Cobalt Stike Beacon Detected – 1[.]13[.]183[.]183:443

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 2021-11-11T15:13:47.939523

Cobalt Strike
Cobalt Strike

General Information

4.166843130677803e+36
Cloud Provider
Cloud Region
Service
DomainsN/A
HostnamesN/A
HTTP Host1[.]13[.]183[.]183
ISPShenzhen Tencent Computer Systems Company Limited
ORGTencent cloud computing (Beijing) 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 EXPIREDN/A
SSL FINGERPRINT (SHA1)a3ce4903f5424b50b1dd79ff16b2198b0d2c35c7
SSL ISSUED20210929000000Z
SSL EXPIRES20220928235959Z
SSL CYPHERECDHE-RSA-AES256-GCM-SHA384
SSL VERSIONTLSv1/SSLv3
SSL TRUST (REVOKED)N/A
TAGS


Cobalt Strike Beacon Information

Beacon TypeHTTPS
http-get.clientAccept: text/html,application/xhtml+xml,application/xml;q=0[.]9,*/*l;q=0[.]8, Referer: http://www[.]google[.]com, Pragma: no-cache, Cache-Control: no-cache, -[.]jpg
http-post.clientContent-Type: application/octet-stream, Referer: http://www[.]google[.]com, Pragma: no-cache, Cache-Control: no-cache, [.]asp
DNS Beacon MaxDNS255
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 URI1[.]13[.]183[.]183,/image/
HTTP POST URI/history/
Max GET Size1398104
Port443
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)
sleeptime5000
useragent_headerMozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/5.0)
uses_cookiesN/A
process-inject.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark305419896
Beacon Stage CleanupN/A