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Verdict Suspicious

Analyzed , 3 months ago

Is W-KemonoDownloader-4.3.0-x86_64-Portable.exe safe? Treat it as suspicious.

This unsigned portable executable exhibits suspicious direct-IP network communication and is associated with multiple malware family reports in community research, despite low…

Read the whole reasonShow less

Why Suspicious? 2 antivirus engines flag it, but no major engine agrees; nothing else confirms it.

Limited evidence · One sign points to a problem; nothing else confirms it.

Don't run it until you know where it came from

Do not execute this file. It is unsigned and exhibits evasive network behavior consistent with malicious software.

What to do now4 steps

Some signs point to a problem, but nothing confirms it is harmful. Treat it with caution.

What to do

  1. Don't run it unless you're sure where it came from.

  2. Check where you got it: an unexpected attachment, a link someone sent you or a re-upload is a red flag.

  3. If you can't confirm where it came from, delete it. If you need the program, download it again from the publisher's own website.

If you already ran it

  1. Stop using it, run a full scan with your antivirus and watch for unexpected behavior or security alerts.

Not sure what to do?

Ask the MalwareTips community before you run it. If you already ran it, follow the cleanup guide.

Paste this report's link in your topic so helpers can see what was found.

Why we think so

Share this file report

W-KemonoDownloader-4.3.0-x86_64-Portable.exe: Suspicious — MalwareTips file scan

The link always shows the latest result for this exact file (its SHA-256 fingerprint).

Reads the latest antivirus results for this file's hash. Nothing is uploaded.

Antivirus results

2 of 68 flagged

  • Flagged 2
  • No detection 66
  • No result 6
FileW-KemonoDownloader-4.3.0-x86_64-Portable.exe53.8 MBSHA-256 4a9d373f2d2e…83e5c1
  • Code signing Unsigned
  • Test run Completed
  • First seen 1y ago
2 of the 68 antivirus engines that checked it flag it, including APEX and Bkav.

Chapter 02

Why we think so

5 points against it and 3 in its favour, checked against the scan evidence.

MT AI Engine · Verdict analysis

The reasoning behind this verdict

Analyst conclusion

Our analysis identifies this file as suspicious due to its lack of a digital signature and the use of direct-IP communication, which often bypasses security filters. While major antivirus engines currently report it as clean, community research links this specific hash to known malware families, suggesting it may be a malicious component.

Where this verdict could be wrong3 caveats
  • The majority of engines (72/74) and all 17 major antivirus engines currently report the file as clean.
  • No malicious sandbox verdict was returned during the analysis run.
  • No malicious files it created were identified among the 10 inspected dropped files.

These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.

6 sources checked · 5 complete · 1 partial. See every source

Chapter 03

What it did in our test

It ran in our isolated test environment; no test environment rated what it did as risky.

Test run summary

Capture complete
  • 11sandbox rule tags
  • 9spawned processes
  • 9network contacts
  • 16filesystem & mutex artifacts

What the test run showed

What the file did on a test computer

Confirmed in the test run

  • Moderate concern: Contains packed or scrambled code that is harder to inspect (common in installers too).

  • Moderate concern: Ran commands or a script on the test computer.

  • Moderate concern: Checked whether it was running on a test computer.

  • Note: Listed the programs running on the test computer.

  • Note: Talked to servers over the internet during the test run.

  • Note: Read basic details of the test computer, such as its Windows version.

  • Note: Looked through folders on the test computer (most installers do this).

This file was run on a test computer (a sandbox), not on yours. Labels we could not confirm are listed so you can see them, but they are not treated as evidence against the file.

Recorded behavior

What happened in the test

Grouped by step. The order is not a timeline.

Seen in the test runWorked out from other results

  1. Input file

    The submitted object

    1
    1. Evidence 1 of 7: FileSeen in the test run

      W-KemonoDownloader-4.3.0-x86_64-Portable.exe

      4a9d373f2d2e828431b1e41df097281a15a22a1e4754cf05f013051ea983e5c1

      Uploaded file

  2. Processes

    What ran

    2
    1. Evidence 2 of 7: ProcessSeen in the test run

      executable.exe

      "C:\Users\<USER>\Desktop\executable.exe"

      Test run
    2. Evidence 3 of 7: ProcessSeen in the test run

      cmd.exe

      C:\Windows\system32\cmd.exe /c "ver"

      Test run
    3. +1 more recorded observation

  3. Files

    Created or changed

    2
    1. Evidence 4 of 7: Written fileSeen in the test run

      MSVCP140.dll

      C:\Users\<USER>\AppData\Local\Temp\_MEI61162\PyQt6\Qt6\bin\MSVCP140.dll

      Test run
    2. Evidence 5 of 7: Written fileSeen in the test run

      MSVCP140_1.dll

      C:\Users\<USER>\AppData\Local\Temp\_MEI61162\PyQt6\Qt6\bin\MSVCP140_1.dll

      Test run
    3. +1 more recorded observation

  4. Network

    Hosts contacted

    2
    1. Evidence 6 of 7: Contacted hostSeen in the test run

      140.82.113.5

      Contacted during the test run.

