""ET MALWARE Suspicious User-Agent (006)""

SID: 2006388

Revision: 10

Class Type: trojan-activity

Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, signature_severity Major, tag User_Agent, updated_at 2019_08_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: "User-Agent|3a| 00"

Within:

PCRE: "/User-Agent\: 00\d+\x0d\x0a/H"

Special Options:

  • http_header

source