""ET SCAN Suspicious User-Agent Containing Web Scan/er Likely Web Scanner""

SID: 2010088

Revision: 8

Class Type: attempted-recon

Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, signature_severity Major, tag User_Agent, updated_at 2017_05_11

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HTTP_SERVERS

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "User|2D|Agent|3A|"

  • Value: "web"

  • Value: "scan"

Within:

PCRE: "/^User-Agent\x3A[^\n]+web[^\n]+scan/Hmi"

Special Options:

  • http_header

  • http_header

  • nocase

  • http_header

  • nocase

source