GridinSoft Threat Intelligence
Qt5Core.dll threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as PUP.SystemOptimizer. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.
- Detection name
- PUP.SystemOptimizer
- Recommended action
- Scan and remove
- Last analysis
- 2022-04-08 23:05:58 (4 years ago)
- File hash
- b11d12d60ec1ecf99a250b5bbd7f9f1b
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as PUP.SystemOptimizer.
First seen 2020-12-13 15:20:57 (5 years ago); latest analysis 2022-04-08 23:05:58 (4 years ago).
Company metadata: The Qt Company Ltd. Product metadata: Qt5.
Signed by pcvisit software ag. The signature is reported as valid, but signed files can still be bundled or abused.
ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.
Recommended action
What to do next
- Compare the MD5 above with the file found on the device.
- Check whether the file appears in the observed locations or under one of the alternate names.
- Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present.
File context
Qt5Core.dll is a Windows file recorded in the ThreatInfo database. It is associated with Qt5. The reported company name is The Qt Company Ltd. The current detection status is PUP.SystemOptimizer, based on the latest analysis from 2022-04-08 23:05:58 (4 years ago).
If Qt5Core.dll appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as PUP.SystemOptimizer.
File Details
| Product Name: | Qt5 |
| Company Name: | The Qt Company Ltd |
| MD5: | b11d12d60ec1ecf99a250b5bbd7f9f1b |
| Size: | 4 MB |
| First Published: | 2020-12-13 15:20:57 (5 years ago) |
| Latest Published: | 2022-04-08 23:05:58 (4 years ago) |
| Status: | PUP.SystemOptimizer (on last analysis) | |
| Analysis Date: | 2022-04-08 23:05:58 (4 years ago) |
Detection screenshot
The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.
Overview
| Signed By: | pcvisit software ag |
| Status: | Valid |
The signature on Qt5Core.dll is reported as valid. A valid signature helps confirm publisher identity, but it does not automatically make the file safe if the installer was bundled, abused, or downloaded from an untrusted source.
Common Places:
| %localappdata%\pcvisit software ag\caloa\pcvisit.support.guest\release |
| %programfiles%\pcvisit software ag |
ThreatInfo has observed Qt5Core.dll in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.
Geographic signal
Observed country distribution
ThreatInfo has seen Qt5Core.dll across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Germany with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for Qt5Core.dll is Windows 10 with 100.0% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.
Analysis
Qt5Core.dll is identified as pe for 32-bit systems. The subsystem is Windows GUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
812ede14061a2d17fd7ded42450b01f4
8e647b1871f670c42c5ed76160b14955
4dc16f38732fb0298d6c6387e93f016d
f690fc2bd73c9b4af8b9920786e0573d
01d8156f0f4257d308963a3e20a79b21
PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.
Report conclusion
GridinSoft detects this file as PUP.SystemOptimizer
This report identifies Qt5Core.dll by MD5 b11d12d60ec1ecf99a250b5bbd7f9f1b. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.