Detection rules › Sigma

Defrag Deactivation - Security

Status
test
Severity
medium
Log source
product windows, service security
Author
Florian Roth (Nextron Systems), Bartlomiej Czyz (@bczyz1)
Source
github.com/SigmaHQ/sigma

Detects the deactivation and disabling of the Scheduled defragmentation task as seen by Slingshot APT group

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1053 Scheduled Task/Job
PersistenceT1053 Scheduled Task/Job
Privilege EscalationT1053 Scheduled Task/Job

Event coverage

Rule body yaml

title: Defrag Deactivation - Security
id: c5a178bf-9cfb-4340-b584-e4df39b6a3e7
related:
    - id: 958d81aa-8566-4cea-a565-59ccd4df27b0
      type: derived
status: test
description: Detects the deactivation and disabling of the Scheduled defragmentation task as seen by Slingshot APT group
references:
    - https://securelist.com/apt-slingshot/84312/
author: Florian Roth (Nextron Systems), Bartlomiej Czyz (@bczyz1)
date: 2019-03-04
modified: 2022-11-27
tags:
    - attack.privilege-escalation
    - attack.execution
    - attack.persistence
    - attack.t1053
    - attack.s0111
    - detection.emerging-threats
logsource:
    product: windows
    service: security
    definition: 'Requirements: Audit Policy : Audit Other Object Access Events > Success'
detection:
    selection:
        EventID: 4701
        TaskName: '\Microsoft\Windows\Defrag\ScheduledDefrag'
    condition: selection
falsepositives:
    - Unknown
level: medium

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    EventID: 4701
    TaskName: '\Microsoft\Windows\Defrag\ScheduledDefrag'

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
TaskNameeq
  • \Microsoft\Windows\Defrag\ScheduledDefrag