Detection rules › Sigma
Local group enumeration triggered by Azure Virtual machine recovery tool
Detects scenarios where an attacker having compromised a virtual machine via serial cable attempts to enumerate local groups.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery | T1069.001 Permission Groups Discovery: Local Groups |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Security-Auditing | Event ID 4799 | A security-enabled local group membership was enumerated. |
Rule body yaml
title: Local group enumeration triggered by Azure Virtual machine recovery tool
description: Detects scenarios where an attacker having compromised a virtual machine via serial cable attempts to enumerate local groups.
references:
- https://www.mandiant.com/resources/blog/sim-swapping-abuse-azure-serial
tags:
- attack.discovery
- attack.t1069.001 # Permission Groups Discovery: Local Groups
author: mdecrevoisier
status: stable
logsource:
product: windows
service: security
detection:
selection: # C:\Packages\Plugins\Microsoft.Compute.VMAccessAgent\2.4.8\bin\JsonVMAccessExtension.exe
EventID: 4799
CallerProcessName|contains: 'Microsoft.Compute.VMAccessAgent'
condition: selection
falsepositives:
- Virtual machine recovery by administrator
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
EventID: 4799
CallerProcessName|contains: 'Microsoft.Compute.VMAccessAgent'
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.
| Field | Kind | Values |
|---|---|---|
CallerProcessName | match |
|