Is libpyrowave-shared-0.dll safe?
Only Cynet flagged this DLL among 75 engines, while all 17 tier-1 engines remained silent and no independent threat intelligence identified malware.
The detection pattern strongly resembles a false positive: only 1 of 75 engines flagged the DLL, and that result came from a low-trust detector. Sandbox mappings to process injection and defense impairment warrant caution, but no malicious runtime verdict, persistence, dropped payload, named family, or independent intelligence corroborated them.
9a5641669a35ef320b…382e435cc553f9Recommended next actions
Before using
Use it only as part of software obtained from the developer's official site or another source you independently trust.
If you already used 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.
The detection pattern strongly resembles a false positive: only 1 of 75 engines flagged the DLL, and that result came from a low-trust detector. Sandbox mappings to process injection and defense impairment warrant caution, but no malicious runtime verdict, persistence, dropped payload, named family, or independent intelligence corroborated them.
Cynet produced the only detection among 75 engines, while all 17 tier-1 engines reported no detection. That low-trust-only pattern usually indicates a heuristic false positive, particularly because no engine identified a malware family. One completed sandbox run mapped activity to T1055 and T1562.001, but it issued no malicious verdict and recorded no persistence indicators, dropped hashes, or network contacts. Independent intelligence sources also returned no matching malicious record or YARA rule. The unsigned status and offensive technique mappings prevent maximum confidence, and no complete contacted-host reputation check is available.
What We Detected
Only 1 of 75 antivirus engines flagged the DLL. The sole alert came from Cynet with a generic score-based label; all 17 tier-1 engines, including BitDefender, ESET-NOD32, Kaspersky, and Fortinet, reported no detection. No named malware family was identified, and independent intelligence checks found no matching malicious record or YARA rule.
Threat Behavior
One sandbox run mapped activity to T1055 and T1562.001, associated with process injection and impairment of defenses. These mappings deserve attention, but the sandbox did not issue a malicious verdict, establish persistence, record dropped payload hashes, or observe network contacts. The DLL was loaded repeatedly through rundll32 and generated Windows Error Reporting artifacts, so some mappings may reflect test-harness execution or unstable library behavior rather than hostile intent. The file is unsigned, and no complete contacted-host reputation result is available.
What To Do Now
Use the DLL only if it came from the expected software package or a trusted developer channel. Keep endpoint protection enabled, verify the package checksum or source, and avoid loading the DLL if its origin is unknown or unrelated to installed software.
Where this verdict could be wrong3 caveats
- The sandbox mapping includes T1055 and T1562.001, which can represent process injection and impairment of defenses, although the saved evidence does not establish intent or produce a malicious sandbox verdict.
- The DLL is unsigned and peAnalysis.likelyPacked=true, reducing provenance assurance despite peAnalysis.highEntropyCode=false.
- contactedHosts=null, so no complete host-reputation result is available; however, the sandbox recorded no contacted domains, IPs, or URLs.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Only 1/75 engines flagged the file
- engines.tier1Malicious=0 and engines.tier1ReportedClean=17
- behaviour.hasMaliciousSandboxVerdict=false
- No persistence indicators or dropped file hashes were recorded
- No MalwareBazaar, CIRCL, or YARAify hit
- Unsigned Win32 DLL with no authenticated publisher
- Sandbox mapping to T1055 process injection
- Sandbox mapping to T1562.001 impairment of defenses
- peAnalysis.likelyPacked=true
- No complete contacted-host reputation result
Keep endpoint protection enabled and use the DLL only when obtained with its expected application from a trusted source. Quarantine it if the origin is unknown or its behavior differs from the intended software.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete1 of 75 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Not runNo contacted-host reputation check is recorded.
No timestamp recordedYARA
Complete1 signature or behavior rule matched.
External intel
Complete3 of 3 independent reference sources completed.
Behavior
Plain-English impact first, then the observed runtime evidence.
Runtime flight recorder
Capture complete- 1isolated sandbox run
- 12MITRE ATT&CK techniques
- 15spawned processes
- 0network contacts
- 23filesystem & mutex artifacts
What this file did when executed
This file was detonated in 1 sandbox and its runtime behaviour was observed.
