Detection rules › Sigma
UNC2452 PowerShell Pattern
Detects a specific PowerShell command line pattern used by the UNC2452 actors as mentioned in Microsoft and Symantec reports
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | T1047 Windows Management Instrumentation, T1059.001 Command and Scripting Interpreter: PowerShell |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
| Security-Auditing | Event ID 4688 | A new process has been created. |
Rule body yaml
title: UNC2452 PowerShell Pattern
id: b7155193-8a81-4d8f-805d-88de864ca50c
status: test
description: Detects a specific PowerShell command line pattern used by the UNC2452 actors as mentioned in Microsoft and Symantec reports
references:
- https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/solarwinds-raindrop-malware
- https://www.microsoft.com/security/blog/2020/12/18/analyzing-solorigate-the-compromised-dll-file-that-started-a-sophisticated-cyberattack-and-how-microsoft-defender-helps-protect/
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1047/T1047.md#atomic-test-7---create-a-process-using-wmi-query-and-an-encoded-command
author: Florian Roth (Nextron Systems)
date: 2021-01-20
modified: 2022-10-09
tags:
- attack.execution
- attack.t1059.001
- attack.t1047
- detection.emerging-threats
# - sunburst
logsource:
category: process_creation
product: windows
detection:
selection_cli_1:
CommandLine|contains|all:
- 'Invoke-WMIMethod win32_process -name create -argumentlist'
- 'rundll32 c:\windows'
selection_cli_2:
CommandLine|contains|all:
- 'wmic /node:'
- 'process call create "rundll32 c:\windows'
condition: 1 of selection_*
falsepositives:
- Unlikely
level: critical
Stages and Predicates
Stage 0: condition
1 of selection_*Stage 1: selection_cli_1
selection_cli_1:
CommandLine|contains|all:
- 'Invoke-WMIMethod win32_process -name create -argumentlist'
- 'rundll32 c:\windows'
Stage 2: selection_cli_2
selection_cli_2:
CommandLine|contains|all:
- 'wmic /node:'
- 'process call create "rundll32 c:\windows'
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 |
|---|---|---|
CommandLine | match |
|