""ET CURRENT_EVENTS Underminer EK IE Exploit""

SID: 2025911

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2018_07_26, deployment Perimeter, signature_severity Major, tag Underminer_EK, updated_at 2018_07_26

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

• Value: "IE=EmulateIE9"

• Value: "</head"

• Value: "<body"

• Value: "<script"

• Value: "!!window.ActiveXObject"

• Value: "try"

• Value: "parent.parent.setLocalStoreUserData"

Within: 200

PCRE: "/^\s([\x22\x27][A-F0-9a-f]{32}[\x22\x27]\s)\s\x3b\s}\scatch\s(e)\s{\s}\s}\s<\/script>\s*<\/body>/Rsi"

Special Options:

• file_data

• nocase

• nocase

• nocase

• nocase

• nocase

• nocase

source