""ET TROJAN Win32/KLBanker Activity (GET)""

SID: 2045613

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_05_08, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_05_08

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: ".php"

  • Value: "User-Agent|3a 20 22|Mozilla/5.0|20|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/User-Agent\x3a\x20\x22[^\r\n]+\x22\r\n/H"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

  • http_header

source