""ET TROJAN TA453 Related Activity (POST)""

SID: 2034889

Revision: 3

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_01_11, deployment Perimeter, deployment SSLDecrypt, malware_family APT35, malware_family CharmingKitten, malware_family Phosphorus, performance_impact Significant, signature_severity Major, updated_at 2024_04_04

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: "/Api/" Depth: 5

  • Value: "Data=" Depth: 5

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

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/Content-type\x3a\x20[^\r\n]+\r\nContent-length\x3a\x20[^\r\n]+\r\n/H"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_header

  • http_header

source