Detection rules › Sigma
Disabled IE Security Features
Detects command lines that indicate unwanted modifications to registry keys that disable important Internet Explorer security features
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Impairment |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: Disabled IE Security Features
id: fb50eb7a-5ab1-43ae-bcc9-091818cb8424
status: test
description: Detects command lines that indicate unwanted modifications to registry keys that disable important Internet Explorer security features
references:
- https://unit42.paloaltonetworks.com/operation-ke3chang-resurfaces-with-new-tidepool-malware/
author: Florian Roth (Nextron Systems)
date: 2020-06-19
modified: 2021-11-27
tags:
- attack.defense-impairment
- attack.t1685
logsource:
category: process_creation
product: windows
detection:
selection1:
CommandLine|contains|all:
- ' -name IEHarden '
- ' -value 0 '
selection2:
CommandLine|contains|all:
- ' -name DEPOff '
- ' -value 1 '
selection3:
CommandLine|contains|all:
- ' -name DisableFirstRunCustomize '
- ' -value 2 '
condition: 1 of selection*
falsepositives:
- Unknown
level: high
Stages and Predicates
Stage 0: condition
1 of selection*Stage 1: selection1
selection1:
CommandLine|contains|all:
- ' -name IEHarden '
- ' -value 0 '
Stage 2: selection2
selection2:
CommandLine|contains|all:
- ' -name DEPOff '
- ' -value 1 '
Stage 3: selection3
selection3:
CommandLine|contains|all:
- ' -name DisableFirstRunCustomize '
- ' -value 2 '
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |