.. /Wlrmdr.exe
Star

Windows Logon Reminder executable

Paths:

c:\windows\system32\wlrmdr.exe

Resources:

Acknowledgements:

Grzegorz Tworek (@0gtweet)
Oddvar Moe (@Oddvarmoe)
Freddy (@falsneg)

Detection:

Sigma: https://github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/process_creation/proc_creation_win_lolbin_wlrmdr.yml
IOC: wlrmdr.exe spawning any new processes

Execute

Execute calc.exe with wlrmdr.exe as parent process
```
wlrmdr.exe -s 3600 -f 0 -t _ -m _ -a 11 -u calc.exe
```
Use case
Use wlrmdr as a proxy binary to evade defensive countermeasures

Privileges required
User

Operating systems
Windows 10, Windows 11

ATT&CK® technique
T1202