""ET TROJAN AMOS CnC Exfiltration - /joinsystem (POST)""

SID: 2052602

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_05_14, deployment Perimeter, malware_family AMOSStealer, confidence High, signature_severity Critical, updated_at 2024_05_14

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: "/joinsystem"

  • Value: "BuildID=" Depth: 8

  • Value: "&user="

  • Value: !"Referer|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_header

source