
title: Disabled IE Security Features
author: Florian Roth
date: 2020/06/19
description: Detects command lines that indicate unwanted modifications to registry
  keys that disable important Internet Explorer security features
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    CommandLine: '* -name IEHarden *'
  SELECTION_3:
    CommandLine: '* -value 0 *'
  SELECTION_4:
    CommandLine: '* -name DEPOff *'
  SELECTION_5:
    CommandLine: '* -value 1 *'
  SELECTION_6:
    CommandLine: '* -name DisableFirstRunCustomize *'
  SELECTION_7:
    CommandLine: '* -value 2 *'
  condition: (SELECTION_1 and ((SELECTION_2 and SELECTION_3) or (SELECTION_4 and SELECTION_5)
    or (SELECTION_6 and SELECTION_7)))
falsepositives:
- Unknown, maybe some security software installer disables these features temporarily
id: fb50eb7a-5ab1-43ae-bcc9-091818cb8424
level: high
logsource:
  category: process_creation
  product: windows
references:
- https://unit42.paloaltonetworks.com/operation-ke3chang-resurfaces-with-new-tidepool-malware/
status: experimental
tags:
- attack.defense_evasion
- attack.t1562.001
- attack.t1089
ruletype: SIGMA
