""ET CURRENT_EVENTS DRIVEBY Likely Evil EXE with no referer from HFS webserver (used by Unknown EK)""
SID: 2020500
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2015_02_23, deployment Perimeter, signature_severity Major, tag DriveBy, updated_at 2015_02_23
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,from_server
Contents:
-
Value: "Server|3a 20|HFS"
-
Value: "MZ"
Within: 2
PCRE:
Special Options:
-
http_header
-
fast_pattern
-
file_data