""ET USER_AGENTS Suspicious User-Agent (Hello World)""
SID: 2038507
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2022_08_12, deployment Perimeter, deployment SSLDecrypt, signature_severity Informational, updated_at 2022_08_12
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|Hello World|0d 0a|"
Within:
PCRE:
Special Options:
-
http_header
-
nocase
-
fast_pattern