Cobalt Stike Beacon Detected – 18[.]134[.]142[.]185:443

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 2021-11-16T17:17:00.219907

General Information

511767138

Cloud Provider	Amazon
Cloud Region	eu-west-2
Service	AMAZON
Domains	amazonaws[.]com
Hostnames	ec2-18-134-142-185[.]eu-west-2[.]compute[.]amazonaws[.]com
HTTP Host	18[.]134[.]142[.]185
ISP	Amazon.com, Inc.
ORG	Amazon Data Services UK
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)	London
LOCATION (COUNTRY CODE)	GB
LOCATION (COUNTRY NAME)	United Kingdom
LOCATION (LATITUDE)	51.50853
LOCATION (LONGITUDE)	-0.12574
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	N/A
SSL FINGERPRINT (SHA1)	b283db9c3e0595e3f7012a2e92579e67e817dd6b
SSL ISSUED	20211103081702Z
SSL EXPIRES	20221103081702Z
SSL CYPHER	ECDHE-RSA-AES256-GCM-SHA384
SSL VERSION	TLSv1/SSLv3
SSL TRUST (REVOKED)	N/A
TAGS	cloud, 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, 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, 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	5
HTTP GET URI	sky-cache[.]global[.]ssl[.]fastly[.]net,/jquery-3[.]3[.]1[.]min[.]js,sky-cdn[.]global[.]ssl[.]fastly[.]net,/jquery-3[.]3[.]1[.]min[.]js,sky-logupdate[.]global[.]ssl[.]fastly[.]net,/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\dllhost[.]exe
post-ex.spawnto_x86	%windir%\syswow64\dllhost[.]exe
process-inject.startrwx	4
process-inject.userwx	32
process-inject.allocator	1
proxy.behavior	2 (Use IE settings)
sleeptime	120000
useragent_header	Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
uses_cookies	1
process-inject.execute	ntdll:RtlUserThreadStart, CreateThread, NtQueueApcThread-s, CreateRemoteThread, RtlCreateUserThread
Watermark	1512605851
Beacon Stage Cleanup	1