Adversaries may abuse security support providers (SSPs) to execute DLLs when the system boots. Windows SSP DLLs are loaded into the Local Security Authority (LSA) process at system start. Once loaded into the LSA, SSP DLLs have access to encrypted and plaintext passwords that are stored in Windows, such as any logged-on user's Domain password or smart card PINs.
The SSP configuration is stored in two Registry keys: HKLM\SYSTEM\CurrentControlSet\Control\Lsa\Security Packages and HKLM\SYSTEM\CurrentControlSet\Control\Lsa\OSConfig\Security Packages. An adversary may modify these Registry keys to add new SSPs, which will be loaded the next time the system boots, or when the AddSecurityPackage Windows API function is called.[1]
| ID | Name | Description |
|---|---|---|
| S0363 | Empire |
Empire can enumerate Security Support Providers (SSPs) as well as utilize PowerSploit's |
| S0002 | Mimikatz |
The Mimikatz credential dumper contains an implementation of an SSP.[3] |
| S0194 | PowerSploit |
PowerSploit's |
| ID | Mitigation | Description |
|---|---|---|
| M1025 | Privileged Process Integrity |
Windows 8.1, Windows Server 2012 R2, and later versions may make LSA run as a Protected Process Light (PPL) by setting the Registry key |
| ID | Name | Analytic ID | Analytic Description |
|---|---|---|---|
| DET0542 | Registry and LSASS Monitoring for Security Support Provider Abuse | AN1495 |
Monitor registry modifications to |