""ET TROJAN Suspected TA401/AridViper APT Micropsia Variant Related Activity (POST)""

SID: 2052361

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_05_02, deployment Perimeter, malware_family AridViper, malware_family TA401, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2024_05_02

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: !"|2e|"

  • Value: "Ace=" Depth: 4

  • Value: "Accept-Encoding|3a 20|UTF8|0d 0a|"

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded|3b 20|charset=utf-8|0d 0a|"

  • Value: !"Referer|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • fast_pattern

  • http_header

  • http_header

  • http_header

source