COM Hijack via Sdclt

Status: test
Severity: high
Log source: category registry_set, product windows
Author: Omkar Gudhate
Source: github.com/SigmaHQ/sigma

Detects changes to 'HKCU\Software\Classes\Folder\shell\open\command\DelegateExecute'

MITRE ATT&CK coverage

Tactic	Techniques
Persistence	`T1546` Event Triggered Execution
Privilege Escalation	`T1546` Event Triggered Execution `T1548` Abuse Elevation Control Mechanism

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 13: RegistryEvent (Value Set)

Rule body

title: COM Hijack via Sdclt
id: 07743f65-7ec9-404a-a519-913db7118a8d
status: test
description: Detects changes to 'HKCU\Software\Classes\Folder\shell\open\command\DelegateExecute'
references:
    - http://blog.sevagas.com/?Yet-another-sdclt-UAC-bypass
    - https://www.exploit-db.com/exploits/47696
author: Omkar Gudhate
date: 2020-09-27
modified: 2023-09-28
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1546
    - attack.t1548
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains: '\Software\Classes\Folder\shell\open\command\DelegateExecute'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: `condition`

selection

Stage 1: `selection`

selection:
    TargetObject|contains: '\Software\Classes\Folder\shell\open\command\DelegateExecute'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`TargetObject`	match	`\Software\Classes\Folder\shell\open\command\DelegateExecute`	`field:"TargetObject" kind:match value:"\Software\Classes\Folder\shell\open\command\DelegateExecute"`

COM Hijack via Sdclt

MITRE ATT&CK coverage

Telemetry coverage

Rule body

Stages and Predicates

Stage 0: condition

Stage 1: selection

Indicators

Stage 0: `condition`

Stage 1: `selection`