GridinSoft Threat Intelligence

WeChatAppHost.dll file report

Under review File reputation report
MD5 a3e0c7d6aa3de92aedad90a9c5b8e5af
Latest seen 2021-02-22 04:38:16 (5 years ago)
First seen 2020-02-19 20:03:48 (6 years ago)
Size 1 MB
Publisher The Tencent Authors
Product Mini Programs
Signed by Tencent Technology(Shenzhen) Company Limited

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Category context

Potentially unwanted programs, bundlers, installers, and utilities with intrusive behavior. Related PUP reports help compare this file with nearby detections, publishers, and hashes.

Timeline

First seen 2020-02-19 20:03:48 (6 years ago); latest analysis 2021-02-22 04:38:16 (5 years ago).

Publisher context

Company metadata: The Tencent Authors. Product metadata: Mini Programs.

Digital signature

Signed by Tencent Technology(Shenzhen) Company Limited. The signature is not reported as trusted and valid, which can indicate tampering, repackaging, or copied publisher data.

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

WeChatAppHost.dll is a Windows file recorded in the ThreatInfo database. It is associated with Mini Programs. The reported company name is The Tencent Authors. The current detection status is Undefined, based on the latest analysis from 2021-02-22 04:38:16 (5 years ago). ThreatInfo groups this verdict with PUP reports for broader family-level investigation.

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: Mini Programs
Company Name: The Tencent Authors
MD5: a3e0c7d6aa3de92aedad90a9c5b8e5af
Size: 1 MB
First Published: 2020-02-19 20:03:48 (6 years ago)
Latest Published: 2021-02-22 04:38:16 (5 years ago)
Status: Undefined (on last analysis)
Analysis Date: 2021-02-22 04:38:16 (5 years ago)

Overview

Signed By: Tencent Technology(Shenzhen) Company Limited
Status: Invalid (digital signature could be stolen or file could be patched)

The signature on WeChatAppHost.dll is not reported as trusted and valid. Invalid or suspicious signature data can indicate tampering, repackaging, or an unrelated file using copied publisher information.

Common Places:

%programfiles%\tencent
%appdata%\tencent\wxwork\upgrade

ThreatInfo has observed WeChatAppHost.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 WeChatAppHost.dll across 14 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Hong Kong
Share 31.6%
Low High activity

The strongest geographic signal for this file is Hong Kong with 31.6% 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 87.2%
Windows 7 10.3%
Windows 8.1 2.6%

The most common operating system signal for WeChatAppHost.dll is Windows 10 with 87.2% 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

WeChatAppHost.dll is identified as pe for 32-bit systems. The subsystem is Windows CUI. 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 CUI
Entry point 0x00095762
Image base 0x10000000

PE Sections:

Sections 8
Raw data 1571840

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

.text 755200 bytes · 48.0% of section data
MD5 2550d81efa56bb581fd023002f6e7893
.rdata 99328 bytes · 6.3% of section data
MD5 645c18ddca577be7df30bbd1451e0c28
.data 6656 bytes · 0.4% of section data
MD5 648624281e1979c10aa5e2e742f15197
.gfids 1024 bytes · 0.1% of section data
Uncommon name
MD5 e22e6d35ac6288d6af1791857d3fa736
.tls 512 bytes · 0.0% of section data
MD5 1f354d76203061bfdd5a53dae48d5435
.vmp0 685056 bytes · 43.6% of section data
Uncommon name
MD5 55c731e9f3e6756a4e2d5d5f70d6c450
.reloc 22528 bytes · 1.4% of section data
MD5 596c790fd44c021d83f45e8a3f8c8530
.rsrc 1536 bytes · 0.1% of section data
MD5 2d0846b2eeadb9b96470a5e501e2b7ef

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 a3e0c7d6aa3de92aedad90a9c5b8e5af.
  • 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. Use the PUP category to compare similar reports.