MalwareTips
Threat LensFile scan report

Is Qt5Core.dll safe?

Verdict
Safe

No antivirus engine detected this established, validly signed CD PROJEKT DLL, and its runtime and structural evidence revealed no corroborating threat activity.

All 74 antivirus engines returned no detection, including 17 tier-1 engines. The DLL is validly signed by CD PROJEKT S.A., is broadly established across 365 sources, and produced no offensive techniques or malicious sandbox assessment during one completed run.

Use with normal care

Use the DLL normally when it came with legitimate CD PROJEKT software. If its origin is unknown, replace it through the official game client or publisher while keeping endpoint protection enabled.

Read the full analysis
Saved file evidenceAntivirus consensus
0of 74 flagged
Flagged 0No detection 74
Digital specimenQt5Core.dll5f211f05695e1e0d26…a947ab001ec0da
Size7.2 MB
Code signingCD PROJEKT S.A.
SandboxRuntime complete
First seen1y ago
Evidence3 priority signals
0 of 74 antivirus engines flagged the file.

Recommended next actions

01

Before using

Use it only as part of software obtained from the developer's official site or another source you independently trust.

02

If you already used it

Keep normal device protection enabled and stop if the file behaves unexpectedly.

Chapter 02

Intelligence

The saved assessment, checked against the scan evidence and recorded coverage.

MT AI Engine · Verdict analysis

The reasoning behind this verdict

This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.

96%Confidence
Very high
Analyst conclusion

All 74 antivirus engines returned no detection, including 17 tier-1 engines. The DLL is validly signed by CD PROJEKT S.A., is broadly established across 365 sources, and produced no offensive techniques or malicious sandbox assessment during one completed run.

Where this verdict could be wrong3 caveats
  • signing.signerStats.totalSamples=1 provides little standalone history, although five additional signer-matched prior verdicts are consistently safe.
  • contactedHosts=null, so no completed host-reputation cross-check is available; the sandbox recorded no contacted domains, IPs, or URLs.
  • The file tags include 'detect-debug-environment' and 'corrupt', but no engine detection, offensive technique, packing indicator, or malicious sandbox verdict corroborates them.

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

Recommended action

Use the DLL normally when it came with legitimate CD PROJEKT software. If its origin is unknown, replace it through the official game client or publisher while keeping endpoint protection enabled.

Scan transparency

Coverage & freshness

4 of 5 complete

Complete means the check returned a usable result. It does not mean the file is safe.

  • Antivirus

    Complete

    0 of 74 engines flagged the file.

  • Sandbox

    Complete

    1 isolated runtime environment contributed observations.

  • Network

    Not run

    No contacted-host reputation check is recorded.

    No timestamp recorded

  • YARA

    Complete

    Rule evaluation completed with no recorded matches.

  • External intel

    Complete

    3 of 3 independent reference sources completed.

Chapter 03

Behavior

Plain-English impact first, then the observed runtime evidence.

Runtime flight recorder

Capture complete
  • 1isolated sandbox run
  • 17MITRE ATT&CK techniques
  • 8spawned processes
  • 0network contacts
  • 2filesystem & mutex artifacts
Recorded behavior

Attack story

Runtime observations grouped by analysis stage. Arrows organize the stages; they do not claim chronology or causality.

ObservedDerived

4 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.

Chapter 04

Detection & Forensics

Consensus, attribution, signatures, code structure, prevalence, and identity.

Chapter 05

Safety & FAQ

Complete recovery guidance and answers for the next decision.

What to do now

This file appears low risk based on the evidence available now.

  1. Recovery step 01

    Use it only as part of software obtained from the developer's official site or another source you independently trust.

  2. Recovery step 02

    A clean result reduces known risk, but it cannot guarantee that every new or targeted threat has been detected.

  3. Recovery step 03

    Keep your antivirus and Windows updates switched on so you stay protected.

Safety FAQ

Direct answers grounded in the saved verdict and evidence in this report.

7 evidence-based answers
Is Qt5Core.dll safe?
Evidence-based answer
Qt5Core.dll appears safe. 0 of 74 antivirus engines flagged it. It carries a verified digital signature from CD PROJEKT S.A.. Use it only as part of software obtained from the developer's official site or another source you independently trust.
What is Qt5Core.dll?
Evidence-based answer
Qt5Core.dll is a Windows library or loadable module, about 7.2 MB. Our analysis did not identify a verdict-driving threat signal. It carries a verified digital signature from CD PROJEKT S.A.. A file's name can be reused by different files, so we identify it by its cryptographic hash (below).
How many antivirus engines detected Qt5Core.dll?
Evidence-based answer
None — 0 of 74 antivirus engines flagged Qt5Core.dll. That's reassuring, though it is not proof that a file is safe, so we also weigh its behaviour, identity, and reputation.
Is Qt5Core.dll digitally signed?
Evidence-based answer
Yes — Qt5Core.dll carries a valid digital signature from CD PROJEKT S.A., which confirms the file hasn't been tampered with since that publisher signed it. A valid signature is a positive signal, but note that malware is occasionally signed with stolen or abused certificates, so it isn't proof of safety on its own.
What is the SHA-256 hash of Qt5Core.dll?
Evidence-based answer
The SHA-256 hash of Qt5Core.dll is 5f211f05695e1e0d26c0eaeab2d4774ee43a131d108e7ec2e9a947ab001ec0da, and its MD5 is f7e5a7c3bcf0d09fa57f90c8e93b2f7b. This hash is the file's unique fingerprint — two files with the same SHA-256 are identical. Use it to confirm you're looking at exactly this file (not just one with the same name) when comparing against antivirus databases or a download's published checksum.
Is it safe to use Qt5Core.dll?
Evidence-based answer
Based on the recorded evidence, Qt5Core.dll has a low observed risk and is properly signed. The important caveat is source: make sure you downloaded it from the official website or a trusted store, because attackers sometimes distribute malware-laced copies under a legitimate file's name. If your own antivirus flags it, verify the source and the exact hash before overriding the warning.
How up to date is this analysis of Qt5Core.dll?
Evidence-based answer
This report reflects the scan run on September 23, 2026. Because a file's hash never changes, the identity of Qt5Core.dll is fixed — but antivirus coverage improves over time, so a file that looks clean today can pick up detections later (and vice-versa). If you need the latest picture, MalwareTips staff can re-run the analysis from scratch.
Chapter 06

Community

Member reviews and reports for this exact file hash.

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