""ET USER_AGENTS Suspcious LeakIX User-Agent (l9explore)""

SID: 2035314

Revision: 1

Class Type: bad-unknown

Metadata: affected_product Linux, attack_target Server, created_at 2022_02_28, deployment Perimeter, signature_severity Minor, updated_at 2022_02_28

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "User-Agent|3a 20|l9explore"

Within:

PCRE:

Special Options:

  • fast_pattern

  • http_header

source