OInstall.exe threat report

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This report summarizes the file identity, detection status, publisher metadata, observed locations, and technical indicators for OInstall.exe. ThreatInfo currently classifies this sample as Crack.KMS.

GridinSoft Anti-Malware detection

GridinSoft already detects this file

The latest ThreatInfo record shows OInstall.exe detected as Crack.KMS. You can download GridinSoft Anti-Malware to scan the system and remove this detection if the file is present on your device.

Detection name

Crack.KMS

Last analysis

2026-04-26 23:01:07 (a week ago)

File hash

d9679c5ffb93cc8ebbde5a82fecb5326

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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 2026-04-26 23:01:07 (a week ago).

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

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

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.

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.

The strongest geographic signal for this file is Barbados with 18.2% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.

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 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 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.