GridinSoft Threat Intelligence

QRCode.dll file report

Under review File reputation report
MD5 5a80b85745478756ed68c26fc55f695f
Latest seen 2021-10-12 20:33:19 (4 years ago)
First seen 2017-05-26 09:05:51 (9 years ago)
Size 92 KB
Publisher Tencent Inc.
Product QQ浏览器
Signed by Tencent Technology(Shenzhen) Company Limited

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2017-05-26 09:05:51 (9 years ago); latest analysis 2021-10-12 20:33:19 (4 years ago).

Publisher context

Company metadata: Tencent Inc.. Product metadata: QQ浏览器.

Digital signature

Signed by Tencent Technology(Shenzhen) Company Limited. The signature is reported as valid, but signed files can still be bundled or abused.

Aliases

This hash has appeared under multiple file names, which can happen with repackaging, bundling, or deliberate renaming.

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. Use the hash and metadata below to verify the exact file identity.
  2. Review publisher, signature, paths, and PE details for inconsistencies.
  3. Run a local scan if the file appears unexpectedly or starts with Windows.

File context

QRCode.dll is a Windows file recorded in the ThreatInfo database. It is associated with QQ浏览器. The reported company name is Tencent Inc.. The current detection status is Undefined, based on the latest analysis from 2021-10-12 20:33:19 (4 years ago).

ThreatInfo does not have a final classification for this file yet. Use the technical details below to compare the hash, size, signature, and observed locations with the copy found on your device.

File Details

Product Name: QQ浏览器
Company Name: Tencent Inc.
MD5: 5a80b85745478756ed68c26fc55f695f
Size: 92 KB
First Published: 2017-05-26 09:05:51 (9 years ago)
Latest Published: 2021-10-12 20:33:19 (4 years ago)
Status: Undefined (on last analysis)
Analysis Date: 2021-10-12 20:33:19 (4 years ago)

Overview

Signed By: Tencent Technology(Shenzhen) Company Limited
Status: Valid

The signature on QRCode.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:

%sysdrive%\system volume information\_restore{f14a1c2c-a641-43f9-a293-b0cb265a4677}\rp1244
%programfiles%\tencent\qqbrowser\9.6.11125.400
%temp%\12au1afe7f95\bin
%programfiles%\tencent\qqbrowser\9.6.11346.400
%temp%\12au9c524f\bin
%programfiles%\tencent\qqbrowser\9.5.10801.400
%programfiles%\tencent\qqbrowser\9.5.10218.400
%programfiles%\tencent\qqbrowser\9.5.10937.400
%localappdata%\tencent\qqbrowser\user data\default\extensions\llilejmacjghpgeenjonaggofdjobdhb\9.0.0.3_0
%programfiles%\tencent\qqbrowser\9.6.11681.400

ThreatInfo has observed QRCode.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.

File Names:

2 observed names
A0428971.dll QRCode.dll

This hash has been seen with multiple file names. Alternate names can appear when software is updated, copied between folders, packed by an installer, or deliberately renamed to avoid recognition. Compare the exact MD5 above before assuming two names refer to the same file.

Geographic signal

Observed country distribution

ThreatInfo has seen QRCode.dll across 23 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country China
Share 37.9%
Low High activity

The strongest geographic signal for this file is China with 37.9% 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 58.6%
Windows 7 28.4%
Windows 8.1 4.1%
Windows Server 2012 R2 3.6%
Windows XP 3.0%
Windows Server 2003 1.2%
Windows Server 2008 R2 0.6%
Windows Server 2016 0.6%

The most common operating system signal for QRCode.dll is Windows 10 with 58.6% 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

QRCode.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.

Format pe
Architecture 32-bit
Subsystem Windows GUI
Entry point 0x00004c0d
Image base 0x44bc0000

PE Sections:

Sections 5
Raw data 87552

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

.text 54784 bytes · 62.6% of section data
MD5 4b57663ecc5230015e7100c6b39a2ed0
.rdata 22528 bytes · 25.7% of section data
MD5 b4c45005f7e9e4ccee81e4ba73d1c727
.data 4608 bytes · 5.3% of section data
MD5 1471cb278241aaaa126197756928e67d
.rsrc 1536 bytes · 1.8% of section data
MD5 f01b99c046a394e2f59fe1020f6d893e
.reloc 4096 bytes · 4.7% of section data
MD5 4f669901097c1a487cce76d7b04d9fc2

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

This file is still under review

ThreatInfo has not assigned a final verdict yet. Compare the file hash, location, signature, and publisher before trusting the file on a production system.

Scan with GridinSoft Anti-Malware Use a local scan if the file origin or behavior is unclear. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with 5a80b85745478756ed68c26fc55f695f.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan if the source, path, or behavior looks unusual.