Cobalt Stike Beacon Detected – 8[.]140[.]105[.]214:2087

Cobalt Strike Beacon Detection Alerts

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 2021-11-14T01:19:49.487938

Cobalt Strike
Cobalt Strike

General Information

999415598
Cloud ProviderAlibaba Cloud
Cloud RegionN/A
ServiceN/A
DomainsN/A
HostnamesN/A
HTTP Host8[.]140[.]105[.]214
ISPHangzhou Alibaba Advertising Co.,Ltd.
ORGAliyun Computing Co.LTD
OSN/A
HTTPN/A
HTTP HTML HASHN/A
HTTP LOCATION/
HTTP REDIRECTS
HTTP ROBOTSN/A
HTTP ROBOTS HASHN/A
HTTP SECURITY.TXTN/A
HTTP SECURITY.TXT HASHN/A
HTTP SERVERN/A
HTTP SITEMAPN/A
HTTP SITEMAP HASHN/A
HTTP TITLEN/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 EXPIREDtrue
SSL FINGERPRINT (SHA1)cc6bf08aa8320d4adce69a869e60782d7a98adf4
SSL ISSUED20210415022234Z
SSL EXPIRES20210714022234Z
SSL CYPHERECDHE-RSA-AES256-GCM-SHA384
SSL VERSIONTLSv1/SSLv3
SSL TRUST (REVOKED)N/A
TAGScloud, self-signed


Cobalt Strike Beacon Information

Beacon TypeHTTPS
http-get.clientCookie
http-post.clientContent-Type: application/octet-stream, id
DNS Beacon MaxDNSN/A
DNS Beacon IdleN/A
Beacon JitterN/A
dns-beacon.strategy_fail_secondsN/A
dns-beacon.strategy_rotate_secondsN/A
dns-beacon.strategy_fail_xN/A
HTTP GET URItencent-com[.]cn,/g[.]pixel
HTTP POST URI/submit.php
Max GET Size1048576
Port2087
post-ex.spawnto_x64%windir%\sysnative\rundll32[.]exe
post-ex.spawnto_x86%windir%\syswow64\rundll32[.]exe
process-inject.startrwx64
process-inject.userwx64
process-inject.allocatorN/A
proxy.behavior2 (Use IE settings)
sleeptime60000
useragent_headerMozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; InfoPath.1)
uses_cookies1
process-inject.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark1359593325
Beacon Stage CleanupN/A