File scan report
Verdict Safe
Is dot
Microsoft-signed .NET Framework 4.0 installer with zero engine detections and strong historical signer reputation.
Read the whole reasonShow less
Strong evidence · A verified publisher signature, and no engine flags it.
Treat as a legitimate Microsoft .NET Framework 4.0 installer; no further security action needed.
Good practice2 tips
We found nothing harmful in this file.
Install it only if it came from the developer's own website or an official app store.
Keep your antivirus and Windows updates switched on.
No scanner can promise a file is 100% safe.
Reads the latest antivirus results for this file's hash. Nothing is uploaded.
Antivirus results
0 of 71 flagged
- Flagged 0
- No detection 71
- No result 4
- Code signing Microsoft Corporation
- Test run Completed
- First seen 16y ago
Chapter 02
Why we think so
0 points against it and 4 in its favour, checked against the scan evidence.
The reasoning behind this verdict
Zero of the 71 antivirus engines that checked it flagged the file. It is signed by Microsoft Corporation, matches a trusted-publisher record, and shows 4 of 5 similar hashes previously rated safe under the same signer. The file is a common, old .NET redistributable installer.
The complete absence of malicious detections across 75 engines, including 17 major antivirus engines, combined with verified Microsoft code-signing, places the sample firmly in the benign-signed-installer pattern. Historical signer data shows 8/9 prior samples rated safe, and four of five similar-hash matches under the same signer also returned safe verdicts with the same reason code. Prevalence data (widely seen and long established, nearly 90 k submissions) further supports legitimate commodity software. Sandbox artefacts that triggered rule-based rules are consistent with a .NET bootstrapper touching the Windows password store and system services during installation; no malicious files it created or sandbox verdicts were recorded.
What We Detected
75-engine scan returned zero malicious or suspicious labels. The executable is signed by Microsoft Corporation with a verified certificate issued 19 March 2010. Our trusted-publisher list explicitly includes Microsoft, and the file matches the expected .NET Framework 4.0 redistributable (dotNetFx40_Full_setup.exe).
Threat Behavior
One sandbox recorded typical installer behaviour: extraction of bitmap resources, creation of temporary files, and service-process interaction. Four MITRE techniques flagged by rules (T1005, T1055, T1543.003, T1562.001) map to expected bootstrapper actions rather than attacker tradecraft. no complete contacted-host reputation result was available, IPs, or programs it started were observed.
What To Do Now
The file can be executed or distributed without elevated concern. Keep Windows Defender and other security software enabled; no additional action is required.
Where this verdict could be wrong2 caveats
- The signer-history record shows 1/9 malicious historical sample for Microsoft Corporation — single outlier against 8/9 safe.
- triggeredHeuristics fired 'one of our behaviour rules' and 'one of our behaviour rules' on the Windows password store and svchost activity — sandbox artefacts from legitimate .NET installer bootstrapper.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Microsoft Corporation code signature verified
- 0/71 engines flagged malicious
- widely seen and long established prevalence with nearly 90 k submissions
- 4 of 5 similar signer-matched hashes previously rated safe
6 sources checked · 5 complete · 1 partial. See every source
Chapter 03
What it did in our test
It ran in our isolated test environment; no test environment rated what it did as risky.
Test run summary
Capture complete- 23sandbox rule tags
- 8spawned processes
- 4network contacts
- 40filesystem & mutex artifacts
Includes 23 mapped techniques, every process, file, registry and network entry and 10 dropped files.
Show the technical evidenceChapter 04
Technical details
None of the 71 antivirus engines that checked it flag it; signed by Microsoft Corporation.
Sources checked
Every check behind this verdict
6 sources checked · 5 complete · 1 partial. Complete means the check returned a usable result; it does not mean the file is safe.
File fingerprint
- Last analyzed
- Aug 26, 2026, 7:53 PM UTC
- SHA-256
fa1afff978325f8818ce3a559d67a58297d9154674de7fd8eb03656d93104425- SHA-1
06becadb92a5fcca2529c0b93687c2a0c6d0d610- MD5
53406e9988306cbd4537677c5336aba4
About this file
dotNetFx40_Full_setup.exe is a Win32 EXE file of 889.4 kB.
- Type and size
- Win32 EXE · 889.4 kB
- Signer
- Microsoft CorporationValid code signature.
- First seen
- Apr 13, 2010On VirusTotal.
- Submitted by
- 3,687 distinct sources
- Packer
- None detected
- Entropy
- 8.00 of 8
First scanned Updated
Includes every engine result (75), 5 matched signature rules, PE section entropy and packers and how widely the file has been seen.
Show the technical evidenceChapter 05
Questions & answers
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Community
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