Cobalt Stike Beacon Detected – 193[.]42[.]37[.]14:443

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 2021-11-17T18:38:47.210874

General Information

2.694719555316426e+41

Cloud Provider
Cloud Region
Service
Domains	yourbestnetwork[.]net
Hostnames	hostedby[.]yourbestnetwork[.]net
HTTP Host	193[.]42[.]37[.]14
ISP	HZ Hosting Ltd
ORG	HZ Hosting 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	N/A
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)	51.5085
LOCATION (LONGITUDE)	-0.1257
LOCATION (POSTAL CODE)	N/A
SSL SERIAL
SSL EXPIRED	N/A
SSL FINGERPRINT (SHA1)	3f0d1d54734dec0e7117319751a9d3b0b3064b70
SSL ISSUED	20211108162337Z
SSL EXPIRES	20220206162336Z
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: d23tk31acsmpan[.]cloudfront[.]net, Accept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*;q=0[.]8, Accept-Language: en-US,en;q=0[.]5, REF=ID=6Z4zQd, Cookie
http-post.client	Host: d23tk31acsmpan[.]cloudfront[.]net, Accept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*;q=0[.]8, Accept-Language: en-US,en;q=0[.]5, U=6Z4zQd, REF=ID=, Cookie
DNS Beacon MaxDNS	N/A
DNS Beacon Idle	N/A
Beacon Jitter	10
dns-beacon.strategy_fail_seconds	-1
dns-beacon.strategy_rotate_seconds	-1
dns-beacon.strategy_fail_x	-1
HTTP GET URI	d23tk31acsmpan[.]cloudfront[.]net,/safebrowsing/WmpZG/hCAjVKNWb3q5hl2vN0s7IGvexMbWix3Cs38
HTTP POST URI	/safebrowsing/Yg-l/1WNUjMlmhRPWOvAtVFXEszuGHNMva
Max GET Size	1048576
Port	443
post-ex.spawnto_x64	%windir%\sysnative\gpupdate[.]exe
post-ex.spawnto_x86	%windir%\syswow64\gpupdate[.]exe
process-inject.startrwx	64
process-inject.userwx	32
process-inject.allocator	N/A
proxy.behavior	2 (Use IE settings)
sleeptime	5000
useragent_header	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3818.0 Safari/537.36 Edg/77.0.188.0
uses_cookies	1
process-inject.execute	ntdll.dll:RtlUserThreadStart, NtQueueApcThread-s, SetThreadContext, CreateRemoteThread, kernel32.dll:LoadLibraryA, RtlCreateUserThread
Watermark	N/A
Beacon Stage Cleanup	1