Cobalt Stike Beacon Detected – 54[.]145[.]127[.]222:443

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 2021-11-18T02:34:18.115695

General Information

3.611365778001366e+41

Cloud Provider	Amazon
Cloud Region	us-east-1
Service	AMAZON
Domains	amazonaws[.]com
Hostnames	ec2-54-145-127-222[.]compute-1[.]amazonaws[.]com
HTTP Host	54[.]145[.]127[.]222
ISP	Amazon.com, Inc.
ORG	Amazon Data Services NoVa
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)	Ashburn
LOCATION (COUNTRY CODE)	US
LOCATION (COUNTRY NAME)	United States
LOCATION (LATITUDE)	39.04372
LOCATION (LONGITUDE)	-77.48749
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	true
SSL FINGERPRINT (SHA1)	89ee96f5a03e066f910d44f2ca6f8ec5d8db97a8
SSL ISSUED	20210517160130Z
SSL EXPIRES	20210815160130Z
SSL CYPHER	ECDHE-RSA-AES256-GCM-SHA384
SSL VERSION	TLSv1/SSLv3
SSL TRUST (REVOKED)	N/A
TAGS	cloud

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	www[.]ownerbuilderfinance[.]com,/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	368925349
Beacon Stage Cleanup	N/A