PSAsyncShell - Asynchronous TCP Reverse Shell

Detects the use of PSAsyncShell an Asynchronous TCP Reverse Shell written in powershell

Sigma rule (View on GitHub)

 1title: PSAsyncShell - Asynchronous TCP Reverse Shell
 2id: afd3df04-948d-46f6-ae44-25966c44b97f
 3status: test
 4description: Detects the use of PSAsyncShell an Asynchronous TCP Reverse Shell written in powershell
 5references:
 6    - https://github.com/JoelGMSec/PSAsyncShell
 7author: Nasreddine Bencherchali (Nextron Systems)
 8date: 2022-10-04
 9tags:
10    - attack.execution
11    - attack.t1059.001
12logsource:
13    product: windows
14    category: ps_script
15    definition: 'Requirements: Script Block Logging must be enabled'
16detection:
17    selection:
18        ScriptBlockText|contains: 'PSAsyncShell'
19    condition: selection
20falsepositives:
21    - Unlikely
22level: high

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