Cobalt Stike Beacon Detected – 49[.]234[.]105[.]212:8443

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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 2021-11-15T14:36:58.664987

Cobalt Strike
Cobalt Strike

General Information

867458584
Cloud ProviderTencent Cloud
Cloud RegionN/A
ServiceN/A
DomainsN/A
HostnamesN/A
HTTP Host49[.]234[.]105[.]212
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)Guangzhou
LOCATION (COUNTRY CODE)CN
LOCATION (COUNTRY NAME)China
LOCATION (LATITUDE)23.11667
LOCATION (LONGITUDE)113.25
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDN/A
SSL FINGERPRINT (SHA1)5ae51d2ade928464a20eea117e19c669906e5027
SSL ISSUED20210911090751Z
SSL EXPIRES20310909090751Z
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.clientAccept: */*, Host: test[.]kurokoleung[.]cn, session-token=, skin=noskin;, csm-hit=s-24KU11BB82RZSYGJ3BDK|1585758520, Cookie
http-post.clientAccept: */*, Content-Type: text/xml, X-Requested-With: XMLHttpRequest, Host: test[.]kurokoleung[.]cn, sz=160×600, oe=oe=ISO-8859-1;, sn
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 URItest[.]kurokoleung[.]cn,/s/ref=nb_sb_noss_1/167-3294888-0262949/field-keywords=books
HTTP POST URI/N4215/adj/aliyun.cn.sr.aps
Max GET Size1048576
Port8443
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 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko
uses_cookies1
process-inject.executeCreateThread, SetThreadContext, CreateRemoteThread, RtlCreateUserThread
Watermark1359593325
Beacon Stage CleanupN/A
Available for Amazon Prime