GridinSoft Threat Intelligence

xul.dll threat report

Detected as Trojan.Heur! File reputation report
MD5 85023c29033a9c364af8301558739abc
Latest seen 2026-05-20 08:01:05 (a day ago)
First seen 2026-05-20 08:01:05 (a day ago)
Size 154 MB
Publisher Mozilla Foundation
Product Tor Browser

GridinSoft Anti-Malware detection

Detected by GridinSoft before you download

The current ThreatInfo record shows this exact file hash detected as Trojan.Heur!. 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
Trojan.Heur!
Recommended action
Scan and remove
Last analysis
2026-05-20 08:01:05 (a day ago)
File hash
85023c29033a9c364af8301558739abc
Download Anti-Malware

Why it matters

Why GridinSoft flags this file

Detection

GridinSoft identifies the sample as Trojan.Heur!.

Timeline

First seen 2026-05-20 08:01:05 (a day ago); latest analysis 2026-05-20 08:01:05 (a day ago).

Publisher context

Company metadata: Mozilla Foundation. Product metadata: Tor Browser.

Observed locations

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

  1. Compare the MD5 above with the file found on the device.
  2. Check whether the file appears in the observed locations or under one of the alternate names.
  3. Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present.

File context

xul.dll is a Windows file recorded in the ThreatInfo database. It is associated with Tor Browser. The reported company name is Mozilla Foundation. The current detection status is Trojan.Heur!, based on the latest analysis from 2026-05-20 08:01:05 (a day ago).

If xul.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 Trojan.Heur!.

File Details

Product Name: Tor Browser
Company Name: Mozilla Foundation
MD5: 85023c29033a9c364af8301558739abc
Size: 154 MB
First Published: 2026-05-20 08:01:05 (a day ago)
Latest Published: 2026-05-20 08:01:05 (a day ago)
Status: Trojan.Heur! (on last analysis)
Analysis Date: 2026-05-20 08:01:05 (a day ago)

Detection screenshot

xul.dll 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.

Common Places:

%sysdrive%\$recycle.bin\s-1-5-21-3636340982-1777556106-476430047-1001\$rz46ql3

ThreatInfo has observed xul.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 xul.dll across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country United States
Share 100.0%
Low High activity

The strongest geographic signal for this file is United States 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:

Windows 10 100.0%

The most common operating system signal for xul.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

xul.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.

Format pe
Architecture 64-bit
Subsystem Windows GUI
Entry point 0x000011e0
Image base 0x0000000180000000

PE Sections:

Sections 10
Raw data 162253312

Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.

.text 115365888 bytes · 71.1% of section data
Large raw data
MD5 9bc0a1483cc47798e6ed533bdda657c4
.rdata 27254272 bytes · 16.8% of section data
Large raw data
MD5 705fd598744aea6f3d4aff152e24f223
.buildid 512 bytes · 0.0% of section data
Uncommon name
MD5 94bc6a3aa0cf7fb5628b028d290eef1e
.data 872960 bytes · 0.5% of section data
MD5 a4604d01f39baaf9f17c640c7c2c39c4
.pdata 2744320 bytes · 1.7% of section data
MD5 a277a802a5951e7a8471a89f764e8d43
.rodata 15030784 bytes · 9.3% of section data
Large raw data
MD5 39451fcee16d2096a9469df2d084cf3f
.tls 1536 bytes · 0.0% of section data
MD5 2e91e85587456afc73442b170d85f1b3
mozbldid 512 bytes · 0.0% of section data
Uncommon name
MD5 487ba617b0eaedc00bdaee0e8fc2b22b
.rsrc 6144 bytes · 0.0% of section data
MD5 2c98c08069291a19429679bec98dc997
.reloc 976384 bytes · 0.6% of section data
MD5 67ad6d3fa74b6f3ebb7dba5287232ee5

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 Trojan.Heur!

This report identifies xul.dll by MD5 85023c29033a9c364af8301558739abc. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.

Download GridinSoft Anti-Malware Scan the device and confirm whether this exact hash is present. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with 85023c29033a9c364af8301558739abc.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan and remove the object if the same hash is found.