runonce.exe
Summary
Windows RunOnce processor - executes commands registered in the RunOnce registry key and removes them after execution.
runonce.exe is the 363rd most commonly executed Windows program in EchoTrail's dataset, observed 23,558 times across enterprise environments. It typically runs from C:\Windows\SysWOW64 and it is most often launched by explorer.exe.
Behavior
Top Paths
- C:\Windows\SysWOW6497.04%
- C:\Windows\System322.96%
- C:\Windows\winsxs\x86_microsoft-windows-runonce_31bf3856ad364e35_6.1.7601.17514_none_17c23e881d4a0b0b0.01%
Top Hashes (SHA256)
- 4e99208b00827b31e804962322d0a748d3344ee4b38cb54d77e4b055c5b43d5029.47%
- 0d8d6e7e3a18a473bcdfc13accd03969dad85e601a2aaab29d54c6c46c1f01e814.16%
- 645ac8acfe1973925e3bf1edaeaaf139b8b4da54ff6ca8b5f42e9ebc6940faa910.25%
- f993010a5f947f454f61800a6a120417c9aca4a3bc9f7ed82b614e19f45bbee68.04%
- d4f991adfdd1949ae08a106dad8a7899fef0bf5e691ac74099137fc5ffd9386f5.72%
- 78b8d920926ebcc685865a5ac91f21ed40889d538dde6a4092764f44d7c015f45.71%
- 0babaeacf9d0aa4e6fbea6943b9916425746fb702b6501c47f4470fd195836af5.3%
- 4dbc301ea051ecdea35d26f7666ace0109cd8d1027c5361ec37e82623c0b5db45.29%
- c6721f830675adc7e7fde2b5e822e56f6a063146f5066f1e25ebfe86f0a871362.87%
- 4dfe3a43c478d2ebf74acbae1aba2bc8fc1566359689349161f73a1c39c5fc132.37%
Process Ancestry
Top Grandparents
- userinit.exe98.48%
- msiexec.exe0.59%
- explorer.exe0.24%
- rdpinit.exe0.13%
- cmd.exe0.06%
- setup.exe0.05%
- python.exe0.03%
- winlogon.exe0.03%
Top Parents
- explorer.exe98.6%
- runonce.exe0.29%
- rundll32.exe0.25%
- PrintInf64.exe0.2%
- usbinst.exe0.17%
- PanGPS.exe0.09%
- rdpshell.exe0.08%
- msiexec.exe0.06%
- Dropbox.exe0.05%
- VACon64.exe0.05%
Top Children
- jusched.exe8.64%
- KeePass.exe7.75%
- acrotray.exe5.61%
- PIconStartup.exe3.81%
- DialIEHelper.exe3.52%
- openvpn-gui.exe3.41%
- sbamtray.exe3.08%
- Dropbox.exe3.07%
- cnmnsst.exe3.04%
- cnmnsst2.exe2.75%
Rare or environment-specific process names are omitted from ancestry tables. Percentages are of all observed relationships.
Ask Rocky about runonce.exe
Rocky answers questions about runonce.exe grounded in this same dataset — free, no account needed.
Need this data programmatically? The Rocky API includes 500 free lookups a month. Or just ask Rocky.
Data from EchoTrail's dataset of ~346M Windows process executions. Last extracted 2026-08-04.