Is null1.wav safe?
No engine among 74 flagged this WAV audio file, although its very recent appearance and lack of runtime analysis modestly limit certainty.
All 74 antivirus engines returned no malicious or suspicious finding, including 17 tier-1 engines. The sample is a small WAV audio file with no external-intelligence matches, but it is newly observed and has no completed sandbox or contacted-host analysis.
b989e7a6643e6365cc…fe5518a25b0f5cRecommended next actions
Before viewing
View it only when its sender or download source is one you trust.
If you already viewed it
Keep normal device protection enabled and stop if the file behaves unexpectedly.
Intelligence
The saved assessment, checked against the scan evidence and recorded coverage.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
All 74 antivirus engines returned no malicious or suspicious finding, including 17 tier-1 engines. The sample is a small WAV audio file with no external-intelligence matches, but it is newly observed and has no completed sandbox or contacted-host analysis.
The strongest evidence is the complete absence of detections across 74 engines, including Avast, BitDefender, ESET, Kaspersky, and Microsoft. The reported WAV type also makes code signing inapplicable, so no inference should be drawn from its unsigned status. CIRCL, MalwareBazaar, and YARAify provided no corroborating threat match. No runtime observation was completed, and no complete contacted-host reputation result is available. Because the hash has only one submission and was first observed recently, some residual uncertainty remains despite the consistently benign static scan results.
What We Detected
No malicious or suspicious result appeared among 74 antivirus engines. Seventeen tier-1 engines, including Avast, BitDefender, ESET-NOD32, Kaspersky, and Microsoft, reported no detection. The file is identified as a 44,144-byte WAV audio file, and code signing is not applicable to this format.
Threat Behavior
No completed sandbox observation is available, so runtime behavior cannot be characterized. The contacted-host cross-check was not completed or saved, meaning no complete network-reputation conclusion can be made. CIRCL, MalwareBazaar, and YARAify returned no matching threat intelligence.
What To Do Now
The available evidence does not indicate malware. Because the file is newly observed and has little reputation history, keep endpoint protection enabled and obtain the file from a trusted source before opening it.
Where this verdict could be wrong2 caveats
- prevalence.classification=rare_new means the sample has almost no established reputation.
- behaviour=null leaves no completed runtime evidence, and contactedHosts=null means no complete host-reputation result is available.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/74 engines reported malicious or suspicious findings
- 17 tier-1 engines reported no detection
- No MalwareBazaar, CIRCL, or YARAify match
- WAV audio format with signing correctly marked inapplicable
- No brand mismatch or fired heuristic
- Newly observed hash with only one recorded submission
- No completed runtime observation
- No complete contacted-host reputation result
Keep endpoint protection enabled and open the audio only if it came from a trusted source. Re-scan later if its origin is uncertain, since the hash has very limited history.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 74 engines flagged the file.
Sandbox
PartialRuntime data is present, but no completed sandbox environment is recorded.
Network
Not runNo contacted-host reputation check is recorded.
No timestamp recordedYARA
CompleteRule evaluation completed with no recorded matches.
External intel
Complete3 of 3 independent reference sources completed.
Behavior
Plain-English impact first, then the observed runtime evidence.
Runtime behavior was not available
The report does not treat a missing runtime observation as a clean result.
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Evidence integrity
Chain of custody for the facts preserved in this report.
- 0rule hits recorded
- 0 / 74engines flagged
- 1sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
0 of 74 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
No completed runtime observation is available for this file.
ProvenanceDerivedSourceRuntime coverageObserved at - 03
The hash has been submitted 1 time from 1 source.
ProvenanceDerivedSourceSaved report factsObserved at
Detection sources at a glance
The available sources did not agree on a named threat category.
MalwareBazaar, YARAify, and CIRCL hashlookup completed and returned no entries for this hash.
YARA rules
No matchesThe rule pass completed without a saved public match.
0 of 74 engines flagged this file
View all 74 engine results
PE structure
Not applicablePE structure analysis applies to Windows executable formats, not this file type.
How widely this file has been seen
Barely seen in the wild and first surfaced recently. That limits reputation evidence, but rarity alone is not proof of malware.
Fingerprint and provenance
- File name
- null1.wav
- Format
- WAV
- Code signing
- Not applicable to this file type
- Size
- 43.1 KB
- Last analyzed
- Sep 15, 2026, 4:09 AM UTC
b989e7a6643e6365cc4c07992b2efb41938575b2f9cf24d60efe5518a25b0f5cSafety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file appears low risk based on the evidence available now.
- Recovery step 01
View it only when its sender or download source is one you trust.
- Recovery step 02
A clean result reduces known risk, but it cannot guarantee that every new or targeted threat has been detected.
- Recovery step 03
Keep your antivirus and Windows updates switched on so you stay protected.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is null1.wav safe?
What is null1.wav?
How many antivirus engines detected null1.wav?
What is the SHA-256 hash of null1.wav?
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Community
Member reviews and reports for this exact file hash.