GridinSoft Threat Intelligence
winsysmaintenance.exe threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Trojan.Gen. 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.Gen
- Recommended action
- Scan and remove
- Last analysis
- 2025-06-30 23:00:34 (11 months ago)
- File hash
- 90a944532ac7d92a6f542fb01cf472ed
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Trojan.Gen, part of the Trojan threat category.
Malware disguised as legitimate software or delivered through deceptive packaging. Related Trojan reports help compare this file with nearby detections, publishers, and hashes.
First seen 2017-10-02 21:01:50 (8 years ago); latest analysis 2025-06-30 23:00:34 (11 months ago).
Company metadata: Zhuhai Kingsoft Office Software Co.,Ltd. Product metadata: 金山词霸辅助程序.
Signed by Zhuhai Kingsoft Office Software Co.,Ltd. The signature is reported as valid, but signed files can still be bundled or abused.
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
- Compare the MD5 above with the file found on the device.
- Check whether the file appears in the observed locations or under one of the alternate names.
- Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present. Review the Trojan category for related samples and common context.
File context
winsysmaintenance.exe is a Windows file recorded in the ThreatInfo database. It is associated with 金山词霸辅助程序. The reported company name is Zhuhai Kingsoft Office Software Co.,Ltd. The current detection status is Trojan.Gen, based on the latest analysis from 2025-06-30 23:00:34 (11 months ago). ThreatInfo groups this verdict with Trojan reports for broader family-level investigation.
If winsysmaintenance.exe 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.Gen.
File Details
| Product Name: | 金山词霸辅助程序 |
| Company Name: | Zhuhai Kingsoft Office Software Co.,Ltd |
| MD5: | 90a944532ac7d92a6f542fb01cf472ed |
| Size: | 941 KB |
| First Published: | 2017-10-02 21:01:50 (8 years ago) |
| Latest Published: | 2025-06-30 23:00:34 (11 months ago) |
| Status: | Trojan.Gen (on last analysis) | |
| Analysis Date: | 2025-06-30 23:00:34 (11 months ago) |
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.
Overview
| Signed By: | Zhuhai Kingsoft Office Software Co.,Ltd |
| Status: | Valid |
The signature on winsysmaintenance.exe 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:
| %appdata%\maintenance |
| %appdata% |
| %profile%\dministrator\application data |
| %profile%\ser\application data |
ThreatInfo has observed winsysmaintenance.exe 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 winsysmaintenance.exe across 25 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is China with 65.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for winsysmaintenance.exe is Windows 10 with 72.1% 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
winsysmaintenance.exe 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.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
846c6cec68a7b36ad396783eb0eb65c3
d9b844d450d7ac4b4f0ba0699659dbcf
4649a18bcc9800be32153b71cde1ce40
81dc85486a9020cf9f97c9e623b0f7af
d61135e5d062d59750a3b9d7337e37cd
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.Gen
This report identifies winsysmaintenance.exe by MD5 90a944532ac7d92a6f542fb01cf472ed. It is part of the Trojan report group. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.