File scan report
Verdict Safe
Is Not
None of the 67 antivirus engines that checked it flagged this archive, which holds the Sysinternals NotMyFault crash-test utility and its driver, and three sandbox runs recorded…
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Moderate evidence · No engine flags it, but no publisher signature confirms who made it.
Keep the archive if you need a crash-dump test tool, but run it only inside a virtual machine or a disposable test system, since it is designed to blue-screen Windows. Your antivirus needs no changes and should stay enabled.
Good practice2 tips
We found nothing harmful in this file.
Open it only if you trust the person or website you got it from.
Keep your security software and system updates switched on.
No scanner can promise a file is 100% safe.
Antivirus results
0 of 67 flagged
- Flagged 0
- No detection 67
- No result 8
- Code signing Not applicable
- Test run Completed
- First seen 6mo ago
Chapter 02
Why we think so
0 points against it and 4 in its favour, checked against the scan evidence.
The reasoning behind this verdict
This ZIP contains the NotMyFault crash-test utility, its 64-bit and console variants, and the myfault driver it loads. None of the 67 antivirus engines that checked it flagged it and three sandbox runs finished without hostile behaviour, matching what the tool declares itself to be. It is a legitimate testing tool, but it is built to crash Windows on purpose.
The archive produced no detections at all: none of the 67 antivirus engines that checked it, including 18 high-reputation ones such as BitDefender, Kaspersky, ESET-NOD32 and Fortinet, reported anything, and no engine in the lower tiers added a generic or rule-based flag. The sandbox runs agree — the combined result across the three runs was clean, with no malicious verdict, no injection into other processes, and no network destinations attributed to the sample. What the runs did record is entirely consistent with the utility it claims to be: it unpacked notmyfault.exe and its variants, wrote myfault.sys, and set a EULA-accepted setting under the Sysinternals NotMyFault registry key. Reference databases and community rule sets returned nothing, and the file has been circulating widely since first seen on May 7, 2026, with 71 distinct submitters. The only behavioural mapping of note concerns defence tampering without any corresponding artefact, which is a routine sandbox label and not evidence of anything. The single practical caution is operational rather than malicious: this tool deliberately triggers a system crash.
What We Detected
Nothing. None of the 67 antivirus engines that checked it flagged this archive or any of its contents, and the file has no suspicious rule labels either. The archive unpacks to the NotMyFault utility: a main executable, 64-bit and console builds, a EULA text file, and the myfault driver it installs. The tool sets a single user-level setting recording that its licence has been accepted.
Threat Behavior
Three sandbox runs were completed and their combined result was clean. A single defence-tampering mapping appeared without any matching artefact, which is a common label on ordinary installers and test utilities and carries no weight here. Malware and known-software reference databases returned nothing for this file.
What To Do Now
This is a legitimate crash-testing tool used to produce memory dumps and blue screens on purpose, so treat it accordingly: run it only on a virtual machine or a disposable test system you are willing to reboot, and never on a work or production computer. Keep your antivirus and other protection enabled; nothing here requires you to switch anything off. Because the file arrived inside an archive, open it from a location you control and check that you obtained it from the official source before running the driver.
Where this verdict could be wrong3 caveats
- The archive carries a kernel-mode driver and several variants of a tool designed to deliberately crash Windows; on any machine you rely on, running it will cause a genuine blue screen and reboot, even though nothing in the file is malicious.
- Three sandbox runs ended without hostile behaviour, but the contacted-host reputation check was not saved, so the one address seen in the sandbox could not be cross-referenced; it is listed as analysis-machine background traffic rather than the sample's own contact.
- No engine flagged the archive, but the executable and driver inside it were never re-scanned individually by us, so each packed file rests on the archive-level scan and the sandbox runs.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- None of the 67 antivirus engines that checked it flagged the archive, including 18 of the highest-reputation ones
- Three sandbox runs finished with a clean combined result, no injection into other processes and no persistence
- The files written and the settings changed match exactly what the named NotMyFault crash-test utility does
- Widely shared: 71 distinct submitters since first seen on May 7, 2026, and no malicious or unwanted-software reference entries
6 sources checked · 5 complete · 1 not needed or not applicable. See every source
Chapter 03
What it did in our test
It ran in 3 isolated tests; no test environment rated what it did as risky.
Test run summary
Capture complete- 3isolated sandbox runs
- 4sandbox rule tags
- 4spawned processes
- 0network contacts
- 12filesystem & mutex artifacts
Includes the sandbox verdicts, 4 mapped techniques, every process, file, registry and network entry and 8 dropped files.
Show the technical evidenceChapter 04
Technical details
None of the 67 antivirus engines that checked it flag it.
Sources checked
Every check behind this verdict
6 sources checked · 5 complete · 1 not needed or not applicable. Complete means the check returned a usable result; it does not mean the file is safe.
File fingerprint
- Last analyzed
- Nov 6, 2026, 11:55 PM UTC
- SHA-256
b175534279f4c75ec0546e787599c94090cfc9be4fcdc43aa5d24ec744b99ebd- SHA-1
42d84361d47c9ed98ee0b9979f3ce59af632bfcd- MD5
a30466e113421d905b2a9d356cb0ad9d
About this file
NotMyFault.zip is a ZIP file of 1.5 MB.
- Type and size
- ZIP · 1.5 MB
- Signer
- Not applicable
- First seen
- May 7, 2026On VirusTotal.
- Submitted by
- 71 distinct sources
First scanned
Includes every engine result (75) and how widely the file has been seen.
Show the technical evidenceChapter 05
Questions & answers
Short answers to the 6 questions people ask most about this file.
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Community
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