Cobalt Stike Beacon Detected – 121[.]199[.]38[.]116:443

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 2021-11-12T21:08:48.657520

General Information

17342429503834510000

Cloud Provider
Cloud Region
Service
Domains	N/A
Hostnames	N/A
HTTP Host	121[.]199[.]38[.]116
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)	Hangzhou
LOCATION (COUNTRY CODE)	CN
LOCATION (COUNTRY NAME)	China
LOCATION (LATITUDE)	30.29365
LOCATION (LONGITUDE)	120.16142
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	true
SSL FINGERPRINT (SHA1)	148a4ec1783ef5cb6b8f42d6e5c83361c2cf01fe
SSL ISSUED	20210330161126Z
SSL EXPIRES	20210628161126Z
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,image/webp,image/apng,*/*;q=0[.]8, Host: www[.]microsoft[.]com, id
http-post.client	Accept: text/html,application/xhtml+xml,application/xml;q=0[.]9,image/webp,image/apng,*/*;q=0[.]8, Host: www[.]microsoft[.]com, id
DNS Beacon MaxDNS	N/A
DNS Beacon Idle	N/A
Beacon Jitter	N/A
dns-beacon.strategy_fail_seconds	300
dns-beacon.strategy_rotate_seconds	-1
dns-beacon.strategy_fail_x	-1
HTTP GET URI	api[.]360[.]net[.]cdn[.]dnsv1[.]com,/js/jquery-3[.]3[.]1[.]min,222[.]218[.]80[.]166,/js/jquery-3[.]3[.]1[.]min,61[.]241[.]110[.]81,/js/jquery-3[.]3[.]1[.]min,27[.]159[.]95[.]75,/js/jquery-3[.]3[.]1[.]min,121[.]199[.]38[.]116,/js/jquery-3[.]3[.]1[.]min
HTTP POST URI	/js/jquery-3.3.2.min.js
Max GET Size	1398127
Port	443
post-ex.spawnto_x64	%windir%\sysnative\svchost[.]exe
post-ex.spawnto_x86	%windir%\syswow64\svchost[.]exe
process-inject.startrwx	64
process-inject.userwx	64
process-inject.allocator	N/A
proxy.behavior	2 (Use IE settings)
sleeptime	3000
useragent_header	Mozilla/5.0 (Linux; Android 4.1.1; Nexus 7 Build/JRO03D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Safari
uses_cookies	N/A
process-inject.execute	CreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark	426352781
Beacon Stage Cleanup	1