""ET TROJAN DeerStealer CnC Activity M1""

SID: 2055003

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_08_07, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Critical, updated_at 2024_08_07

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: "|fd ff ff ff 00 00 00 00 03 00 00 00 00 00 00 00|" Depth: 16

  • Value: "Accept|3a 20 2a 2f 2a 0d 0a|"

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

  • Value: !"Referer|3a 20|"

  • Value: "|0d 0a|pid|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_client_body

  • fast_pattern

  • http_header

  • http_header

  • http_header

  • http_header

source