Merge pull request #2895 from SigmaHQ/aurora-false-positive-fixing

fix: removed base64 encoded param rule - too many FPs
This commit is contained in:
Florian Roth
2022-04-09 19:40:04 +02:00
committed by GitHub
@@ -1,22 +0,0 @@
title: Base64 Encoded Command Line Param Indicator
id: eee65975-bfb8-41e6-af33-18011ba24c99
status: experimental
description: Detects programs that use base64 encoded values provided via command line, which is often an indicator of obfuscation but could also be used for legitimate purposes (e.g. if certain special characters would mess with the command line interface, enccrypted keys etc.)
author: Florian Roth
date: 2022/04/05
modified: 2022/04/08
references:
- https://blog.malwarebytes.com/threat-intelligence/2022/04/new-uac-0056-activity-theres-a-go-elephant-in-the-room/d
logsource:
product: windows
category: process_creation
detection:
selection:
- CommandLine|endswith: '=='
- CommandLine|contains: '== -'
filter:
Image|endswith: '\VeeamAgent.exe'
condition: selection and not 1 of filter*
falsepositives:
- Legitimate software that uses base64 encoded values in its command line
level: medium