Cobalt Stike Beacon Detected – 43[.]128[.]21[.]144:443

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 2021-11-19T13:12:13.687941

General Information

4.30886470381886e+41

Cloud Provider
Cloud Region
Service
Domains	N/A
Hostnames	N/A
HTTP Host	43[.]128[.]21[.]144
ISP	Tencent Building, Kejizhongyi Avenue
ORG	Asia Pacific Network Information Center, Pty. 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	cloudflare
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	true
SSL FINGERPRINT (SHA1)	5b2cd3aa8cce7096509d7324c91b56bfd0edabe8
SSL ISSUED	20210111062200Z
SSL EXPIRES	20210411062200Z
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	Host: www[.]360safe[.]info, Connection: close, reg_fb_gate=, Cookie, decomposition=true
http-post.client	Host: www[.]360safe[.]info, Connection: close, Content-Type: text/plain, __session__id=, Cookie
DNS Beacon MaxDNS	241
DNS Beacon Idle	544129749
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	www[.]360safe[.]info,/an
HTTP POST URI	/ba
Max GET Size	2796804
Port	443
post-ex.spawnto_x64	%windir%\sysnative\runonce[.]exe
post-ex.spawnto_x86	%windir%\syswow64\runonce[.]exe
process-inject.startrwx	4
process-inject.userwx	32
process-inject.allocator	N/A
proxy.behavior	2 (Use IE settings)
sleeptime	1063
useragent_header	Mozilla/5.0 (Linux; Android 7.0; Pixel C Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0
uses_cookies	1
process-inject.execute	CreateThread, RtlCreateUserThread, CreateRemoteThread
Watermark	305419896
Beacon Stage Cleanup	1