Is Bitcrusher.dll safe?
Unsigned 17-year-old DLL triggers one low-trust engine and shows process-injection behaviour in sandbox.
One low-trust engine flags the file while 74 others remain silent. Sandbox evidence shows T1055 process injection, yet the file is unsigned and has circulated for 17 years with minimal detections.
8e294447f053ed7431…7ebcc06b865614Recommended next actions
Before using
Do not use it until the source and publisher can be verified independently.
If you already used it
Stop using it, scan the device, and watch for unexpected behavior or security alerts. Reinstall the parent software from the developer's official site instead of replacing this component by itself.
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.
One low-trust engine flags the file while 74 others remain silent. Sandbox evidence shows T1055 process injection, yet the file is unsigned and has circulated for 17 years with minimal detections.
The single low-trust detection and absence of tier-1 consensus normally point toward a false positive, but the observed T1055 technique in sandbox behaviour introduces a genuine risk signal. Lack of code signing and no established signer history prevent a clean classification. Long-term prevalence without widespread detections argues against active malware distribution. The combination of static, behavioural, and historical evidence leaves the sample in mixed-signals territory.
What We Detected
75 engines scanned the DLL; only Cynet returned a low-trust malicious result. No tier-1 engine flagged the sample. Sandbox execution recorded T1055 process injection alongside routine ambient activity. The file remains unsigned.
Threat Behavior
Observed T1055 indicates possible code injection into another process. no complete contacted-host reputation result was available, dropped children, or external-intel hits were recorded. The DLL carries Armadillo packing tags but shows no high-entropy packing indicators.
What To Do Now
Do not load the DLL in production environments. Keep endpoint protection enabled. If the file is required for legacy software, run it only in an isolated test system and monitor for unexpected process behaviour.
Where this verdict could be wrong1 caveat
- File is 6202 days old with common_old prevalence; a genuine malicious DLL would typically show higher detection counts or tier-1 consensus after such long exposure.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Common_old prevalence (17 years)
- No tier-1 detections
- No malicious dropped children
- Unsigned DLL
- Sandbox shows T1055 process injection
- Single low-trust engine detection
Treat the DLL as untrusted; isolate or replace it until its origin and purpose can be verified.
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
- 8MITRE ATT&CK techniques
- 2spawned processes
- 0network contacts
- 40filesystem & mutex artifacts
What this file does
Observed actions and their security significance
High concern: Injected code into another process, a technique that can conceal execution.
High concern: Used an input-capture technique that can record credentials or keystrokes.
Moderate concern: Checked the environment for virtualisation or analysis tools.
Moderate concern: Checks which security software you have installed.
Note: Collects details about your system.
Note: Loads extra code modules while running.
These are observed capabilities from an isolated analysis. A technique does not prove malicious intent on its own, and the file never ran on your device.
Attack story
Runtime observations grouped by analysis stage. Arrows organize the stages; they do not claim chronology or causality.
Input file
The submitted object
- FileObserved
Bitcrusher.dll
8e294447f053ed743106d52bdbb47ae28d64e5e28692e7a9b37ebcc06b865614
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Windows\System32\rundll32.exe" "C:\Users\<USER>\Desktop\attachment.dll",#1
02Isolated runtime analysis - ProcessObserved
Observed process
C:\Windows\SysWOW64\WerFault.exe -u -p 5388 -s 728
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
Temp
C:\ProgramData\Microsoft\Windows\WER\Temp
04Isolated runtime analysis - Written fileObserved
05d7d698-21d6-4931-89d5-77119cf8863d
C:\ProgramData\Microsoft\Windows\WER\Temp\05d7d698-21d6-4931-89d5-77119cf8863d
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
5 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.
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.
- C:\ProgramData\Microsoft\Windows\WER\Temp
- C:\ProgramData\Microsoft\Windows\WER\Temp\05d7d698-21d6-4931-89d5-77119cf8863d
- C:\ProgramData\Microsoft\Windows\WER\ReportQueue
- C:\ProgramData\Microsoft\Windows\WER\Temp\960f5c8c-c483-47dc-98f2-a032f28315e2
- C:\ProgramData\Microsoft\Windows\WER\ReportArchive
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERD10B.tmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERD496.tmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERD67C.tmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERD10B.tmp.dmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WERD496.tmp.WERInternalMetadata.xml
- Local\WERReportingForProcess5388
- Global\AmiProviderMutex_InventoryApplicationFile
- Global\32a6abcc-fbdb-4ca7-9fc6-0c3e2f168af3
- \Sessions\1\BaseNamedObjects\Local\WERReportingForProcess4548
- \Sessions\1\BaseNamedObjects\Global\fadcc7eb-8fd7-473c-ba80-82db40c57c6f
Files this sample writes at runtime
This file drops 6 children at runtime. None are currently flagged malicious in our cache.
- 382102866439452e2083…36f846Never scannednever seen before
- dded3b7c2829b1ec1b13…3ec7cbNever scannednever seen before
- 81d834111ac76a87a942…ef54c2Never scannednever seen before
- d7c5e3605ba619d67b9b…7d2bb7Never scannednever seen before
- e90f71ab8265cdada46e…f00c7eNever scannednever seen before
- e16d28c449d17cf40bd8…d4a48cNever scannednever seen before
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
- 117sources 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 a long, established submission history across 117 sources.
ProvenanceDerivedSourceSubmission historyObserved at - 04
Scanned file: Bitcrusher.dll — 8e294447f053ed743106d52bdbb47ae28d64e5e28692e7a9b37ebcc06b865614
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Windows\System32\rundll32.exe" "C:\Users\<USER>\Desktop\attachment.dll",#1
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — C:\Windows\SysWOW64\WerFault.exe -u -p 5388 -s 728
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: Temp — C:\ProgramData\Microsoft\Windows\WER\Temp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: 05d7d698-21d6-4931-89d5-77119cf8863d — C:\ProgramData\Microsoft\Windows\WER\Temp\05d7d698-21d6-4931-89d5-77119cf8863d
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\System32\rundll32.exe" "C:\Users\<USER>\Desktop\attachment.dll",#1
1 of 75 engines flagged this file
View all 75 engine results
Section entropy & packers
No high-entropy executable section or known packer signature was detected. Data and resource sections can still have high entropy without indicating packed code.
How widely this file has been seen
Widely seen in the wild for a long time. High prior this is legitimate; isolated detections on common-old files are usually false positives.
Fingerprint and provenance
- File name
- Bitcrusher.dll
- Format
- Win32 DLL
- Code signing
- No verified publisher
- Size
- 308.0 KB
- Last analyzed
- Sep 6, 2026, 7:29 PM UTC
8e294447f053ed743106d52bdbb47ae28d64e5e28692e7a9b37ebcc06b865614Safety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
We couldn't fully clear this file. Treat it with caution.
- Recovery step 01
Don't use it unless you're certain it came from a source you trust.
- Recovery step 02
Check where you got it — an unexpected attachment or a random download link is a red flag.
- Recovery step 03
Do not delete or replace the component manually. Quarantine it with your antivirus or repair the parent software from its official source. Reinstall the parent software from the developer's official site instead of replacing this component by itself.
- Recovery step 04
If you're still unsure, scan it again in a day or two — detections often catch up on newer files.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is Bitcrusher.dll safe, or is it malware?
What is Bitcrusher.dll?
How many antivirus engines detected Bitcrusher.dll?
What should I do if I already used Bitcrusher.dll?
How do I remove Bitcrusher.dll?
What is the SHA-256 hash of Bitcrusher.dll?
How up to date is this analysis of Bitcrusher.dll?
Community
Member reviews and reports for this exact file hash.