""ET TROJAN Win32/RokRat CnC Activity (POST)""

SID: 2045278

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_05_01, deployment Perimeter, deployment SSLDecrypt, malware_family Rokrat, confidence High, signature_severity Major, updated_at 2023_05_01

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "|2f|uploadfile|3f|path|3d 2f|Comment|26|filename|3d|" Depth: 35

  • Value: "Authorization|3a 20|Bearer"

  • Value: "Googlebot"

  • Value: "Content|2d|Type|3a 20|voice|2f|mp3|20|"

Within:

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

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • http_client_body

source