""ET TROJAN Cobalt Strike Activity (GET)""

SID: 2037713

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_07_07, deployment Perimeter, deployment SSLDecrypt, malware_family TA471, malware_family UNC2589, signature_severity Major, updated_at 2022_07_07

Reference:

  • md5

  • 28f18fc7d9a0ab530742c2314cbd5c32

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "/field-keywords/"

  • Value: "PREF=ID=" Depth: 8

Within:

PCRE: "/^User-Agent\x3a\x20[^\r\n]+_/Hm"

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_cookie

source