MalwareTips

File scan report

Scan another file

Verdict Suspicious

Analyzed , 7 days ago

Is Install.exe safe? Treat it as suspicious.

An unsigned installer flagged by 3 of the 71 antivirus engines that checked it with generic labels only; the sandbox runs showed ordinary installer behaviour, but the lack of a…

Read the whole reasonShow less

Why Suspicious? 3 antivirus engines flag it; nothing else confirms it.

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

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

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

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 install 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 installed 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

Install.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

3 of 71 flagged

  • Flagged 3
  • No detection 68
  • No result 4
FileInstall.exe9.7 MBSHA-256 c4142bb2617e…b2982c
  • Code signing Unsigned
  • Test run Completed
  • First seen 3y ago
3 of the 71 antivirus engines that checked it flag it, including Trellix (McAfee) and Fortinet.

Chapter 02

Why we think so

4 points against it and 4 in its favour, checked against the scan evidence.

MT AI Engine · Verdict analysis

The reasoning behind this verdict

Analyst conclusion

Fortinet and Trellix, two major antivirus engines, plus Webroot flag this unsigned installer with generic rule labels that name no malware family. Nine sandbox runs showed typical installer activity: temporary setup files, bundled audio and graphics libraries, no process injection and no persistence. It has circulated for over three years, yet no publisher identity vouches for it.

Where this verdict could be wrong2 caveats
  • The detections are generic rule-based buckets with no named family. The file has also circulated for over three years among about 100 submitters, and the sandbox recorded no high-risk techniques, which points toward a false positive.
  • Three dropped components match known-software reference entries.

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 9 isolated tests; no test environment rated what it did as risky.

Test run summary

Capture complete
  • 9isolated sandbox runs
  • 24sandbox rule tags
  • 15spawned processes
  • 2network contacts
  • 27filesystem & 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: Downloaded a file during the test run.

  • Moderate concern: Unpacked hidden content while it ran.

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

  • Note: Read the user name of the test computer.

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

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

  • Not confirmed: A sandbox rule tagged this run as recording keystrokes; no keylogging was confirmed.

  • 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 7: FileSeen in the test run

      Install.exe

      c4142bb2617eade50e8355af3ceb272a4afa70c443ac7824a88923b172b2982c

      Uploaded file

  2. Processes

    What ran

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

      Install.exe

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

      Install.tmp

      %USERPROFILE%\AppData\Local\Temp\is-L213K.tmp\Install.tmp

      Test run
    3. +1 more recorded observation

  3. Files

    Created or changed

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

      _shfoldr.dll

      C:\Users\Virtual\AppData\Local\Temp\is-KEOET.tmp\_isetup\_shfoldr.dll

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

      D3DX9_43.dll

      C:\Users\Virtual\AppData\Local\Temp\is-KEOET.tmp\D3DX9_43.dll

      Test run
    3. +1 more recorded observation

  4. Network

    Hosts contacted

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

      209.197.3.8

      Contacted during the test run.

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

      23.32.75.27

      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

3 of the 71 antivirus engines that checked it flag it; no publisher signature.

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 enginesCompleteRisk signal: 3 of 71 engines flagged it · 4 gave no result Details for antivirus engines
Sandbox runVirusTotal sandboxes · C2AE, CAPA, CAPE SandboxComplete9 runs: 1 clean, 8 without a verdict Details for sandbox run
Contacted hostsMalwareTips URL scannerComplete11 contacted hosts checked Details for contacted hosts
Signature rulesYARAify community rules + MalwareTips rulesComplete3 community YARA rules (generic only) · 1 MalwareTips behaviour rule Details for signature rules
Malware sample databaseabuse.ch MalwareBazaarCompleteNot listed
Known-software referenceCIRCL hashlookupCompleteNo match

Engines that flagged it 3

  • Fortinet (major engine)W32/PossibleThreat
  • TrellixENS (major engine)Artemis!3E9A8674CE31
  • WebrootW32.Malware.Gen

File fingerprint

Last analyzed
Oct 19, 2026, 6:41 AM UTC
SHA-256
c4142bb2617eade50e8355af3ceb272a4afa70c443ac7824a88923b172b2982c
SHA-1
ef1b87a05f3150b9e1f84bd058375521c7f71571
MD5
3e9a8674ce31441eb5feea8854e7b380

About this file

Install.exe says it is KaOs Repacks™ (KaOs®), 9.7 MB.

Claims to be
KaOs Repacks™ (KaOs®)From the file's own version information, written by whoever built it.
Type and size
Win32 EXE · 9.7 MB
Signer
UnsignedNo code signature.
First seen
May 31, 2023On VirusTotal.
Submitted by
101 distinct sources
Packer
None detected
Entropy
5.65 of 8

First scanned

Chapter 05

Questions & answers

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

Is Install.exe safe, or is it malware?
Install.exe is rated Suspicious: some signs point to a problem, but nothing confirms it is harmful. 3 of the 71 antivirus engines that checked it flag it. Don't install it unless you're sure where it came from. If you need the software, download a fresh installer from the developer's own website.
What is Install.exe?
Install.exe is a software installer, about 9.7 MB. Its version information says it is “KaOs Repacks™” (KaOs®). Version information is written by whoever built the file, so it is a claim, not proof of who made it. VirusTotal first saw it on May 31, 2023.
How many antivirus engines detected Install.exe?
3 of the 71 antivirus engines that checked it flag Install.exe, including Trellix (McAfee) and Fortinet. We weigh which engines flagged it and what else the scan found, not just the count.
I already downloaded and installed Install.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 Install.exe?
The SHA-256 fingerprint of Install.exe is c4142bb2617eade50e8355af3ceb272a4afa70c443ac7824a88923b172b2982c, and its MD5 is 3e9a8674ce31441eb5feea8854e7b380. 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 Install.exe?
This report reflects the scan on Oct 19, 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

Other files people checked with the same name, and recent reports with the same rating. A matching name does not make two files the same: only the SHA-256 fingerprint identifies a file.

All file reports
Scan another
Check a different file
URL instead?
Check if a link is safe
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.