""ET USER_AGENTS Suspicious User-Agent (App4)""
SID: 2008073
Revision: 13
Class Type: trojan-activity
Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, signature_severity Major, tag User_Agent, updated_at 2017_10_30
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| App"
-
Value: !"Host|3a| liveupdate.symantecliveupdate.com|0d 0a|"
Within:
PCRE: "/^User-Agent\x3a App\d/Hm"
Special Options:
-
http_header
-
http_header