""ET TROJAN TrollAgent Checkin""

SID: 2049964

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2024_01_09, deployment Perimeter, deployment SSLDecrypt, malware_family TrollAgent, confidence Medium, signature_severity Critical, updated_at 2024_01_10, reviewed_at 2024_01_10

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: "/index.php"

  • Value: "User-Agent|3a 20|Go-http-client/"

  • Value: ".p-e.kr|0d 0a|"

  • Value: "a=" Depth: 2

Within:

PCRE: "/^Host\x3a\x20[^\r\n]+.p-e.kr/Hmi"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • fast_pattern

  • http_client_body

source