/A
process-inject.execute	CreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark	N/A
Beacon Stage Cleanup	N/A