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Verdict Malicious

Analyzed , 1 day ago

Is capstone.dll safe? No, we rate this exact file malicious.

Four community detection rules tied to known malware families matched this unsigned 64-bit DLL, while only one engine assigned a malicious score and three isolated runs showed no…

Read the whole reasonShow less

Moderate evidence · Few antivirus engines flag it; other checks support the rating.

Don't use this component

If you already used it, follow the steps below.

What to do now4 steps

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

If you haven't used it

  1. Don't use this component. Let your antivirus remove this component, then repair or reinstall the program it belongs to from its official website. Don't delete or replace the file by hand.

If you already used 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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capstone.dll: Malicious — MalwareTips file scan

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

Antivirus results

1 of 70 flagged

  • Flagged 1
  • No detection 69
  • No result 5
Filecapstone.dll7.6 MBSHA-256 76958e183800…c5d6c3
  • Code signing Unsigned
  • Test run Completed
  • First seen 5mo ago
4 strong detection rules matched this file.

Chapter 02

Why we think so

5 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

This unsigned DLL matched four community detection rules that reference known malware families and their code patterns, alongside a malicious score from a single engine. Against that, eighteen of the most trusted engines in our network were silent and three isolated execution runs produced no injection, persistence or network callbacks. The split between static rule matches and quiet runtime leaves real doubt about intent, so treat the module as untrusted unless you can confirm where it came from.

Where this verdict could be wrong4 caveats
  • All three isolated execution runs came back clean: no process injection, no persistence, no file drops and no remote control traffic were recorded.
  • Community detection rules often match code and strings shared with legitimate libraries; several families that carry a disassembly engine inside them would trip such rules against the engine binary itself.
  • The exported entry points and the layout of this module resemble a widely used open-source disassembly library, which would make the family-rule matches collateral rather than evidence of malicious code.
  • Eighteen of the most trusted antivirus engines in our network and the other sixty-odd reporting engines produced nothing at all.

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 not needed or not applicable. See every source

Chapter 03

What it did in our test

It ran in 3 isolated tests; no test environment rated what it did as risky.

Test run summary

Capture complete
  • 3isolated sandbox runs
  • 12sandbox rule tags
  • 15spawned processes
  • 0network contacts
  • 25filesystem & 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: 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 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 trojans work

A trojan pretends to be something useful or harmless so that you run it. Once open, it does its real job in the background, from stealing data to opening a back door or downloading more malware.

Bottom line:The disguise is the whole trick, so a trustworthy-looking name or icon means nothing.

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

      capstone.dll

      76958e18380023a68fd1714fa2e01c594cc6db1955a07ad6937b66e66dc5d6c3

      Uploaded file

  2. Processes

    What ran

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

      rundll32.exe

      "C:\Windows\sysnative\rundll32.exe" "C:\Users\<USER>\Desktop\readme.dll",#1

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

      loaddll64.exe

      C:\Windows\System32\loaddll64.exe loaddll64.exe "C:\Users\user\Desktop\init.dll"

      Test run
    3. +1 more recorded observation

  3. Files

    Created or changed

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

      Temp

      C:\ProgramData\Microsoft\Windows\WER\Temp

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

      b66778ea-3751-4059-a033-61fb1b205827

      C:\ProgramData\Microsoft\Windows\WER\Temp\b66778ea-3751-4059-a033-61fb1b205827

      Test run
    3. +1 more recorded observation

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

Chapter 04

Technical details

1 of the 70 antivirus engines that checked it flags it; no publisher signature.

Sources checked

Every check behind this verdict

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

SourceStatusResultChecked
Antivirus enginesVirusTotal · 75 enginesCompleteWorth noting: 1 of 70 engines flagged it · 5 gave no result Details for antivirus engines
Sandbox runVirusTotal sandboxes · C2AE, CAPE Sandbox, ZenboxComplete3 runs: 1 clean, 2 without a verdict Details for sandbox run
Contacted hostsMalwareTips URL scannerNot neededThe sandbox recorded no contacted hosts to checkNo date recorded
Signature rulesYARAify community rules + MalwareTips rulesCompleteRisk signal: 6 community YARA rules (4 malware-specific) Details for signature rules
Malware sample databaseabuse.ch MalwareBazaarCompleteNot listed
Known-software referenceCIRCL hashlookupCompleteNo match

Engines that flagged it 1

  • CynetMalicious (score: 100)

File fingerprint

Last analyzed
Nov 6, 2026, 2:55 PM UTC
SHA-256
76958e18380023a68fd1714fa2e01c594cc6db1955a07ad6937b66e66dc5d6c3
SHA-1
629ef99bda84952590b3d9f56d6f9fd05b3ee622
MD5
172be0a3a167646aa42d6c0133e082c0

About this file

capstone.dll is a Win32 DLL file of 7.6 MB.

Type and size
Win32 DLL · 7.6 MB
Signer
UnsignedNo code signature.
First seen
May 28, 2026On VirusTotal.
Submitted by
14 distinct sources
Packer
None detected
Entropy
3.01 of 8

First scanned

Chapter 05

Questions & answers

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

Is capstone.dll a virus?
Yes. This copy of capstone.dll (SHA-256 76958e18…d6c3) is malicious. Other files with the same name can be different, so check the hash. Don't use it. Let your antivirus remove this component, then repair or reinstall the program it belongs to from its official website. Don't delete or replace the file by hand. 1 of the 70 antivirus engines that checked it flags it. Antivirus engines classify it as a trojan: malware disguised as something harmless so that you run it. If you've already used it, see the steps below.
What is capstone.dll?
capstone.dll is a Windows library (DLL), about 7.6 MB. It carries no version information saying what it is or who made it. VirusTotal first saw it on May 28, 2026.
How many antivirus engines detected capstone.dll?
1 of the 70 antivirus engines that checked it flags capstone.dll (Cynet). 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.
What should I do if I already used capstone.dll?
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 capstone.dll?
To remove capstone.dll: 1) run a full scan with your antivirus and let it remove what it finds. 2) Let your antivirus remove this component, then repair or reinstall the program it belongs to from its official website. Don't delete or replace the file by hand. 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 capstone.dll?
Antivirus engines classify capstone.dll as a trojan: malware disguised as something harmless so that you run it.
What is the SHA-256 hash of capstone.dll?
The SHA-256 fingerprint of capstone.dll is 76958e18380023a68fd1714fa2e01c594cc6db1955a07ad6937b66e66dc5d6c3, and its MD5 is 172be0a3a167646aa42d6c0133e082c0. 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 capstone.dll?
This report reflects the scan on Nov 6, 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.