""ET TROJAN SmartLoader CnC Activity""

SID: 2051456

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 Medium, signature_severity Major, 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/" Depth: 8

  • Value: "|7b 22|data|22 3a 20|" Depth: 9

  • Value: "Content-Type|3a 20|application/json|0d 0a|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^Host\x3a\x20(?:[0-9]{1,3}.){3}[0-9]{1,3}$/Hm"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_header

  • http_header

source