""ET TROJAN APT37 M2RAT CnC Server Command - CMD""

SID: 2044241

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_02_17, deployment SSLDecrypt, performance_impact Significant, confidence High, signature_severity Major, updated_at 2023_02_17

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "200"

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

  • Value: "CMD" Depth: 3

Within:

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source