Suspicious RASdial Activity

Hunt Hypothesis

Detects suspicious process related to rasdial.exe

Detection Rule

Sigma (Original)

title: Suspicious RASdial Activity
id: 6bba49bf-7f8c-47d6-a1bb-6b4dece4640e
status: test
description: Detects suspicious process related to rasdial.exe
references:
    - https://twitter.com/subTee/status/891298217907830785
author: juju4
date: 2019-01-16
modified: 2021-11-27
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: 'rasdial.exe'
    condition: selection
falsepositives:
    - False positives depend on scripts and administrative tools used in the monitored environment
level: medium

KQL (Azure Sentinel)

imProcessCreate
| where TargetProcessName endswith "rasdial.exe"

Required Data Sources

False Positive Guidance

• False positives depend on scripts and administrative tools used in the monitored environment

MITRE ATT&CK Context

• Tactic: Execution
• Technique: T1059 — Command and Scripting Interpreter

References

• https://twitter.com/subTee/status/891298217907830785
• SigmaHQ Rule