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Adversaries may register malicious network provider dynamic link libraries (DLLs) to capture cleartext user credentials during the authentication process.
Passed 18 of 22 test cases with the skill, and 15 of 22 without it.
and 2 more in the full report
3 fixed15 passed either way4 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
Our enterprise deployment team is hardening Windows 11 22H2 endpoints and wants to block Winlogon from broadcasting user credentials to network provider DLLs. What Group Policy setting name was introduced in Windows 11 22H2 to disable these MPR notifications?
| Checked | Without skill | With skill |
|---|---|---|
| Identifies EnableMPRNotifications as the policy setting name used to disable MPR notifications. | Missed | Passed |
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Sub-technique of: T1556
Adversaries may register malicious network provider dynamic link libraries (DLLs) to capture cleartext user credentials during the authentication process. Network provider DLLs allow Windows to interface with specific network protocols and can also support add-on credential management functions. During the logon process, Winlogon (the interactive logon module) sends credentials to the local mpnotify.exe process via RPC. The mpnotify.exe process then shares the credentials in cleartext with registered credential managers when notifying that a logon event is happening.
Adversaries can configure a malicious network provider DLL to receive credentials from mpnotify.exe. Once installed as a credential manager (via the Registry), a malicious DLL can receive and save credentials each time a user logs onto a Windows workstation or domain via the NPLogonNotify() function.
Adversaries may target planting malicious network provider DLLs on systems known to have increased logon activity and/or administrator logon activity, such as servers and domain controllers.
Platforms: Windows
Identify Attack Surface: Determine if the target environment is susceptible to Network Provider DLL by examining the target platforms (Windows).
Assess Existing Defenses: Review whether mitigations for T1556.008 are in place. If defenses are absent or misconfigured, this technique may be exploitable.
Execute Test: Use tools and methods described in the MITRE ATT&CK page and external references below.
Note: No Atomic Red Team tests available for this technique. See Atomic Red Team GitHub for updates.
test cases passed, vs 15 / 22 without
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