#RunOnce
Normally, they are just RunOnce scripts that get added to the registry by updates and other software. This same mechanism can be used nefariously.
January 13, 2025 at 1:08 AM
@weathernetwork.bsky.social ... yes we know we're using an adblocker. No we're not disabling our adblocker. Please set your pop up banner to runonce. Because it's annoying and we want it gone. We will support the Weather Network in other ways.

Thank you. #OnPoli #CanPoli #Weather
February 12, 2025 at 6:46 PM
Accidentally came across a sample that's got a Windows Sandbox check, TIL WSB turns off the PasswordExpires flag on RunOnce and other WSB named devices exist to facilitate the operation of the sandbox.

github.com/LloydLabs/ws...
January 14, 2025 at 12:12 PM
How do I force RunOnce commands to run in a specific order?
devblogs.microsoft.com/oldnewthing/...
How do I force RunOnce commands to run in a specific order? - The Old New Thing
Run them in the desired order yourself.
devblogs.microsoft.com
May 17, 2025 at 9:49 PM
« Green Fields »(« Once, There Was… ») performed by the Brothers Four.
Enjoy, have a nice weekend everyone!
youtu.be/46o1joHp7t0?...
Green Fields - Brothers Four (CD Quality)
Once there were green fields kissed by the sunOnce there were valleys where rivers used to runOnce there were blue skies with white clouds high aboveOnce the...
youtu.be
March 1, 2024 at 1:02 PM
The script is similar to Gamaredon VBScripts we analyzed before. It removes all registry values under well-known Run/RunOnce keys + several legitimate keys commonly abused by Gamaredon. It also deletes all scheduled tasks and terminates PowerShell, VBScript, and Mshta processes. 2/4
December 5, 2025 at 8:49 AM
I'd suggest a combo of policies that prevent office apps and edge from running side procs or creating objects, via intune & Defender settings. bit more work but more effective than targeting a registry. You can still target that reg but then what about runonce? Or faststart? Turns into wackamole
December 9, 2024 at 6:17 PM
mild to big changes for addon API in 12.1.0 #⛏️
June 19, 2026 at 12:16 AM
~Malpedia~
Babylon RAT steals credentials, logs keystrokes, executes commands, persists via RunOnce, and communicates with C2.
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IOCs: gsx[.]uk[.]com, 2f61950c3baa58573fac514205cead5afd6e27e84bb2b91b233a9f045d9b3f4c
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#Malware #RAT #ThreatIntel
Babylon RAT Analysis
malpedia.caad.fkie.fraunhofer.de
September 14, 2026 at 12:37 PM
runOnce is normal function ...it was just for comparison POV
November 21, 2024 at 5:28 AM
CRAN updates: bipartite ipeaplot runonce #rstats
October 7, 2025 at 1:02 PM
CRAN updates: jskm nhstplot REddyProc runonce #rstats
July 30, 2025 at 9:02 AM
How do I force RunOnce commands to run in a specific order?

https://devblogs.microsoft.com/oldnewthing/20250515-00/?p=111181
How do I force RunOnce commands to run in a specific order? - The Old New Thing
Run them in the desired order yourself.
devblogs.microsoft.com
May 16, 2025 at 2:00 PM
Microsoft’s Photo ZIP campaign is the sector lure to watch: hospitality orgs in Europe/Asia, fake image LNKs, obfuscated PowerShell, Node.js implant, Run/RunOnce persistence. Hunt behavior, not just domains.
June 26, 2026 at 1:38 PM
Show HN: RunOnce – Run one-off LLM scripts from Windows context menu Article URL: https://apps.microsoft.com/detail/9nx07brmkgh2?hl=en-US&gl=US Comments URL: https://news.ycombinator.com/item...

Origin | Interest | Match
RunOnce - Free download and install on Windows | Microsoft Store
Right-click the folder background to instantly run LLM-generated one-time scripts. RunOnce registers a "Run Code Here" entry directly into the Windows 11 File Explorer context menu. Open any folder, right-click on the empty background, and your script runs immediately. Key Features: • Registered to Windows 11 right-click context menu • Simple built-in editor with syntax highlighting • Automatic language detection and executor invocation Supported languages: • Batch (.bat) • PowerShell (.ps1) • Python (.py) • Lua (.lua) • Nim (.nim) • Go (.go) Note: • RunOnce is designed for LLM-generated one-time scripts, typically ranging from dozens to a few hundred lines of code • The corresponding runtime environment must be installed on your device Open source under GPL-3.0: https://github.com/Water-Run/RunOnce
apps.microsoft.com
March 20, 2026 at 7:02 AM
Updates on CRAN: bipartite (2.23), deaR (1.5.1), eyeris (3.0.1), gam.hp (0.0-4), ipeaplot (0.5.0), modsem (1.0.13), otelsdk (0.2.2), runonce (0.3.3), timeplyr (1.1.1)
October 7, 2025 at 1:33 PM
Updates on CRAN: adas.utils (1.2.1), arakno (1.3.1), BayesTools (0.2.20), jskm (0.5.14), KinMixLite (2.2.1), marmap (1.0.12), nhstplot (1.4.0), OBIC (4.0.0), PAGE (0.3.0), plotthis (0.7.3), REddyProc (1.3.4), runonce (0.3.2), sjmisc (2.8.11), worldmet (0.10.0)
July 30, 2025 at 1:36 PM
I just learned from @cr00ster that a * in a RunOnce key means that it should start in safe mode. From MS: "The value name of RunOnce keys can be prefixed with an asterisk (*) to force the program to run even in Safe mode."...
November 25, 2024 at 2:18 AM
My sensors went bonkers because of a bunch of very suspicious activity happening in /CurrentVersion/RunOnce, which is a way hide malware activity (T1565.001 and T1112). I found the culprit... OneDrive. There goes a nice peaceful Saturday morning. @GossiTheDog is this normal?
November 20, 2024 at 11:44 PM
Feed: "The Old New Thing"
By: Raymond Chen on Thursday, May 15, 2025
How do I force RunOnce commands to run in a specific order?
Run them in the desired order yourself.
devblogs.microsoft.com
May 16, 2025 at 7:35 AM
CSSのスクロール駆動アニメーションを1回だけ実行し、終了フレームに留まらせる実装方法 -runOnce
<a href="https://coliss.com/articles/build-websites/operation/work/scroll-driven-animation-only-once.html" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky">coliss.com/articles...
CSSのスクロール駆動アニメーションを1回だけ実行し、終了フレームに留まらせる実装方法 -runOnce
スクロール駆動アニメーションは、ビジターがスクロールするとそれに連動して要素がアニメーションします。スクロールに連動するということは、上下に繰り返しスクロールするとアニメーションも繰り返し実行されてし
coliss.com
October 17, 2023 at 6:05 AM