""ET USER_AGENTS Microsoft Office Existence Discovery User-Agent""
SID: 2041131
Revision: 1
Class Type: misc-activity
Metadata: attack_target Client_Endpoint, created_at 2022_11_30, deployment Perimeter, signature_severity Informational, updated_at 2022_11_30
Reference:
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 Office Existence Discovery|0d 0a|"
Within:
PCRE:
Special Options:
- http_header