Nasreddine Bencherchali
29 lines
847 B
YAML
29 lines
847 B
YAML
title: Suspicious Calculator Usage
|
|
id: 737e618a-a410-49b5-bec3-9e55ff7fbc15
|
|
status: test
|
|
description: Detects suspicious use of 'calc.exe' with command line parameters or in a suspicious directory, which is likely caused by some PoC or detection evasion
|
|
author: Florian Roth
|
|
references:
|
|
- https://twitter.com/ItsReallyNick/status/1094080242686312448
|
|
date: 2019/02/09
|
|
modified: 2022/08/04
|
|
logsource:
|
|
category: process_creation
|
|
product: windows
|
|
detection:
|
|
selection:
|
|
- CommandLine|contains: '\calc.exe '
|
|
- Image|endswith: '\calc.exe'
|
|
filter:
|
|
Image|startswith:
|
|
- 'C:\Windows\System32\'
|
|
- 'C:\Windows\SysWOW64\'
|
|
- 'C:\Windows\WinSxS\'
|
|
condition: selection and not filter
|
|
falsepositives:
|
|
- Unknown
|
|
level: high
|
|
tags:
|
|
- attack.defense_evasion
|
|
- attack.t1036
|