""ET TROJAN Villain C2 Framework CnC Exfil (POST)""

SID: 2044260

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_21, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, updated_at 2023_02_21

Reference:

  • md5

  • c08cd421d6f47dcaa2c30395ddf057d8

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "POST"

  • Value: "WindowsPowerShell/"

  • Value: "|0D 0A 0D 0A 20 20 20 20|Directory|3a 20|C|3a 5c|Users|5c|admin|5c|" Depth: 34

  • Value: "|0d 0a|Mode|20 20|"

  • Value: "|20 20 20|LastWriteTime|20 20 20 20|"

  • Value: "| 20 20|Length|20|Name|20 20|"

  • Value: "Authorization"

Within:

PCRE:

Special Options:

  • http_method

  • http_header

  • http_client_body

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_client_body

  • http_header

source