""ET USER_AGENTS Observed Suspicious User-Agent (altera forma)""

SID: 2032948

Revision: 1

Class Type: bad-unknown

Metadata: attack_target Client_Endpoint, created_at 2021_05_12, deployment Perimeter, performance_impact Low, signature_severity Informational, updated_at 2021_05_12

Reference:

  • md5

  • f019d3031c3aaf45dbd3630a33ab0991

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|altera|20|forma|0d 0a|"

Within:

PCRE:

Special Options:

  • fast_pattern

  • http_header

source