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Detection rules › Sigma

Exports Registry Key To an Alternate Data Stream

Status
test
Severity
high
Log source
product windows, category create_stream_hash
Author
Oddvar Moe, Sander Wiebing, oscd.community
Source
github.com/SigmaHQ/sigma

Exports the target Registry key and hides it in the specified alternate data stream.

MITRE ATT&CK coverage

TacticTechniques
StealthT1564.004 Hide Artifacts: NTFS File Attributes

Event coverage

ProviderEventTitle
SysmonEvent ID 15FileCreateStreamHash

Rule body yaml

title: Exports Registry Key To an Alternate Data Stream
id: 0d7a9363-af70-4e7b-a3b7-1a176b7fbe84
status: test
description: Exports the target Registry key and hides it in the specified alternate data stream.
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Regedit/
    - https://gist.github.com/api0cradle/cdd2d0d0ec9abb686f0e89306e277b8f
author: Oddvar Moe, Sander Wiebing, oscd.community
date: 2020-10-07
modified: 2021-11-27
tags:
    - attack.stealth
    - attack.t1564.004
logsource:
    product: windows
    category: create_stream_hash
detection:
    selection:
        Image|endswith: '\regedit.exe'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    Image|endswith: '\regedit.exe'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
Imageends_with
  • \regedit.exe corpus 8 (sigma 8)