""ET CURRENT_EVENTS RIG EK URI struct Oct 24 2016 (RIG-v)""

SID: 2023401

Revision: 5

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 2016_10_24, deployment Perimeter, performance_impact Low, signature_severity Major, tag Exploit_kit_RIG, updated_at 2016_12_30

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "/?" Depth: 2

• Value: "q="

• Value: "oq="

Within:

PCRE: "/^\/(?=.?[&?][a-z]{2}_[a-z]{2}=\d+(?:&|$))(?=.?[&?]q=(?:[A-Za-z0-9_-]{4})(?:[A-Za-z0-9_-]{2}|[A-Za-z0-9_-]{3})+(?:&|$))(?=.?[&?]oq=(?:[A-Za-z0-9_-]{4})(?:[A-Za-z0-9_-]{2}|[A-Za-z0-9_-]{3})+(?:&|$)).?[&?][a-z]{3}=[A-Za-z_]{3,20}(?=[a-z\d]\x2e)(?=[a-z\x2e]\d)[a-z\d\x2e]+(?:&|$)/U"

Special Options:

• http_uri

• http_uri

• http_uri

source