.. /cmdl32.exe
Star

Microsoft Connection Manager Auto-Download

Paths:

C:\Windows\System32\cmdl32.exe
C:\Windows\SysWOW64\cmdl32.exe

Resources:

Acknowledgements:

Elliot Killick (@elliotkillick)

Detection:

Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/process_creation/proc_creation_win_lolbin_cmdl32.yml
IOC: Reports of downloading from suspicious URLs in %TMP%\config.log
IOC: Useragent Microsoft(R) Connection Manager Vpn File Update

Download

Download a file from the web address specified in the configuration file. The downloaded file will be in %TMP% under the name VPNXXXX.tmp where "X" denotes a random number or letter.
```
cmdl32 /vpn /lan %cd%\config
```
Use case
Download file from Internet

Privileges required
User

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

ATT&CK® technique
T1105