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Verdict Malicious

Analyzed , 4 days ago

Is FL Keygen.exe safe? No, we rate this exact file malicious.

This unsigned software keygen is flagged as a trojan by 46 of the 71 antivirus engines that checked it, including ten major antivirus engines such as Microsoft, ESET, TrendMicro…

Read the whole reasonShow less

Strong evidence · Two or more major antivirus engines agree.

Don't run this file

Delete this file and do not run it; obtain software licences from the official vendor. Keep your antivirus enabled and run a full system scan if the file was executed.

What to do now4 steps

This file is harmful. Don't run it, and remove it.

If you haven't run it

  1. Don't run this file. Delete it, then empty the Recycle Bin.

If you already ran it

  1. Disconnect the device from the internet, then run a full antivirus scan. Microsoft Defender Offline (Windows Security > Virus & threat protection > Scan options) also finds malware that hides while Windows runs.

  2. If you typed passwords on the device after running it, change them from another device you trust.

  3. If the scan keeps finding it, or the device still acts strangely, scan again with a second-opinion scanner from another company; if that doesn't fix it, back up your personal files and reinstall Windows.

If you already ran it, do these in order.

If you opened or installed it

Avoid banking and sign-ins on that device until it is clean. These free MalwareTips guides walk you through it.

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

Why we think so

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FL Keygen.exe: Malicious — MalwareTips file scan

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

Antivirus results

46 of 71 flagged

  • Flagged 46
  • No detection 25
  • No result 4
FileFL Keygen.exe4.3 MBSHA-256 9a00f90a730f…bc4ad9
  • Code signing Unsigned
  • Test run Completed
  • First seen 2mo ago
When we scanned it, 1,667 sources had submitted it to VirusTotal (1,974 submissions).

Chapter 02

Why we think so

5 points against it and 2 in its favour, checked against the scan evidence.

MT AI Engine · Verdict analysis

The reasoning behind this verdict

Analyst conclusion

This unsigned key generator self-extracts a GUI program and a DLL into the Temp folder. Keygens are a common way to spread trojans, and the volume of detections makes running it a serious risk.

Where this verdict could be wrong3 caveats
  • None of the sandbox runs returned a malicious verdict, and no injection target, persistence or malicious network contact was recorded.
  • Keygens often draw trojan detections simply for being cracking tools, and Panda only calls it a potentially unwanted keygen.
  • No engine family consensus exists; most labels are generic trojan buckets.

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

Test run summary

Capture complete
  • 6isolated sandbox runs
  • 12sandbox rule tags
  • 5spawned processes
  • 0network contacts
  • 10filesystem & 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: Checked whether it was running on a test computer.

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

  • 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).

  • Note: Loaded extra code modules while running.

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 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.

Threat context

How cracked-software installers work

A crack or patch installer is one of the most common ways to spread trojans. Even if the program seems to work, it can install malware in the background.

Bottom line:There is no safe copy of a cracked installer: delete it, and get the software from its real publisher.

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

      FL Keygen.exe

      9a00f90a730fba4e7002f0594ac0605c7c534ef6a67255d4458e977139bc4ad9

      Uploaded file

  2. Processes

    What ran

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

      FL Keygen.exe

      "C:\Users\<USER>\Desktop\FL Keygen.exe"

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

      KeygenGUI.exe

      "C:\Users\<USER>\AppData\Local\Temp\SFXBF68\KeygenGUI.exe"

      Test run
    3. +1 more recorded observation

  3. Files

    Created or changed

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

      KeygenGUI.exe

      C:\Users\<USER>\AppData\Local\Temp\SFXBF68\KeygenGUI.exe

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

      Keygen.dll

      C:\Users\<USER>\AppData\Local\Temp\SFXBF68\Keygen.dll

      Test run
    3. +1 more recorded observation

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

Chapter 04

Technical details

46 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: 46 of 71 engines flagged it · 4 gave no result Details for antivirus engines
Sandbox runVirusTotal sandboxes · C2AE, CAPA, CAPE SandboxComplete6 runs, no sandbox verdict recorded 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

Engines that flagged it 46

  • Avast (major engine)Win64:MalwareX-gen [Misc]
  • AVG (major engine)Win64:MalwareX-gen [Misc]
  • Avira (major engine)TR/W64.Agent
  • BitDefender (major engine)Trojan.GenericKD.81176057
  • Emsisoft (major engine)Trojan.GenericKD.81176057 (B)
  • ESET-NOD32 (major engine)Win64/Agent_AGen.RSD trojan
  • F-Secure (major engine)Trojan.TR/W64.Agent
  • GData (major engine)Trojan.GenericKD.81176057
38 more in the full engine list

File fingerprint

Last analyzed
Oct 21, 2026, 6:19 PM UTC
SHA-256
9a00f90a730fba4e7002f0594ac0605c7c534ef6a67255d4458e977139bc4ad9
SHA-1
afcce7cd2f07fc39a40c92a33aeb606597d11686
MD5
cf29db21a24cc6a966f76dae02ab1798

About this file

FL Keygen.exe is a Win32 EXE file of 4.3 MB.

Type and size
Win32 EXE · 4.3 MB
Signer
UnsignedNo code signature.
First seen
Aug 19, 2026On VirusTotal.
Submitted by
1,667 distinct sources
Packer
None detected
Entropy
6.10 of 8

First scanned

Chapter 05

Questions & answers

Short answers to the 8 questions people ask most about this file.

Is FL Keygen.exe malware?
Yes. This copy of FL Keygen.exe (SHA-256 9a00f90a…4ad9) is malicious. Other files with the same name can be different, so check the hash. Don't run it. Delete it, then empty the Recycle Bin. 46 of the 71 antivirus engines that checked it flag it. Antivirus engines classify it as a trojan hidden in a cracked-software installer. If you've already run it, see the steps below.
What is FL Keygen.exe?
FL Keygen.exe is a Windows program, about 4.3 MB. It carries no version information saying what it is or who made it. VirusTotal first saw it on Aug 19, 2026.
How many antivirus engines detected FL Keygen.exe?
46 of the 71 antivirus engines that checked it flag FL Keygen.exe, including Microsoft and ESET. We weigh which engines flagged it and what else the scan found, not just the count. The rating comes from all the evidence together, not from this count alone.
I already downloaded and ran FL Keygen.exe — what should I do?
Act quickly. 1) Disconnect the device from the internet. 2) Run a full scan with your antivirus and let it remove what it finds. 3) Change your important passwords from another device you trust, starting with email and banking, and turn on two-step verification. 4) If you bank or shop on this device, watch your accounts and tell your bank about payments you don't recognise. 5) If the scan keeps finding it, back up your personal files and reinstall Windows.
How do I remove FL Keygen.exe?
To remove FL Keygen.exe: 1) run a full scan with your antivirus and let it remove what it finds. 2) Delete it, then empty the Recycle Bin. 3) Check Settings > Apps, your browser extensions, startup apps (Task Manager > Startup apps) and scheduled tasks for anything you don't recognise. 4) Restart and scan again. If it keeps coming back, scan from Safe Mode with Networking, or back up your files and reinstall Windows.
What kind of malware is FL Keygen.exe?
Antivirus engines classify FL Keygen.exe as a trojan hidden in a cracked-software installer.
What is the SHA-256 hash of FL Keygen.exe?
The SHA-256 fingerprint of FL Keygen.exe is 9a00f90a730fba4e7002f0594ac0605c7c534ef6a67255d4458e977139bc4ad9, and its MD5 is cf29db21a24cc6a966f76dae02ab1798. 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 FL Keygen.exe?
This report reflects the scan on Oct 21, 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.