Adversary techniques mapped to the MITRE ATT&CK framework.
- \REGISTRY\A\{8a181bbf-416a-3752-b7bd-fe11d3bc73fe}\Root\InventoryApplicationFile\PermissionsCheckTestKey
- C:\ProgramData\Microsoft\Windows\WER\Temp\026eab3a-70b6-472b-853c-d0d80e955748
- C:\ProgramData\Microsoft\Windows\WER\Temp\095ddf79-d538-4d7a-acdd-4499631976f2
- C:\ProgramData\Microsoft\Windows\WER\Temp\264b0772-9056-43b6-9c82-c25df3fc2cf6
- C:\ProgramData\Microsoft\Windows\WER\Temp\454b66a9-4ec1-44c0-ac8a-8eb994bb355a
- C:\ProgramData\Microsoft\Windows\WER\Temp\4fb235a7-aab8-4100-a2fb-a888e6bd5db9
- \Sessions\1\BaseNamedObjects\Local\WERReportingForProcess6836
- \Sessions\1\BaseNamedObjects\InventorySynchronizationInventoryApplicationFileMutex6292
- \Sessions\1\BaseNamedObjects\Local\WERReportingForProcess1620
- \Sessions\1\BaseNamedObjects\InventorySynchronizationInventoryApplicationFileMutex6668
- \Sessions\1\BaseNamedObjects\Local\WERReportingForProcess6888
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Evidence integrity
Chain of custody for the facts preserved in this report.
- 1rule hit recorded
- 1 / 75engines flagged
- 61sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
1 high-confidence signature or behavior rule matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 02
1 of 75 antivirus engines flagged the file, including Cynet.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 03
The hash has been submitted 65 times from 61 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: libpyrowave-shared-0.dll — 9a5641669a35ef320bc8c8c59ef44ed6f57d783d5f64dd4bf3382e435cc553f9
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Windows\sysnative\rundll32.exe" "C:\Users\<USER>\Desktop\attachment.dll",#1
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — C:\Windows\System32\loaddll64.exe loaddll64.exe "C:\Users\user\Desktop\readme.dll"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: 026eab3a-70b6-472b-853c-d0d80e955748 — C:\ProgramData\Microsoft\Windows\WER\Temp\026eab3a-70b6-472b-853c-d0d80e955748
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: 095ddf79-d538-4d7a-acdd-4499631976f2 — C:\ProgramData\Microsoft\Windows\WER\Temp\095ddf79-d538-4d7a-acdd-4499631976f2
ProvenanceObservedSourceIsolated runtime analysisObserved 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.
Signatures and behavior heuristics
A community signature or high-severity behavioral heuristic matched. Signatures identify known patterns; heuristics are strong leads but are not proof on their own.
The saved runtime evidence maps this activity to MITRE T1055 (Process Injection). The mapping supports possible process injection, but it does not prove the exact injection method or the operator's intent.
Evidence"C:\Windows\sysnative\rundll32.exe" "C:\Users\<USER>\Desktop\attachment.dll",#1
1 of 75 engines flagged this file
View all 75 engine results
Section entropy & packers
A known packer signature (UPX / Themida / VMProtect / etc.) matched this file. Packers aren't malicious on their own, but most malware uses them.
Packers compress or encrypt the executable and only unpack it at runtime. Legitimate commercial software uses them too — but if the file is also unsigned and rare, it's a strong malware signal.
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- libpyrowave-shared-0.dll
- Format
- Win32 DLL
- Code signing
- No verified publisher
- Size
- 2.2 MB
- Last analyzed
- Sep 24, 2026, 7:18 PM UTC
9a5641669a35ef320bc8c8c59ef44ed6f57d783d5f64dd4bf3382e435cc553f9Safety & 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
Use it only as part of software obtained 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 libpyrowave-shared-0.dll safe?
What is libpyrowave-shared-0.dll?
How many antivirus engines detected libpyrowave-shared-0.dll?
What is the SHA-256 hash of libpyrowave-shared-0.dll?
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Community
Member reviews and reports for this exact file hash.