HackTool - SharpImpersonation Execution — Sigma Rule

Rule metadata and linked tags

Author: Sai Prashanth Pulisetti @pulisettis, Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: high. Source dates: 2022-12-27 / 2023-02-13.

{
  "product": "windows",
  "category": "process_creation"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: da284bc1c676078d0bc4b774fbfe5cd169fa739560017d67de87559f12a76166

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: HackTool - SharpImpersonation Execution
id: f89b08d0-77ad-4728-817b-9b16c5a69c7a
related:
    - id: cf0c254b-22f1-4b2b-8221-e137b3c0af94
      type: similar
status: test
description: Detects execution of the SharpImpersonation tool. Which can be used to manipulate tokens on a Windows computers remotely (PsExec/WmiExec) or interactively
references:
    - https://s3cur3th1ssh1t.github.io/SharpImpersonation-Introduction/
    - https://github.com/S3cur3Th1sSh1t/SharpImpersonation
author: Sai Prashanth Pulisetti @pulisettis, Nasreddine Bencherchali (Nextron Systems)
date: 2022-12-27
modified: 2023-02-13
tags:
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1134.001
    - attack.t1134.003
logsource:
    product: windows
    category: process_creation
detection:
    selection_img:
        - Image|endswith: '\SharpImpersonation.exe'
        - OriginalFileName: 'SharpImpersonation.exe'
    selection_cli:
        - CommandLine|contains|all:
              - ' user:'
              - ' binary:'
        - CommandLine|contains|all:
              - ' user:'
              - ' shellcode:'
        - CommandLine|contains:
              - ' technique:CreateProcessAsUserW'
              - ' technique:ImpersonateLoggedOnuser'
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://s3cur3th1ssh1t.github.io/SharpImpersonation-Introduction/
• https://github.com/S3cur3Th1sSh1t/SharpImpersonation