Is index.js.before-key-menu-20260919-182901.bak safe?
None of 74 antivirus engines detected this JavaScript backup, although its limited history and absence of runtime analysis leave some residual uncertainty.
Static scanning found no detection from 74 antivirus engines, including 17 reporting tier-1 engines, and external intelligence produced no matching threat indicators. However, the file is newly observed with only one submission, and no completed sandbox or host-reputation assessment is available.
da752b55bda8a9986a…3b6ebd4b4540e3Recommended next actions
Before running
Run it only when it came from the developer's official site or another source you independently trust.
If you already ran 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.
Static scanning found no detection from 74 antivirus engines, including 17 reporting tier-1 engines, and external intelligence produced no matching threat indicators. However, the file is newly observed with only one submission, and no completed sandbox or host-reputation assessment is available.
The strongest evidence is the complete absence of malicious or suspicious detections across 74 antivirus engines. Seventeen tier-1 engines reported no detection, and no engine supplied a malware family label. MalwareBazaar, CIRCL, and YARAify also returned no matching intelligence. Code signing is not meaningful for this JavaScript backup, so the absence of a signature does not count against it. Confidence is moderated because the sample has only one submission, no comparable historical samples, and no completed runtime observation. No complete contacted-host reputation result is available.
What We Detected
None of 74 antivirus engines flagged the file as malicious or suspicious. The reporting set included 17 tier-1 engines with no detection, including BitDefender, ESET-NOD32, Kaspersky, and Microsoft. MalwareBazaar, CIRCL, and YARAify supplied no corroborating threat indicators or matching YARA rules.
Threat Behavior
No completed sandbox observation is available, so the script's behavior during execution cannot be described. Likewise, contacted-host reputation was not checked or saved, preventing conclusions about any domains, URLs, or IP addresses the script might contact. The file is newly observed and has only one recorded submission, which limits historical confidence.
What To Do Now
If the file came from an expected project backup or trusted development environment, the available static evidence supports normal handling. If its origin is uncertain, inspect the JavaScript before execution and run it only in an isolated test environment while keeping endpoint protection enabled.
Where this verdict could be wrong2 caveats
- prevalence.classification=rare_new: the file is newly observed and has only one submission, so its clean static results have limited historical support.
- No sandbox run was completed, and contactedHosts=null means there is no complete reputation assessment for any potential runtime contacts.
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
- engines.tier1ReportedClean=17 and engines.tier1Malicious=0
- externalIntel.malwareBazaar.hit=false
- externalIntel.circl.hit=false and externalIntel.yaraify.ruleCount=0
- No brand mismatch or triggered heuristic was recorded
- prevalence.classification=rare_new with only 1 source and 1 submission
- behaviour=null, so no runtime behavior was observed
- contactedHosts=null, so no complete host-reputation result is available
- similarHashes contains no comparable historical verdicts
Keep endpoint protection enabled and retain the file only if its project origin is expected. For an unknown source, review the script or execute it in an isolated environment before trusting it.
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
- index.js.before-key-menu-20260919-182901.bak
- Format
- JavaScript
- Code signing
- Not applicable to this file type
- Size
- 336.8 KB
- Last analyzed
- Sep 26, 2026, 1:53 PM UTC
da752b55bda8a9986a11b9595c6c614f949108a5899d7316773b6ebd4b4540e3Safety & 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
Run it only when it came from the developer's official site or another source you independently 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 index.js.before-key-menu-20260919-182901.bak safe?
What is index.js.before-key-menu-20260919-182901.bak?
How many antivirus engines detected index.js.before-key-menu-20260919-182901.bak?
What is the SHA-256 hash of index.js.before-key-menu-20260919-182901.bak?
Is it safe to run index.js.before-key-menu-20260919-182901.bak?
How up to date is this analysis of index.js.before-key-menu-20260919-182901.bak?
Community
Member reviews and reports for this exact file hash.