GridinSoft Threat Intelligence
WO4.exe threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as PUP.WinOptimizer. 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
- PUP.WinOptimizer
- Recommended action
- Scan and remove
- Last analysis
- 2026-05-13 16:56:22 (2 weeks ago)
- File hash
- 1d5f5b1ae332a1698598d5566f93b291
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as PUP.WinOptimizer, part of the PUP threat category.
Potentially unwanted programs, bundlers, installers, and utilities with intrusive behavior. Related PUP reports help compare this file with nearby detections, publishers, and hashes.
First seen 2026-05-13 16:56:22 (2 weeks ago); latest analysis 2026-05-13 16:56:22 (2 weeks ago).
Signed by ashampoo GmbH & Co. KG. 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 PUP category for related samples and common context.
File context
WO4.exe is a Windows file recorded in the ThreatInfo database. The current detection status is PUP.WinOptimizer, based on the latest analysis from 2026-05-13 16:56:22 (2 weeks ago). ThreatInfo groups this verdict with PUP reports for broader family-level investigation.
If WO4.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 PUP.WinOptimizer.
File Details
| MD5: | 1d5f5b1ae332a1698598d5566f93b291 |
| Size: | 4 MB |
| First Published: | 2026-05-13 16:56:22 (2 weeks ago) |
| Latest Published: | 2026-05-13 16:56:22 (2 weeks ago) |
| Status: | PUP.WinOptimizer (on last analysis) | |
| Analysis Date: | 2026-05-13 16:56:22 (2 weeks 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: | ashampoo GmbH & Co. KG |
| Status: | Valid |
The signature on WO4.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:
| %programfiles%\ashampoo |
ThreatInfo has observed WO4.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 WO4.exe across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Algeria with 100.0% 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 WO4.exe is Windows 7 with 100.0% 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
WO4.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.
d4d6072069445afb0951aeeda568c125
5c6dc032305ea7216985bac68c986051
13dfefa0b02ed6e5ca3e89593456d4ea
d41d8cd98f00b204e9800998ecf8427e
311989c958744c1c8a33423bc6855007
d41d8cd98f00b204e9800998ecf8427e
9383f588ef4d1bafdbf3e26ee8383f0f
6d002e115e7a24308d0129ba66b50128
44348739753d930a40b3b8b32908191e
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 PUP.WinOptimizer
This report identifies WO4.exe by MD5 1d5f5b1ae332a1698598d5566f93b291. It is part of the PUP 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.