""ET TROJAN Win32/SupremeBot CnC Checkin (POST) M1""

SID: 2046643

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_06_26, deployment Perimeter, malware_family SupremeBot, confidence High, signature_severity Critical, updated_at 2023_06_26

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: "connection.php"

  • Value: "m=" Depth: 2

  • Value: "Connection|3a 20|Keep-Alive|0d 0a|"

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|"

  • Value: "Content-Length|3a 20|38|0d 0a|"

Within:

PCRE: "/^m=(?:[0-9a-z]{8})\x2d(?:[0-9a-z]{4})\x2d(?:[0-9a-z]{4})\x2d(?:[0-9a-z]{4})\x2d(?:[0-9a-z]{12})$/P"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_header

  • http_header

  • http_header

source