""ET USER_AGENTS Observed Malicious User-Agent (Brute Force Attacks)""

SID: 2033315

Revision: 1

Class Type: bad-unknown

Metadata: created_at 2021_07_12, updated_at 2021_07_12

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|Microsoft|20|Office/14.0|20|(Windows|20|NT|20|6.1|3b 20|Microsoft|20|Outlook|20|14.0.7162|3b 20|Pro|0d 0a|"

Within:

PCRE:

Special Options:

• http_header

source