""ET TROJAN Win32/DoNot Observed UA (Mozilla 105.01.05)""

SID: 2043987

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_01_24, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, updated_at 2023_01_24

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "User-Agent|3a 20|Mozilla|20|105|2e|01|2e|05|0d 0a|"

Within:

PCRE:

Special Options:

  • http_header

source