""ET CURRENT_EVENTS RIG EK URI Struct Mar 13 2017 M2""

SID: 2024049

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2017_03_13, deployment Perimeter, malware_family Exploit_Kit_RIG, performance_impact Low, signature_severity Major, tag Exploit_kit_RIG, updated_at 2017_03_13

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "QMvXcJ"

• Value: !"Cookie|3a|"

Within:

PCRE: "/(?=.?=[^&]{3,4}QMvXcJ).?=(?=[A-Za-z_-][0-9])(?=[a-z0-9_-][A-Z][a-z0-9_-][A-Z])(?=[A-Z0-9_-][a-z][A-Z0-9_-][a-z])[A-Za-z0-9_-]+&.?=(?=[A-Za-z_-][0-9])(?=[a-z0-9_-][A-Z][a-z0-9_-][A-Z])(?=[A-Z0-9_-][a-z][A-Z0-9_-]*[a-z])[A-Za-z0-9_-]+(?:&|$)/U"

Special Options:

• http_uri

source