MSASCuiL.exe
Sources: 300M+ executions observed in the wild.
Summary
Windows Defender notification icon - displays the Windows Security shield icon in the system tray and shows protection notifications.
MSASCuiL.exe is the 477th most commonly executed Windows program in EchoTrail's dataset, observed 12,806 times across enterprise environments. It typically runs from C:\Program Files\Windows Defender and it is most often launched by explorer.exe.
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The same record for msascuil.exe, by REST or as an MCP tool. Free key, no card.
curl -H "Authorization: Bearer $ECHOTRAIL_KEY" \
https://api.echotrail.io/v1/process/msascuil.exeFree returns the summary. Team returns the full record you see on this page. Endpoint docs
Behavior
Top Paths
- C:\Program Files\Windows Defender100%
Top Hashes (SHA256)
- 16911a95dd4892db285189b6171a5ea979898550ea6da2dbdfd9a512d7d881d055.42%
- 55a81acee419a8e6a246239d277a4f11c232ec168039400bb2f783e3d4fd27a626.43%
- e522c2eb473d193d3525a393d52347b411a5540f5e8f5586fb419d0d0230be3917.59%
- 0b586ea706cf714534d8bb8188f33d6e0ac1a10b065e3d181b2cba4434b531230.33%
- 7290c4864aaa9533f9802ac3fc2811fee4d29c0d391fa9bab545f3db7add36c70.18%
- 557aea5903761c20c75f46fb245aa0a2dd40cee7cdcc39da3292d809b8e5b56b0.04%
- 1d26d3c26697c0e4832b82b66b612eb7c41a692e2dc2f651100edcec9a1511c30.01%
- ed6905f493a3276460bad9f2edb3cf91515e2fc416a74627207b541f32c9959d0.01%
Process Ancestry
Top Grandparents
- userinit.exe99.84%
- winlogon.exe0.03%
- WerFault.exe0.02%
- HxTsr.exe0.01%
- OfficeC2RClient.exe0.01%
- SenseCncProxy.exe0.01%
- update_task.exe0.01%
- wermgr.exe0.01%
Top Parents
- explorer.exe99.98%
- MSASCui.exe0.02%
Top Children
- MSASCui.exe100%
Security Analysis
What does MSASCuiL.exe normally do?
System tray icon for Windows Security. Launched at user logon.
False positive notes
Normal Windows component.
Related Processes
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This page is the Team-tier API record for MSASCuiL.exe. The free tier returns the summary, 500 lookups a month. Or ask Rocky.