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Verdict Safe

Analyzed , 1 month ago

Is session.lock safe? Yes, no threats found.

Plain 3-byte text file with zero detections across 75 engines and years of benign history.

Strong evidence · Widely seen for a long time, and nothing harmful found.

Open it as usual if it came from the official source

No action required; the file is harmless.

Good practice2 tips

We found nothing harmful in this file.

  1. Open it only if you trust the person or website it came from.

  2. Keep your security software and system updates switched on.

No scanner can promise a file is 100% safe.

Why we think so

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session.lock: Safe — MalwareTips file scan

The link always shows the latest result for this exact file (its SHA-256 fingerprint).

Reads the latest antivirus results for this file's hash. Nothing is uploaded.

Antivirus results

0 of 60 flagged

  • Flagged 0
  • No detection 60
  • No result 15
Filesession.lock3 BSHA-256 51643361c79e…f466cc
  • Code signing Not applicable
  • Test run Not applicable
  • First seen 6y ago
None of the 60 antivirus engines that checked it flag it.

Chapter 02

Why we think so

0 points against it and 3 in its favour, checked against the scan evidence.

MT AI Engine · Verdict analysis

The reasoning behind this verdict

Analyst conclusion

No engine flagged the file. It is a tiny, long-standing text artifact submitted by hundreds of sources since 2020 with no malicious indicators.

6 sources checked · 4 complete · 2 not needed or not applicable. See every source

Chapter 03

Technical details

None of the 60 antivirus engines that checked it flag it.

Sources checked

Every check behind this verdict

6 sources checked · 4 complete · 2 not needed or not applicable. Complete means the check returned a usable result; it does not mean the file is safe.

SourceStatusResultChecked
Antivirus enginesVirusTotal · 75 enginesCompletePositive signal: 0 of 60 engines flagged it · 15 gave no result Details for antivirus engines
Sandbox runVirusTotal sandboxesNot applicableSandboxes do not run this kind of fileNo date recorded
Contacted hostsMalwareTips URL scannerNot neededNo sandbox run, so there were no contacted hosts to checkNo date recorded
Signature rulesYARAify community rules + MalwareTips rulesCompleteNo rule matched
Malware sample databaseabuse.ch MalwareBazaarCompleteNot listed
Known-software referenceCIRCL hashlookupCompleteNo match

File fingerprint

Last analyzed
Sep 4, 2026, 3:31 AM UTC
SHA-256
51643361c79ecaef25a8de802de24f570ba25d9c2df1d22d94fade11b4f466cc
SHA-1
2686137311c038a99622242fdb662b88c221c08d
MD5
48856faf4534a876adeadc72aec53cb2

About this file

session.lock is a Text file of 3 B.

Type and size
Text · 3 B
Signer
Not applicable
First seen
Jun 26, 2020On VirusTotal.
Submitted by
554 distinct sources

First scanned

Chapter 04

Questions & answers

Short answers to the 6 questions people ask most about this file.

Is session.lock safe?
We found nothing harmful in session.lock. None of the 60 antivirus engines that checked it flag it. Open it only if you trust the person or website it came from.
What is session.lock?
session.lock is a file, about 3 bytes. VirusTotal first saw it on Jun 26, 2020.
How many antivirus engines detected session.lock?
None of the 60 antivirus engines that checked it flag session.lock. That is a good sign, but not proof, so we also weigh who made it, how widely it is used and what it did in a test run.
What is the SHA-256 hash of session.lock?
The SHA-256 fingerprint of session.lock is 51643361c79ecaef25a8de802de24f570ba25d9c2df1d22d94fade11b4f466cc, and its MD5 is 48856faf4534a876adeadc72aec53cb2. Two files with the same SHA-256 are identical, so use it to check you have exactly this file, not just one with the same name.
Is it safe to open session.lock?
We found nothing harmful in session.lock. The main caveat is where you got it: attackers sometimes spread malware under the name of real software, so get it from the official website. If your own antivirus warns about it, check the source before you ignore the warning.
How up to date is this analysis of session.lock?
This report reflects the scan on Sep 4, 2026. A file's fingerprint never changes, but antivirus engines keep learning, so a rating can change later. To get a newer result, scan the file again: we refresh the antivirus results when the saved ones are out of date.
Chapter 06

Community

Member reviews and reports for this exact file hash.

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This report and its SHA-256 fingerprint are public, so the next person who checks the same file gets an instant answer; documents and images are listed by type instead of their file name. A file we had not seen before is uploaded to VirusTotal, whose security partners and subscribers can download it; MalwareTips deletes its own copy after the scan. If you ran this file and are worried, scan your device with up-to-date security software.