Cobalt Stike Beacon Detected – 172[.]104[.]54[.]70:443

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 2021-11-09T22:40:14.762411

Cobalt Strike
Cobalt Strike

General Information

382992331
Cloud ProviderLinode
Cloud Regionsg-04
ServiceN/A
Domainslinodeusercontent[.]com
Hostnames172-104-54-70[.]ip[.]linodeusercontent[.]com
HTTP Host172[.]104[.]54[.]70
ISPLinode, LLC
ORGLinode
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)Singapore
LOCATION (COUNTRY CODE)SG
LOCATION (COUNTRY NAME)Singapore
LOCATION (LATITUDE)1.28967
LOCATION (LONGITUDE)103.85007
LOCATION (POSTAL CODE)N/A
SSL SERIAL
SSL EXPIREDN/A
SSL FINGERPRINT (SHA1)a4df56bd68d6fa7be7fb84ce47190ac9978a26c6
SSL ISSUED20211106132345Z
SSL EXPIRES20221106132345Z
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.clientHost: 172[.]104[.]54[.]70, Accept: */*, Cookie: MicrosoftApplicationsTelemetryDeviceId=95c18d8-4dce9854;ClientId=1C0F6C5D910F9;MSPAuth=3EkAjDKjI;xid=730bf7;wla42=tTaXcMQ56YA5vV, wa, path=/calendar
http-post.clientHost: 172[.]104[.]54[.]70, Accept: */*, wa, wla42=, xid=730bf7;, MSPAuth=3EkAjDKjI;, ClientId=1C0F6C5D910F9;, MicrosoftApplicationsTelemetryDeviceId=95c18d8-4dce9854;, Cookie
DNS Beacon MaxDNSN/A
DNS Beacon IdleN/A
Beacon Jitter22
dns-beacon.strategy_fail_seconds-1
dns-beacon.strategy_rotate_seconds-1
dns-beacon.strategy_fail_x-1
HTTP GET URI172[.]104[.]54[.]70,/owa/tlRDjDE3qDHpktR7FYfgH-xT,45[.]76[.]97[.]205,/owa/tlRDjDE3qDHpktR7FYfgH-xT
HTTP POST URI/owa/8fUb2yfbsMVFyiZGCHl1UVX52
Max GET Size1398102
Port443
post-ex.spawnto_x64%windir%\sysnative\logman[.]exe
post-ex.spawnto_x86%windir%\syswow64\logman[.]exe
process-inject.startrwx64
process-inject.userwx32
process-inject.allocator1
proxy.behavior2 (Use IE settings)
sleeptime3000
useragent_headerMozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.0 Safari/537.36
uses_cookies1
process-inject.executentdll.dll:RtlUserThreadStart, NtQueueApcThread-s, SetThreadContext, CreateRemoteThread, kernel32.dll:LoadLibraryA, RtlCreateUserThread
Watermark1234567890
Beacon Stage Cleanup1