GridinSoft Threat Intelligence
liblzma.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.WebCompanion. 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.WebCompanion
- Recommended action
- Scan and remove
- Last analysis
- 2025-08-10 23:03:05 (9 months ago)
- File hash
- 64521bdd3b3af0af4508279b59772ab6
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as PUP.WebCompanion.
First seen 2025-08-10 23:03:05 (9 months ago); latest analysis 2025-08-10 23:03:05 (9 months ago).
Company metadata: The Tukaani Project <https://tukaani.org/>. Product metadata: XZ Utils <https://tukaani.org/xz/>.
Signed by Adaware Software (7270356 CANADA INC.). 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
liblzma.dll is a Windows file recorded in the ThreatInfo database. It is associated with XZ Utils <https://tukaani.org/xz/>. The reported company name is The Tukaani Project <https://tukaani.org/>. The current detection status is PUP.WebCompanion, based on the latest analysis from 2025-08-10 23:03:05 (9 months ago).
If liblzma.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.WebCompanion.
File Details
| Product Name: | XZ Utils <https://tukaani.org/xz/> |
| Company Name: | The Tukaani Project <https://tukaani.org/> |
| MD5: | 64521bdd3b3af0af4508279b59772ab6 |
| Size: | 193 KB |
| First Published: | 2025-08-10 23:03:05 (9 months ago) |
| Latest Published: | 2025-08-10 23:03:05 (9 months ago) |
| Status: | PUP.WebCompanion (on last analysis) | |
| Analysis Date: | 2025-08-10 23:03:05 (9 months 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: | Adaware Software (7270356 CANADA INC.) |
| Status: | Valid |
The signature on liblzma.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%\avanquest\driver updater\application |
ThreatInfo has observed liblzma.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 liblzma.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 Mexico 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 liblzma.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
liblzma.dll is identified as pe for 64-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.
af6cb50029298984ec331f6c149be54a
6bf09e2c34661fc571a98d5729cf22ea
d91ec3166b33de4ef0ea248c7565b1ed
45ab9507f3b91365ca93fe858c03b923
3fb891f1a5461e72a9173cbeb44203bd
91e818256aa4934d69778f5d797cd547
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.WebCompanion
This report identifies liblzma.dll by MD5 64521bdd3b3af0af4508279b59772ab6. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.