""ET USER_AGENTS Suspicious User-Agent (REBOL)""

SID: 2034021

Revision: 2

Class Type: bad-unknown

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_09_24, deployment Perimeter, performance_impact Low, signature_severity Minor, updated_at 2021_09_24

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 20|REBOL"

Within:

PCRE:

Special Options:

  • http_header

  • nocase

source