Detection rules › Sigma
HackTool - Covenant PowerShell Launcher
Detects suspicious command lines used in Covenant luanchers
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | |
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: HackTool - Covenant PowerShell Launcher
id: c260b6db-48ba-4b4a-a76f-2f67644e99d2
status: test
description: Detects suspicious command lines used in Covenant luanchers
references:
- https://posts.specterops.io/covenant-v0-5-eee0507b85ba
author: Florian Roth (Nextron Systems), Jonhnathan Ribeiro, oscd.community
date: 2020-06-04
modified: 2023-02-21
tags:
- attack.execution
- attack.stealth
- attack.t1059.001
- attack.t1564.003
logsource:
category: process_creation
product: windows
detection:
selection_1:
CommandLine|contains|all:
- '-Sta'
- '-Nop'
- '-Window'
- 'Hidden'
CommandLine|contains:
- '-Command'
- '-EncodedCommand'
selection_2:
CommandLine|contains:
- 'sv o (New-Object IO.MemorySteam);sv d '
- 'mshta file.hta'
- 'GruntHTTP'
- '-EncodedCommand cwB2ACAAbwAgA'
condition: 1 of selection_*
level: high
Stages and Predicates
Stage 0: condition
1 of selection_*Stage 1: selection_1
selection_1:
CommandLine|contains|all:
- '-Sta'
- '-Nop'
- '-Window'
- 'Hidden'
CommandLine|contains:
- '-Command'
- '-EncodedCommand'
Stage 2: selection_2
selection_2:
CommandLine|contains:
- 'sv o (New-Object IO.MemorySteam);sv d '
- 'mshta file.hta'
- 'GruntHTTP'
- '-EncodedCommand cwB2ACAAbwAgA'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |