GridinSoft Threat Intelligence

QMUdisk64_ev.sys file report

Under review File reputation report
MD5 b590952c2e1db0c5dd387b5cf7607f2b
Latest seen 2021-09-21 20:55:37 (4 years ago)
First seen 2019-05-30 03:34:17 (6 years ago)
Size 255 KB
Publisher Tencent
Product 电脑管家
Signed by Tencent Technology(Shenzhen) Company Limited;Microsoft Windows Hardware Compatibility Publisher

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 2019-05-30 03:34:17 (6 years ago); latest analysis 2021-09-21 20:55:37 (4 years ago).

Publisher context

Company metadata: Tencent. Product metadata: 电脑管家.

Digital signature

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

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

QMUdisk64_ev.sys is a Windows file recorded in the ThreatInfo database. It is associated with 电脑管家. The reported company name is Tencent. The current detection status is Undefined, based on the latest analysis from 2021-09-21 20:55:37 (4 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: 电脑管家
Company Name: Tencent
MD5: b590952c2e1db0c5dd387b5cf7607f2b
Size: 255 KB
First Published: 2019-05-30 03:34:17 (6 years ago)
Latest Published: 2021-09-21 20:55:37 (4 years ago)
Status: Undefined (on last analysis)
Analysis Date: 2021-09-21 20:55:37 (4 years ago)

Overview

Signed By: Tencent Technology(Shenzhen) Company Limited;Microsoft Windows Hardware Compatibility Publisher
Status: Valid

The signature on QMUdisk64_ev.sys 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%\tencent\qqpcmgr
%sysdrive%\电脑管家\qqpcmgr
%sysdrive%\software\tencent\qqpcmgr
%sysdrive%\qqpcmgr
%programfiles%\tencent\qqpcmgr\12.6.18848.203\filegroupupdate\sections
%sysdrive%\pr\qqpcmgr
%sysdrive%\腾讯管家2\新建文件夹\qqpcmgr

ThreatInfo has observed QMUdisk64_ev.sys 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 QMUdisk64_ev.sys across 14 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country China
Share 42.9%
Low High activity

The strongest geographic signal for this file is China with 42.9% 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 93.0%
Windows Server 2012 R2 2.8%
Windows Server 2008 R2 1.4%
Windows Server 2016 1.4%
Windows 7 1.4%

The most common operating system signal for QMUdisk64_ev.sys is Windows 10 with 93.0% 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

QMUdisk64_ev.sys is identified as pe for 64-bit systems. The subsystem is Native. 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 Native
Entry point 0x0003f064
Image base 0x0000000000010000

PE Sections:

Sections 7
Raw data 242176

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

.text 180224 bytes · 74.4% of section data
MD5 018d5f114ed3b8698d7d2f70cf04d826
.rdata 20480 bytes · 8.5% of section data
MD5 bfb3bb4adee27b63e01de187ec05f06c
.data 29696 bytes · 12.3% of section data
MD5 b9dba6c6a32341e629f1fbb3c15d3d76
.pdata 5120 bytes · 2.1% of section data
MD5 81102c6d1dc3a698d9541351653c47bd
INIT 5120 bytes · 2.1% of section data
Uncommon name
MD5 9ea13e8f5e9f420b2ba7e62ab430c1b8
.rsrc 1024 bytes · 0.4% of section data
MD5 2a2b78009b9afba269079f521e68cd07
.reloc 512 bytes · 0.2% of section data
MD5 c55dea02ec1be9cccf1c31a28ef29ee1

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 b590952c2e1db0c5dd387b5cf7607f2b.
  • 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.