GridinSoft Threat Intelligence

xul.dll threat report

Detected as Trojan.Heur! File reputation report
MD5 1c02b7530f585b10181f8683fedc2904
Latest seen 2026-01-15 23:01:18 (4 months ago)
First seen 2026-01-13 23:02:00 (4 months 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
2026-01-15 23:01:18 (4 months ago)
File hash
1c02b7530f585b10181f8683fedc2904
Download Anti-Malware

Why it matters

Why GridinSoft flags this file

Detection

GridinSoft identifies the sample as Trojan.Heur!.

Timeline

First seen 2026-01-13 23:02:00 (4 months ago); latest analysis 2026-01-15 23:01:18 (4 months 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 2026-01-15 23:01:18 (4 months 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: 1c02b7530f585b10181f8683fedc2904
Size: 154 MB
First Published: 2026-01-13 23:02:00 (4 months ago)
Latest Published: 2026-01-15 23:01:18 (4 months ago)
Status: Trojan.Heur! (on last analysis)
Analysis Date: 2026-01-15 23:01:18 (4 months 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:

%desktop%\tor browser
%sysdrive%\portable apps\tor browser
%profile%\downloads\tor browser 15.0.4 (x64)\tor browser 15.0.4 (x64)\app

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 3 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Brazil
Share 33.3%
Low High activity

The strongest geographic signal for this file is Brazil with 33.3% 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 162093056

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

.text 115237888 bytes · 71.1% of section data
Large raw data
MD5 2efe7305f5effb31a702a43174196627
.rdata 27226112 bytes · 16.8% of section data
Large raw data
MD5 7b2f5cbb72ef1ed3b133bf4d3280f106
.buildid 512 bytes · 0.0% of section data
Uncommon name
MD5 32a1ede5037a406c0ad84f5761550406
.data 872960 bytes · 0.5% of section data
MD5 112dbc8a0a3f412c688bb964ea281eac
.pdata 2740736 bytes · 1.7% of section data
MD5 9ff6245eedc978cb0f31685d4392034f
.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 cd08011ea9d4c95f176a8015e5a2f9ce
.rsrc 6144 bytes · 0.0% of section data
MD5 19123741c91d1ca9eaac5192a08887fa
.reloc 975872 bytes · 0.6% of section data
MD5 ff30130916eac1a85f9230204927ffb9

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 1c02b7530f585b10181f8683fedc2904. 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 1c02b7530f585b10181f8683fedc2904.
  • 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.