GridinSoft Threat Intelligence
OInstall.exe threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Crack.KMS. 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
- Crack.KMS
- Recommended action
- Scan and remove
- Last analysis
- 2026-05-22 18:01:07 (5 days ago)
- File hash
- cf4f1440d2faa4de3cf2f5c604ea48c0
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Crack.KMS, part of the Crack threat category.
License bypass tools and modified installers that commonly arrive with unwanted payloads. Related Crack reports help compare this file with nearby detections, publishers, and hashes.
First seen 2023-05-21 23:45:27 (3 years ago); latest analysis 2026-05-22 18:01:07 (5 days ago).
Product metadata: Office 2013-2021 C2R Install.
Signed by WZTeam. 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 Crack category for related samples and common context.
File context
OInstall.exe is a Windows file recorded in the ThreatInfo database. It is associated with Office 2013-2021 C2R Install. The current detection status is Crack.KMS, based on the latest analysis from 2026-05-22 18:01:07 (5 days ago). ThreatInfo groups this verdict with Crack reports for broader family-level investigation.
If OInstall.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 Crack.KMS.
File Details
| Product Name: | Office 2013-2021 C2R Install |
| MD5: | cf4f1440d2faa4de3cf2f5c604ea48c0 |
| Size: | 14 MB |
| First Published: | 2023-05-21 23:45:27 (3 years ago) |
| Latest Published: | 2026-05-22 18:01:07 (5 days ago) |
| Status: | Crack.KMS (on last analysis) | |
| Analysis Date: | 2026-05-22 18:01:07 (5 days 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: | WZTeam |
| Status: | Valid |
The signature on OInstall.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:
| %sysdrive%\programs |
| %temp%\rar$exb7796.39727 |
| %windir%\winterosv2023\menufiles |
| %desktop%\kms tools portable password 2023\kms tools portable 01.03.2023\programs |
| %mydoc%\cura office\kms tools portable 01.03.2023\programs |
| %profile%\all\kms tools portable\programs |
| %sysdrive%\ssd f wds500\file load\program 2023 |
| %desktop%\dossier kelly\programs |
| %sysdrive%\exe |
ThreatInfo has observed OInstall.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 OInstall.exe across 10 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is United States with 10.0% 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 OInstall.exe is Windows 10 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
OInstall.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.
d41d8cd98f00b204e9800998ecf8427e
836cc98820f9692544e327d735505b12
40f0c083e1dd6001e967ee1567ee8fa3
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 Crack.KMS
This report identifies OInstall.exe by MD5 cf4f1440d2faa4de3cf2f5c604ea48c0. It is part of the Crack 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.