A security package has been loaded by the Local Security Authority
A security package (SSP/AP) was loaded by LSASS.
Event ID 4622 is generated whenever a new Security Support Provider (SSP) or Authentication Package DLL is loaded into `lsass.exe`. While core packages (`Kerberos`, `NTLM`, `Schannel`, `WDigest`) load at boot, malicious actors inject custom SSP DLLs into LSASS memory to intercept and harvest plaintext credentials of every user logging onto the machine.
Failure Reason / Root Cause:
Normal operating system boot loading core providers, or attacker credential dumping via malicious SSP injection.
Raw Event XML snippet
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" />
<EventID>4622</EventID>
<Version>0</Version>
<Level>0</Level>
<Task>12544</Task>
<Opcode>0</Opcode>
<Keywords>0x8020000000000000</Keywords>
<TimeCreated SystemTime="2026-07-17T09:54:44.860Z" />
<EventRecordID>1048576</EventRecordID>
<Correlation />
<Execution ProcessID="612" ThreadID="1024" />
<Channel>Security</Channel>
<Computer>DC01.enterprise.internal</Computer>
<Security />
</System>
<EventData>
<Data Name="SubjectUserSid">S-1-5-18</Data>
<Data Name="SubjectUserName">SYSTEM</Data>
<Data Name="SubjectDomainName">NT AUTHORITY</Data>
<Data Name="SubjectLogonId">0x3e7</Data>
<!-- Event telemetry fields specific to A security package has been loaded by the Local Security Authority -->
</EventData>
</Event>MITRE ATT&CK mapping
| ID | Technique | Tactic |
|---|---|---|
T1003.005 | OS Credential Dumping: Security Support Provider | Credential Access |
T1547.005 | Boot or Logon Autostart Execution: Security Support Provider | Persistence |
Recommended actions
- Alert on any Event ID 4622 occurring post-boot or specifying non-Microsoft `Security Package Name` DLL paths.
- Inspect the registry keys under `HKLM\SYSTEM\CurrentControlSet\Control\Lsa\Security Packages`.