      Test run
    2. Evidence 7 of 7: Contacted hostSeen in the test run

      23.46.228.41

      Contacted during the test run.

      Test run
    3. +1 more recorded observation

7 facts from the test run. See the full activity list.

Chapter 04

Technical details

2 of the 68 antivirus engines that checked it flag it; no publisher signature.

Sources checked

Every check behind this verdict

6 sources checked · 5 complete · 1 partial. Complete means the check returned a usable result; it does not mean the file is safe.

SourceStatusResultChecked
Antivirus enginesVirusTotal · 74 enginesCompleteRisk signal: 2 of 68 engines flagged it · 6 gave no result Details for antivirus engines
Sandbox runVirusTotal sandboxesCompleteRuntime behaviour was recorded Details for sandbox run
Contacted hostsMalwareTips URL scannerPartial9 hosts contacted in the test run had no completed reputation check Details for contacted hosts
Signature rulesYARAify community rules + MalwareTips rulesCompleteNo rule matched
Malware sample databaseabuse.ch MalwareBazaarCompleteNot listed
Known-software referenceCIRCL hashlookupCompleteNo match

Engines that flagged it 2

  • APEXMalicious
  • BkavW32.Malware.90B996A8

File fingerprint

Last analyzed
Jul 23, 2026, 8:21 PM UTC
SHA-256
4a9d373f2d2e828431b1e41df097281a15a22a1e4754cf05f013051ea983e5c1
SHA-1
885c32997b632c64f58833af12e9ed8b80c24ed2
MD5
4faaeb19d52702a31df08aed63a520f7

About this file

W-KemonoDownloader-4.3.0-x86_64-Portable.exe is a Win32 EXE file of 53.8 MB.

Type and size
Win32 EXE · 53.8 MB
Signer
UnsignedNo code signature.
First seen
Jul 28, 2025On VirusTotal.
Submitted by
542 distinct sources
Packer
None detected
Entropy
8.00 of 8

First scanned

Chapter 05

Questions & answers

Short answers to the 6 questions people ask most about this file.

Is W-KemonoDownloader-4.3.0-x86_64-Portable.exe safe, or is it malware?
W-KemonoDownloader-4.3.0-x86_64-Portable.exe is rated Suspicious: some signs point to a problem, but nothing confirms it is harmful. 2 of the 68 antivirus engines that checked it flag it. Don't run it unless you're sure where it came from. If you need the program, download it again from the publisher's own website.
What is W-KemonoDownloader-4.3.0-x86_64-Portable.exe?
W-KemonoDownloader-4.3.0-x86_64-Portable.exe is a Windows program, about 53.8 MB. It carries no version information saying what it is or who made it. VirusTotal first saw it on Jul 28, 2025.
How many antivirus engines detected W-KemonoDownloader-4.3.0-x86_64-Portable.exe?
2 of the 68 antivirus engines that checked it flag W-KemonoDownloader-4.3.0-x86_64-Portable.exe, including APEX and Bkav. We weigh which engines flagged it and what else the scan found, not just the count.
I already downloaded and ran W-KemonoDownloader-4.3.0-x86_64-Portable.exe — what should I do?
No infection is confirmed: the rating is a caution, not a malware finding. 1) Check where it came from. If you can't confirm the source, delete it. 2) Run a full scan with your security software. 3) If the scan finds something, follow its removal steps and change passwords you typed on the device since then.
What is the SHA-256 hash of W-KemonoDownloader-4.3.0-x86_64-Portable.exe?
The SHA-256 fingerprint of W-KemonoDownloader-4.3.0-x86_64-Portable.exe is 4a9d373f2d2e828431b1e41df097281a15a22a1e4754cf05f013051ea983e5c1, and its MD5 is 4faaeb19d52702a31df08aed63a520f7. Two files with the same SHA-256 are identical, so use it to check you have exactly this file, not just one with the same name.
How up to date is this analysis of W-KemonoDownloader-4.3.0-x86_64-Portable.exe?
This report reflects the scan on Jul 23, 2026. A file's fingerprint never changes, but antivirus engines keep learning, so a rating can change later. To get a newer result, scan the file again: we refresh the antivirus results when the saved ones are out of date.
Chapter 06

Community

Member reviews and reports for this exact file hash.

Related file reports

Recent reports on other files with the same rating.

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This report and its SHA-256 fingerprint are public, so the next person who checks the same file gets an instant answer; documents and images are listed by type instead of their file name. A file we had not seen before is uploaded to VirusTotal, whose security partners and subscribers can download it; MalwareTips deletes its own copy after the scan. If you ran this file and are worried, scan your device with up-to-date security software.