GridinSoft Threat Intelligence
InstStub.exe file report
Why it matters
Evidence available for this file
Latest status is clean for this hash.
First seen 2025-12-07 23:06:18 (5 months ago); latest analysis 2025-12-07 23:06:18 (5 months ago).
Company metadata: Symantec Corporation. Product metadata: Norton Security Scan.
Signed by Symantec Corporation. ThreatInfo marks this publisher as trusted for this record.
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
- Confirm the hash and publisher match the expected software.
- Review the observed locations and signature information below.
- Rescan if the file was downloaded from an unknown source or appears in an unusual path.
File context
InstStub.exe is a Windows file recorded in the ThreatInfo database. It is associated with Norton Security Scan. The reported company name is Symantec Corporation. The current detection status is Clean, based on the latest analysis from 2025-12-07 23:06:18 (5 months ago).
This record is currently marked as clean, but file reputation can depend on the exact path, hash, and source. Compare the MD5 and publisher data below with the file on your system.
File Details
| Product Name: | Norton Security Scan |
| Company Name: | Symantec Corporation |
| MD5: | eccbff701cb37ac9abb045855543940e |
| Size: | 1 MB |
| First Published: | 2025-12-07 23:06:18 (5 months ago) |
| Latest Published: | 2025-12-07 23:06:18 (5 months ago) |
| Status: | Clean (on last analysis) | |
| Analysis Date: | 2025-12-07 23:06:18 (5 months ago) |
Overview
| Signed By: | Symantec Corporation |
| Status: | Trusted Publisher |
ThreatInfo marks this publisher as trusted for this record, but the file hash and source should still match the expected software distribution.
Common Places:
| %programfiles%\nortoninstaller\{397e31aa-0d78-4649-a01c-339d73a2ed35}\nss\licensetype |
ThreatInfo has observed InstStub.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 InstStub.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 United States 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 InstStub.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
InstStub.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.
68d83cbe9987219771873eb340a92378
78dfa6e9ffe3c931fb58b96eed942003
2cd99c2d92006776c8ca75c2175c524f
e4900888a9cdacd5366b7020b451c439
391d49af05a441e3f0bfdbae6dca2f58
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 hash is currently recorded as clean
Use the MD5, publisher, signature, and observed paths in this report to verify that the file on your device is the same copy described here.