Cobalt Stike Beacon Detected – 45[.]42[.]44[.]233:443

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 2021-11-11T22:48:41.759133

General Information

4.216326399606136e+41

Cloud Provider
Cloud Region
Service
Domains	N/A
Hostnames	N/A
HTTP Host	45[.]42[.]44[.]233
ISP	NextArray LLC.
ORG	VarianceM
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	nginx
HTTP SITEMAP	N/A
HTTP SITEMAP HASH	N/A
HTTP TITLE	N/A
LOCATION (AREA CODE)	N/A
LOCATION (CITY)	Dallas
LOCATION (COUNTRY CODE)	US
LOCATION (COUNTRY NAME)	United States
LOCATION (LATITUDE)	32.78306
LOCATION (LONGITUDE)	-96.80667
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	N/A
SSL FINGERPRINT (SHA1)	6ee77bb51f5264b64f030e8c88c74da0e6f3c7f2
SSL ISSUED	20211102170726Z
SSL EXPIRES	20220131170725Z
SSL CYPHER	ECDHE-RSA-AES256-GCM-SHA384
SSL VERSION	TLSv1/SSLv3
SSL TRUST (REVOKED)	N/A
TAGS

Cobalt Strike Beacon Information

Beacon Type	HTTPS
http-get.client	Host: av-update[.]info, Connection: close, Accept-Encoding: gzip, br, Accept-Language: fr-CH, fr;q=0[.]9, en;q=0[.]8, de;q=0[.]7, *;q=0[.]5, made_write_conn=, Cookie
http-post.client	Host: av-update[.]info, Connection: close, Accept-Encoding: br, Content-Type: text/plain, __session__id=, Cookie
DNS Beacon MaxDNS	N/A
DNS Beacon Idle	N/A
Beacon Jitter	37
dns-beacon.strategy_fail_seconds	N/A
dns-beacon.strategy_rotate_seconds	N/A
dns-beacon.strategy_fail_x	N/A
HTTP GET URI	45[.]42[.]44[.]233,/skin
HTTP POST URI	/search
Max GET Size	1398446
Port	443
post-ex.spawnto_x64	%windir%\sysnative\WUAUCLT[.]exe
post-ex.spawnto_x86	%windir%\syswow64\WUAUCLT[.]exe
process-inject.startrwx	4
process-inject.userwx	32
process-inject.allocator	N/A
proxy.behavior	2 (Use IE settings)
sleeptime	61349
useragent_header	Mozilla/5.0 (Windows Phone 10.0; Android 6.0.1; Microsoft; RM-1152) AppleWebKit/537.36 (KHTML, like Gecko)
uses_cookies	1
process-inject.execute	CreateThread, RtlCreateUserThread, CreateRemoteThread
Watermark	305419776
Beacon Stage Cleanup	1