Cobalt Stike Beacon Detected – 39[.]101[.]69[.]27:443

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 2021-11-13T21:27:42.567486

General Information

682199109

Cloud Provider
Cloud Region
Service
Domains	N/A
Hostnames	N/A
HTTP Host	39[.]101[.]69[.]27
ISP	Hangzhou Alibaba Advertising Co.,Ltd.
ORG	Aliyun Computing Co., LTD
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)	Beijing
LOCATION (COUNTRY CODE)	CN
LOCATION (COUNTRY NAME)	China
LOCATION (LATITUDE)	39.9075
LOCATION (LONGITUDE)	116.39723
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	true
SSL FINGERPRINT (SHA1)	2f7c33f9d8b57b4288924097ae8b93f69779a607
SSL ISSUED	20210401112722Z
SSL EXPIRES	20210630112722Z
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: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*;q=0[.]8, Host: inc[.]huorong[.]cn, Referer: http://www[.]jquery[.]com/, Accept-Encoding: gzip, deflate, __cfdcookieuid=, Cookie
http-post.client	Accept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*;q=0[.]8, Host: inc[.]huorong[.]cn, Referer: http://www[.]jquery[.]com/, Accept-Encoding: gzip, deflate, __cfdcodeuid
DNS Beacon MaxDNS	255
DNS Beacon Idle	1249756273
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	42[.]202[.]154[.]30,/jquery-3[.]3[.]1[.]1[.]min[.]js,117[.]68[.]66[.]27,/jquery-3[.]3[.]1[.]1[.]min[.]js,110[.]185[.]114[.]151,/jquery-3[.]3[.]1[.]1[.]min[.]js,117[.]68[.]66[.]27,/jquery-3[.]3[.]1[.]1[.]min[.]js,121[.]51[.]32[.]209,/jquery-3[.]3[.]1[.]1[.]min[.]js
HTTP POST URI	/jquery-3.3.2.2.min.js
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	4
process-inject.userwx	32
process-inject.allocator	1
proxy.behavior	2 (Use IE settings)
sleeptime	3000
useragent_header	Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko
uses_cookies	1
process-inject.execute	ntdll:RtlUserThreadStart, NtQueueApcThread-s, ntdll:RtlUserThreadStart, RtlCreateUserThread
Watermark	305419896
Beacon Stage Cleanup	1