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Detection rules › Sigma

Potential Execution of Sysinternals Tools

Status
test
Severity
low
Log source
category process_creation, product windows
Author
Markus Neis
Source
github.com/SigmaHQ/sigma

Detects command lines that contain the 'accepteula' flag which could be a sign of execution of one of the Sysinternals tools

Known false positives

  • Legitimate use of SysInternals tools
  • Programs that use the same command line flag

MITRE ATT&CK coverage

TacticTechniques
Resource Development

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 1: Process creation
Security-AuditingEvent ID 4688: A new process has been created.

Rule body

title: Potential Execution of Sysinternals Tools
id: 7cccd811-7ae9-4ebe-9afd-cb5c406b824b
related:
    - id: 25ffa65d-76d8-4da5-a832-3f2b0136e133
      type: derived
status: test
description: Detects command lines that contain the 'accepteula' flag which could be a sign of execution of one of the Sysinternals tools
references:
    - https://twitter.com/Moti_B/status/1008587936735035392
author: Markus Neis
date: 2017-08-28
modified: 2024-03-13
tags:
    - attack.resource-development
    - attack.t1588.002
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|windash: ' -accepteula'
    condition: selection
falsepositives:
    - Legitimate use of SysInternals tools
    - Programs that use the same command line flag
level: low

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    CommandLine|contains|windash: ' -accepteula'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
CommandLinematch
  • -accepteula transforms: windash
field:"CommandLine" kind:match value:" -accepteula"