""ET USER_AGENTS Observed Reconnaissance Related UA""

SID: 2047994

Revision: 1

Class Type: misc-activity

Metadata: attack_target Client_Endpoint, created_at 2023_09_11, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, updated_at 2023_09_11, reviewed_at 2023_09_11

Reference:

• Link

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|Mozilla/5.0|20 28|Windows NT 6.1|3b 20|WOW64|3b 20|rv|3a|68.0|29 09 09 09 20 20 20 20|Gecko/20100101|20|Firefox/68.0|0d 0a|"

Within:

PCRE:

Special Options:

• http_header

source