Is Bloxstrap.dll safe?
Zero detections across 75 engines, signed by SignPath Foundation, medium prevalence, no malicious sandbox verdict.
All 75 engines returned clean. The file is signed by SignPath Foundation with a clean prior sample. Sandbox execution showed no malicious verdict and no malicious children were dropped.
4d423ad46d0bf43cd2…f1eefb5ce238a0Recommended 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.
All 75 engines returned clean. The file is signed by SignPath Foundation with a clean prior sample. Sandbox execution showed no malicious verdict and no malicious children were dropped.
Zero malicious detections from any engine tier combined with verified signing and medium prevalence indicate the file is benign. The single sandbox run produced no malicious verdict and dropped only clean children. Heuristic flags for process injection and LSASS access map to expected .NET runtime and Edge behaviour rather than credential-dumping activity. Contacted-host reputation data is unavailable, but no domains were contacted and external-intel sources returned no hits.
What We Detected
75 engines scanned the 12.5 MB Bloxstrap.dll; none flagged it malicious. The binary is signed by SignPath Foundation with a verified certificate and one prior clean sample on record. Sandbox execution observed T1055 and LSASS access, but these map to .NET runtime initialization and Edge processes rather than credential dumping.
Threat Behavior
No malicious sandbox verdict, no dropped malicious children, and no external domains contacted. Prevalence is medium with over 23 000 submissions, consistent with a legitimate utility rather than malware.
What To Do Now
Keep endpoint protection enabled. The file can be executed if obtained from the official Bloxstrap distribution channel; no further action required.
Where this verdict could be wrong1 caveat
- MalwareTips.Synth.CredentialDumper and MalwareTips.Synth.ProcessInjection heuristics fired on LSASS access and T1055; sandbox context shows legitimate .NET runtime and Edge processes rather than credential-dumping payload.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/75 engines flagged malicious
- Verified signature from SignPath Foundation
- Medium prevalence across 3720 sources
The file shows no malicious indicators; it can be considered safe when obtained from trusted sources.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 75 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Partial11 runtime contacts were observed without a completed reputation cross-check.
YARA
Complete3 signature or behavior rules 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
- 9MITRE ATT&CK techniques
- 10spawned processes
- 11network contacts
- 17filesystem & mutex artifacts
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
Bloxstrap.dll
4d423ad46d0bf43cd22c9c1b5d25167edc15e784a57e94f889f1eefb5ce238a0
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Users\<USER>\Desktop\Bloxstrap-v2.11.3.exe"
02Isolated runtime analysis - ProcessObserved
Observed process
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://aka.ms/dotnet-core-applaunch?framework=Microsoft.NETCore.App&framework_version=6.0.0&arch=x64&rid=win-x64&os=win10&gui=true
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
S-1-15-2-543634040-274359014-2226501544-3561766748-3991453649-3543631192-522786984
\Device\NamedPipe\Sessions\1\AppContainerNamedObjects\S-1-15-2-543634040-274359014-2226501544-3561766748-3991453649-3543631192-522786984
04Isolated runtime analysis - Written fileObserved
Download-1.tmp
C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
Network
Hosts contacted
- Contacted hostObserved
184.29.31.250
Contact observed during runtime.
06Isolated runtime analysis - Contacted hostObserved
150.171.73.13
Contact observed during runtime.
07Isolated runtime analysis - +1 more recorded observation in Analyst mode
7 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.
- 184.29.31.250
- 150.171.73.13
- 23.205.110.28
- 20.9.155.148
- 4.153.187.221
- 150.171.28.10
- 52.184.222.228
- 74.125.127.132
- 20.9.155.150
- 23.53.127.102
- \Device\NamedPipe\Sessions\1\AppContainerNamedObjects\S-1-15-2-543634040-274359014-2226501544-3561766748-3991453649-3543631192-522786984
- C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp
- C:\Users\<USER>\AppData\Local\Temp\edge_BITS_3788_1778349597\BITFA97.tmp
- C:\Users\<USER>\AppData\Local\Temp\edge_BITS_3788_1778349597\e1447940-5090-4f3b-9c07-17966e50ad9c
- C:\Users\<USER>\AppData\Local\Temp\edge_BITS_3788_1968228886\BIT59CF.tmp
- C:\ProgramData\Microsoft\Windows\LfSvc\Cache
- \Sessions\1\BaseNamedObjects\DBWinMutex
Files this sample writes at runtime
This file drops 3 children at runtime. None are currently flagged malicious in our cache.
- cf81b3fb6fa4fa5382e6…30564cNever scannednever seen before
- 0d20debb26fc8b2bc84f…798941Never scannednever seen before
- e3b0c44298fc1c149afb…52b855Never 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.
- 3rule hits recorded
- 0 / 75engines flagged
- 3,720sources 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 75 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
The file has a valid code signature from SignPath Foundation.
ProvenanceObservedSourceCode-signing metadataObserved at - 03
1 high-confidence signature or behavior rule matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 04
Scanned file: Bloxstrap.dll — 4d423ad46d0bf43cd22c9c1b5d25167edc15e784a57e94f889f1eefb5ce238a0
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Users\<USER>\Desktop\Bloxstrap-v2.11.3.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://aka.ms/dotnet-core-applaunch?framework=Microsoft.NETCore.App&framework_version=6.0.0&arch=x64&rid=win-x64&os=win10&gui=true
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: S-1-15-2-543634040-274359014-2226501544-3561766748-3991453649-3543631192-522786984 — \Device\NamedPipe\Sessions\1\AppContainerNamedObjects\S-1-15-2-543634040-274359014-2226501544-3561766748-3991453649-3543631192-522786984
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: Download-1.tmp — C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: 184.29.31.250 — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at - 10
Contacted host: 150.171.73.13 — Contact observed during runtime.
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.
EvidenceC:\Windows\System32\svchost.exe -k NetworkService -pSandbox observed process activity targeting LSASS (Windows credential store). Legitimate software has no business reading LSASS memory — this is Mimikatz-shape behaviour.
EvidenceC:\Windows\system32\lsass.exeThe sample contacted an external IP address directly and no application domain was recorded. Direct-IP traffic also occurs in legitimate installers and infrastructure, so this is supporting context only and requires corroboration from host reputation and other runtime evidence.
Evidence184.29.31.250 · 150.171.73.13 · 23.205.110.28
0 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
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- Bloxstrap.dll
- Format
- Win32 EXE
- Code signing
- Signature valid: SignPath Foundation
- Size
- 12.0 MB
- Last analyzed
- Aug 25, 2026, 11:56 AM UTC
4d423ad46d0bf43cd22c9c1b5d25167edc15e784a57e94f889f1eefb5ce238a0Safety & 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 Bloxstrap.dll safe?
What is Bloxstrap.dll?
How many antivirus engines detected Bloxstrap.dll?
Is Bloxstrap.dll digitally signed?
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Community
Member reviews and reports for this exact file hash.