Cobalt Stike Beacon Detected – 104[.]131[.]88[.]78:443

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 2021-11-13T20:24:54.354172

General Information

3.093822192544455e+41

Cloud Provider	DigitalOcean
Cloud Region	us-nj
Service	N/A
Domains	N/A
Hostnames	N/A
HTTP Host	104[.]131[.]88[.]78
ISP	DigitalOcean, LLC
ORG	DigitalOcean, LLC
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)	Clifton
LOCATION (COUNTRY CODE)	US
LOCATION (COUNTRY NAME)	United States
LOCATION (LATITUDE)	40.8344
LOCATION (LONGITUDE)	-74.1377
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	N/A
SSL FINGERPRINT (SHA1)	f1dd9d42558d2373d614bc2c9dcbbbdcad025f4e
SSL ISSUED	20211109150843Z
SSL EXPIRES	20220207150842Z
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	auth: api-H4ew7u6aHMIK8an, token
http-post.client	action=GetExtensibilityContext, Content-Type: application/json; charset=utf-8, Pragma: no-cache, auth: api-H4ew7u6aHMIK8an, token, {“version”:”2″,”report”:”, “}
DNS Beacon MaxDNS	N/A
DNS Beacon Idle	N/A
Beacon Jitter	N/A
dns-beacon.strategy_fail_seconds	-1
dns-beacon.strategy_rotate_seconds	-1
dns-beacon.strategy_fail_x	-1
HTTP GET URI	apk[.]cdnsrvq[.]workers[.]dev,/poll
HTTP POST URI	/upload
Max GET Size	1398141
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	Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; LBBROWSER)
uses_cookies	N/A
process-inject.execute	CreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark	1763288549
Beacon Stage Cleanup	N/A