""ET INFO User-Agent with Non Standard Characters""
SID: 2044354
Revision: 1
Class Type: bad-unknown
Metadata: attack_target Client_Endpoint, created_at 2023_02_27, deployment Perimeter, signature_severity Informational, updated_at 2023_02_27
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "|3b 3b|"
-
Value: "|3b 3b 2f 2e|"
-
Value: "|2e 0d 0a|"
Within:
PCRE: "/^User-Agent|3a 20|[^\r\n]+\x3b\x3b[^\r\n]+\x3b\x3b\x2f\x2e[^\r\n]+\x2e\r\n/H"
Special Options:
-
http_header
-
http_header
-
fast_pattern
-
http_header