""ET TROJAN TA410 APT LookBack Client HTTP Activity (POST)""

SID: 2036412

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_04_28, deployment Perimeter, malware_family TA410, signature_severity Major, updated_at 2022_04_28

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: "/status.php?r="

  • Value: "id=1&op=report&status=" Depth: 22

  • Value: "Accept|3a 20|text/html, application/xhtml+xml, /|0d 0a|"

  • Value: "Accept-Encoding|3a 20|gzip, deflate|0d 0a|"

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

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/\r\nHost\x3a\x20[^\r\n]+\r\nContent-Length\x3a\x20[^\r\n]+\r\nConnection\x3a\x20[^\r\n]+\r\nCache-Control\x3a\x20[^\r\n]+\r\n\r\n$/H"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_header

  • http_header

  • http_header

  • http_header

source