GridinSoft Threat Intelligence
Defrag.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.WinUtilities. 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.WinUtilities
- Recommended action
- Scan and remove
- Last analysis
- 2024-11-30 23:01:12 (a year ago)
- File hash
- 383f1f79a8ce6783e468dc57b0fad20a
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as PUP.WinUtilities, part of the PUP threat category.
Potentially unwanted programs, bundlers, installers, and utilities with intrusive behavior. Related PUP reports help compare this file with nearby detections, publishers, and hashes.
First seen 2023-01-17 23:02:35 (3 years ago); latest analysis 2024-11-30 23:01:12 (a year ago).
Company metadata: YL Software. Product metadata: WinUtilities DiskDefrag Module.
Signed by Suining YiLong Software Store. 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. Review the PUP category for related samples and common context.
File context
Defrag.dll is a Windows file recorded in the ThreatInfo database. It is associated with WinUtilities DiskDefrag Module. The reported company name is YL Software. The current detection status is PUP.WinUtilities, based on the latest analysis from 2024-11-30 23:01:12 (a year ago). ThreatInfo groups this verdict with PUP reports for broader family-level investigation.
If Defrag.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.WinUtilities.
File Details
| Product Name: | WinUtilities DiskDefrag Module |
| Company Name: | YL Software |
| MD5: | 383f1f79a8ce6783e468dc57b0fad20a |
| Size: | 231 KB |
| First Published: | 2023-01-17 23:02:35 (3 years ago) |
| Latest Published: | 2024-11-30 23:01:12 (a year ago) |
| Status: | PUP.WinUtilities (on last analysis) | |
| Analysis Date: | 2024-11-30 23:01:12 (a year 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: | Suining YiLong Software Store |
| Status: | Valid |
The signature on Defrag.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:
| %programfiles% |
ThreatInfo has observed Defrag.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 Defrag.dll across 2 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 50.0% 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 Defrag.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
Defrag.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.
66f7f04f1f6069bcf8e2ecc445ee02a1
c5337430f18223aa0676972552c57584
6c57f25e9bf42b5d794a5c1a87f1214a
a6b0f239848dc33f830646b92325af5f
6a98277376fc2fb1e65015a758c8ac16
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.WinUtilities
This report identifies Defrag.dll by MD5 383f1f79a8ce6783e468dc57b0fad20a. It is part of the PUP report group. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.