Suspicious Capture Credentials with Rpcping.exe (via process_creation)

title: Suspicious Capture Credentials with Rpcping.exe (via process_creation)
id: 50690ef4-fb12-5275-a23b-dceca18216e5
status: stable
description: This rule detects using Rpcping.exe to send a RPC test connection to the target server (-s) and force the NTLM hash to be sent in the process.
references:
    - https://attack.mitre.org/techniques/T1003/
    - https://lolbas-project.github.io/lolbas/Binaries/Rpcping/
    - https://twitter.com/vysecurity/status/974806438316072960
    - https://twitter.com/vysecurity/status/873181705024266241
    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/hh875578(v=ws.11)
author: Huntrule Team
date: 2026-01-21
tags:
    - attack.credential-access
    - attack.t1003
logsource:
    category: process_creation
    product: windows
detection:
    selection_main_img:
        - Image|endswith: '\RpcPing.exe'
        - OriginalFileName: '\RpcPing.exe'
    selection_main_flag:
        CommandLine|contains|windash: '-s'
    selection_cli_ntlm:
        CommandLine|contains|windash: '-u'
        CommandLine|contains: 'NTLM'
    selection_cli_ncacn:
        CommandLine|contains|windash: '-t'
        CommandLine|contains: 'ncacn_np'
    condition: all of selection_main_* and 1 of selection_cli_*
falsepositives:
    - Unknown
level: medium