Cobalt Stike Beacon Detected – 154[.]39[.]240[.]24:2083

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 2021-11-09T05:08:09.249080

General Information

9.97779542707086e+36

Cloud Provider
Cloud Region
Service
Domains	N/A
Hostnames	N/A
HTTP Host	154[.]39[.]240[.]24
ISP	HONG KONG Megalayer Technology Co.,Limited
ORG	HONG KONG Megalayer Technology Co.,Limited
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)	Hong Kong
LOCATION (COUNTRY CODE)	HK
LOCATION (COUNTRY NAME)	Hong Kong
LOCATION (LATITUDE)	22.27832
LOCATION (LONGITUDE)	114.17469
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	N/A
SSL FINGERPRINT (SHA1)	04ee403cbe8d6158b21586a5a973dee16e9ed5af
SSL ISSUED	20210420000000Z
SSL EXPIRES	20220419235959Z
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	Accept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*l;q=0[.]8, Referer: https://mp[.]weixin[.]qq[.]com, Pragma: no-cache, Cache-Control: no-cache, Host: qq[.]flashnewupdate[.]xyz, [.]html
http-post.client	Content-Type: text/html, Referer: https://map[.]weixin[.]qq[.]com, Pragma: no-cache, Cache-Control: no-cache, Host: qq[.]flashnewupdate[.]xyz, [.]html
DNS Beacon MaxDNS	255
DNS Beacon Idle	N/A
Beacon Jitter	N/A
dns-beacon.strategy_fail_seconds	N/A
dns-beacon.strategy_rotate_seconds	N/A
dns-beacon.strategy_fail_x	N/A
HTTP GET URI	qq[.]flashnewupdate[.]xyz,/weixin/
HTTP POST URI	/qq/
Max GET Size	1398104
Port	2083
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	3000
useragent_header	WeChat/8.0.4.34 CFNetwork/1220.1 Darwin/20.3.0
uses_cookies	N/A
process-inject.execute	CreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark	305419896
Beacon Stage Cleanup	N/A