""ET TROJAN SmartLoader CnC Exfil (screen.bmp)""

SID: 2051455

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_03_04, deployment Perimeter, malware_family SmartLoader, confidence High, signature_severity Critical, updated_at 2024_03_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: "PUT"

  • Value: "/loader/screen/" Depth: 15

  • Value: "filename|3d 22|screen|2e|bmp|22 0d 0a 0d 0a 42 4d|"

  • Value: "name|3d 22|data|22 0d 0a 0d 0a 7b 22|data|22 3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • http_client_body

source