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Verdict Suspicious

Analyzed , 2 days ago

Is Loopko cheap4 jer.jar safe? Treat it as suspicious.

None of the 53 antivirus engines that checked it flagged this Java archive, but the sandbox results conflict and the file is rare and first seen on Oct 23, 2026.

Read the whole reasonShow less

Why Suspicious? One sandbox test run rated it malicious while another found nothing; nothing else confirms it.

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

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

If it came from a link, an attachment or a stranger, delete it.

What to do now5 steps

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

What to do

  1. Don't open or 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.

  4. It is only 2 days old. If you're unsure, scan it again in a few days; antivirus engines often catch up on new files.

If you already opened or 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

Loopko cheap4 jer.jar: 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

0 of 53 flagged

  • Flagged 0
  • No detection 53
  • No result 22
FileLoopko cheap4 jer.jar1.8 MBSHA-256 46fe0f9ea802…ae5d94
  • Code signing Not applicable
  • Test run Completed
  • First seen 2d ago
A sandbox test run rated its behaviour as malicious.

Chapter 02

Why we think so

3 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

The combined sandbox verdict, however, mixed a malware/trojan label with a clean result, and no behaviour we recorded confirms either outcome. The file was submitted by a single source and was first seen on Oct 23, 2026, so there is not enough evidence to call it safe or harmful.

Where this verdict could be wrong1 caveat
  • The sandbox label includes a malware/trojan result. Fresh Java archives are often missed by antivirus engines, so the clean engine results do not fully rule out a threat.

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 · all complete. See every source

Chapter 03

What it did in our test

It ran in 3 isolated tests; 1 test environment rated what it did as risky.

Test run summary

Capture complete
  • 3isolated sandbox runs
  • 14sandbox rule tags
  • 4spawned processes
  • 0network contacts
  • 11filesystem & 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: Hid files or windows on the test computer.

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

  • Note: Loaded extra code modules while running.

  • Note: Checked which security software was installed on the test computer.

Sandbox labels we could not confirm (common in safe files too)

  • Not confirmed: A sandbox rule tagged this run as code injection, but no injected program was recorded.

  • Not confirmed: A sandbox rule tagged this run as downloading a file, but no download was recorded.

  • Not confirmed: A sandbox rule tagged this run as changing how Windows loads code; nothing confirms it.

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 5: FileSeen in the test run

      Loopko cheap4 jer.jar

      46fe0f9ea8029a39f6acb540bc7d0f9c869a5fabc7e90502c44b40b47dae5d94

      Uploaded file

  2. Processes

    What ran

    2
    1. Evidence 2 of 5: ProcessSeen in the test run

      javaw.exe

      "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\<USER>\Desktop\sample.jar"

      Test run
    2. Evidence 3 of 5: ProcessSeen in the test run

      cmd.exe

      C:\Windows\SysWOW64\cmd.exe C:\Windows\system32\cmd.exe /c ""C:\Program Files\Java\jre1.8.0_441\bin\java.exe" -jar "C:\Users\user\Desktop\runtime.jar""

      Test run
    3. +1 more recorded observation

  3. Files

    Created or changed

    2
    1. Evidence 4 of 5: Written fileSeen in the test run

      4396

      C:\Users\<USER>\AppData\Local\Temp\hsperfdata_<USER>\4396

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

      3903daac9bc4a3b7.timestamp

      C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

      Test run
    3. +1 more recorded observation

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

Chapter 04

Technical details

None of the 53 antivirus engines that checked it flag it.

Sources checked

Every check behind this verdict

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

SourceStatusResultChecked
Antivirus enginesVirusTotal · 75 enginesCompletePositive signal: 0 of 53 engines flagged it · 22 gave no result Details for antivirus engines
Sandbox runVirusTotal sandboxes · CAPE Sandbox, Zenbox, Zenbox LinuxCompleteWorth noting: 3 runs: 1 malicious, 1 clean, 1 without a verdict Details for sandbox run
Contacted hostsMalwareTips URL scannerComplete1 contacted host checked
Signature rulesYARAify community rules + MalwareTips rulesComplete1 MalwareTips behaviour rule Details for signature rules
Malware sample databaseabuse.ch MalwareBazaarCompleteNot listed
Known-software referenceCIRCL hashlookupCompleteNo match

File fingerprint

Last analyzed
Oct 23, 2026, 7:30 PM UTC
SHA-256
46fe0f9ea8029a39f6acb540bc7d0f9c869a5fabc7e90502c44b40b47dae5d94
SHA-1
812db131199e7c8036bfdcbb10bd87cd3d5d571a
MD5
aaef38870da217d1193bf1cdbcc1e493

About this file

Loopko cheap4 jer.jar is a JAR file of 1.8 MB.

Type and size
JAR · 1.8 MB
Signer
Not applicable
First seen
Oct 23, 2026On VirusTotal.
Submitted by
1 sourceRarely seen: few people have submitted this exact file.

First scanned

Chapter 05

Questions & answers

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

Is Loopko cheap4 jer.jar safe, or is it malware?
Loopko cheap4 jer.jar is rated Suspicious: some signs point to a problem, but nothing confirms it is harmful. No antivirus engine flags it; the caution comes from other evidence, such as who made it, how widely it is used or what it did in a test run. Don't open or run it unless you're sure where it came from. If you need it, download it again from the project's own website.
What is Loopko cheap4 jer.jar?
Loopko cheap4 jer.jar is a Java program (JAR), about 1.8 MB. VirusTotal first saw it on Oct 23, 2026.
How many antivirus engines detected Loopko cheap4 jer.jar?
None of the 53 antivirus engines that checked it flag Loopko cheap4 jer.jar. A clean antivirus result is not proof of safety; the caution comes from other evidence, such as who made it, how widely it is used or what it did in a test run.
What should I do if I already opened or ran Loopko cheap4 jer.jar?
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 Loopko cheap4 jer.jar?
The SHA-256 fingerprint of Loopko cheap4 jer.jar is 46fe0f9ea8029a39f6acb540bc7d0f9c869a5fabc7e90502c44b40b47dae5d94, and its MD5 is aaef38870da217d1193bf1cdbcc1e493. 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 Loopko cheap4 jer.jar?
This report reflects the scan on Oct 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.

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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.