""ET CURRENT_EVENTS Common Unhidebody Function Observed in Phishing Landing""

SID: 2029732

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_03_24, deployment Perimeter, signature_severity Minor, tag Phishing, updated_at 2020_03_24

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "function unhideBody()"

  • Value: "var bodyElems = document.getElementsByTagName(|22|body|22|)|3b|"

  • Value: "bodyElems[0].style.visibility =|20 22|visible|22 3b|"

  • Value: "onload=|22|unhideBody()|22|"

  • Value: "method="

Within:

PCRE: "/^["']?post/Ri"

Special Options:

  • file_data

  • nocase

  • fast_pattern

  • nocase

  • nocase

  • nocase

source