GridinSoft Threat Intelligence

ComputerZ12_x64.dll.quarantined file report

Under review File reputation report
MD5 72d82d313f563949ac6d969b74c39a51
Latest seen 2024-09-08 23:01:08 (2 years ago)
First seen 2017-08-22 14:05:50 (8 years ago)
Size 764 KB
Publisher www.ludashi.com
Product 鲁大师
Signed by Qihoo 360 Software (Beijing) Company Limited

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2017-08-22 14:05:50 (8 years ago); latest analysis 2024-09-08 23:01:08 (2 years ago).

Publisher context

Company metadata: www.ludashi.com. Product metadata: 鲁大师.

Digital signature

Signed by Qihoo 360 Software (Beijing) 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

ComputerZ12_x64.dll.quarantined is a Windows file recorded in the ThreatInfo database. It is associated with 鲁大师. The reported company name is www.ludashi.com. The current detection status is Undefined, based on the latest analysis from 2024-09-08 23:01:08 (2 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: 鲁大师
Company Name: www.ludashi.com
MD5: 72d82d313f563949ac6d969b74c39a51
Size: 764 KB
First Published: 2017-08-22 14:05:50 (8 years ago)
Latest Published: 2024-09-08 23:01:08 (2 years ago)
Status: Undefined (on last analysis)
Analysis Date: 2024-09-08 23:01:08 (2 years ago)

Overview

Signed By: Qihoo 360 Software (Beijing) Company Limited
Status: Valid

The signature on ComputerZ12_x64.dll.quarantined 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%\ldslite\utils
%programfiles%\ludashi\utils
%programfiles%\ludashi\update
%programfiles%\ludashi
%programfiles%\ldslite
%programfiles%\ludashi\ludashi

ThreatInfo has observed ComputerZ12_x64.dll.quarantined 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
ComputerZ12_x64.dll ComputerZ12_x64.dll.quarantined

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.

Geography:

19 observed countries
41.0%
34.3%
7.9%
4.5%
2.2%
2.2%
1.1%
0.6%
0.6%
0.6%
0.6%
0.6%
0.6%
0.6%
0.6%
0.6%
0.6%
0.6%
0.6%

The strongest geographic signal for this file is Taiwan with 41.0% 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 71.5%
Windows 7 23.5%
Windows XP 2.2%
Windows Server 2008 R2 1.1%
Windows 8.1 1.1%
Windows 8 0.6%

The most common operating system signal for ComputerZ12_x64.dll.quarantined is Windows 10 with 71.5% 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

ComputerZ12_x64.dll.quarantined 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 0x00052b3c
Image base 0x0000000180000000

PE Sections:

Sections 6
Raw data 764928

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

.text 480768 bytes · 62.9% of section data
MD5 fcf2a38907d75d99f2fe4d15a721f731
.rdata 150528 bytes · 19.7% of section data
MD5 3004b25f2400231914d21bfb996065af
.data 27136 bytes · 3.5% of section data
MD5 61199543ffd81ed46e01b1e452616428
.pdata 30720 bytes · 4.0% of section data
MD5 810946c9da19fc3178eceacc3c75071f
.rsrc 69632 bytes · 9.1% of section data
MD5 aa684829e2a8900de38ca05377ac5ba8
.reloc 6144 bytes · 0.8% of section data
MD5 46d8ecbece8588b3c9d301cd0af9e590

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 72d82d313f563949ac6d969b74c39a51.
  • 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.