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Verdict Suspicious

Analyzed , 13 days ago

Is BlazerBrowserSetup.exe safe? Treat it as suspicious.

Only Malwarebytes flags this signed browser installer, specifically as potentially unwanted software, while runtime technique mappings and absent publisher history justify caution.

Read the whole reasonShow less

Why Suspicious? One antivirus engine (Malwarebytes) flags it; nothing else confirms it.

Limited evidence · One sign points to a problem; nothing else confirms it.

Don't run it until you know where it came from

If it came from a link, an attachment or a stranger, delete it.

What to do now4 steps

Some signs point to a problem, but nothing confirms it is harmful. Treat it with caution.

What to do

  1. Don't run it unless you're sure where it came from.

  2. Check where you got it: an unexpected attachment, a link someone sent you or a re-upload is a red flag.

  3. If you can't confirm where it came from, delete it. If you need the program, download it again from the publisher's own website.

If you already ran it

  1. Stop using it, run a full scan with your antivirus and watch for unexpected behavior or security alerts.

Not sure what to do?

Ask the MalwareTips community before you run it. If you already ran it, follow the cleanup guide.

Paste this report's link in your topic so helpers can see what was found.

Why we think so

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BlazerBrowserSetup.exe: Suspicious — 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

1 of 71 flagged

  • Flagged 1
  • No detection 70
  • No result 4
FileBlazerBrowserSetup.exe1.1 MBSHA-256 b3191d884060…abdb52
  • Code signing BlazerBrowser.com LLC
  • Test run Completed
  • First seen 27d ago
1 of the 71 antivirus engines that checked it flags it (Malwarebytes).

Chapter 02

Why we think so

4 points against it and 5 in its favour, checked against the scan evidence.

MT AI Engine · Verdict analysis

The reasoning behind this verdict

Analyst conclusion

Malwarebytes alone flags the installer as PUP.Optional.BlazerBrowser; none of the 75-engine network’s major antivirus engines detected it. Its signature and covered host checks are reassuring, but potentially unwanted distribution reports, three offensive technique mappings, and the publisher’s absent history make installation inadvisable unless intentionally sourced.

Where this verdict could be wrong3 caveats
  • Malwarebytes identifies this browser as potentially unwanted and documents cases where it was installed through misleading download prompts.
  • The runtime mapping includes process injection and security-control impairment techniques, although no injected target or malicious sandbox determination corroborates them.
  • The verified publisher has no historical sample record in the available signer statistics, so the certificate provides identity but limited reputation assurance.

These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.

6 sources checked · all complete. 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
  • 26sandbox rule tags
  • 2spawned processes
  • 10network contacts
  • 12filesystem & mutex artifacts

What the test run showed

What the file did on a test computer

Confirmed in the test run

  • Moderate concern: Contains packed or scrambled code that is harder to inspect (common in installers too).

  • Moderate concern: Ran commands or a script on the test computer.

  • Moderate concern: Downloaded a file during the test run.

  • Moderate concern: Unpacked hidden content while it ran.

  • Moderate concern: Checked whether it was running on a test computer.

  • Note: Read the user name of the test computer.

  • Note: Listed the programs running on the test computer.

Sandbox labels we could not confirm (common in safe files too)

  • Not confirmed: A sandbox rule tagged this run as code injection, but no injected program was recorded.

  • Not confirmed: A sandbox rule tagged this run as weakening security settings; no setting change was recorded.

  • Not confirmed: A sandbox rule tagged this run as changing how Windows loads code; nothing confirms it.

  • Not confirmed: A sandbox rule tagged this run as loading code in memory; nothing confirms it.

This file was run on a test computer (a sandbox), not on yours. Labels we could not confirm are listed so you can see them, but they are not treated as evidence against the file.

Recorded behavior

What happened in the test

Grouped by step. The order is not a timeline.

Seen in the test runWorked out from other results

  1. Input file

    The submitted object

    1
    1. Evidence 1 of 7: FileSeen in the test run

      BlazerBrowserSetup.exe

      b3191d8840602d21bd4904b006f98352b4fdf1b59c0dc22ce8f12e1013abdb52

      Uploaded file

  2. Processes

    What ran

    2
    1. Evidence 2 of 7: ProcessSeen in the test run

      file.exe

      "C:\Users\<USER>\Desktop\file.exe"

      Test run
    2. Evidence 3 of 7: ProcessSeen in the test run

      program.exe

      "C:\Users\user\Desktop\program.exe"

      Test run
    3. +1 more recorded observation

  3. Files

    Created or changed

    2
    1. Evidence 4 of 7: Written fileSeen in the test run

      blazer_debug.txt

      C:\Users\<USER>\AppData\Local\Temp\blazer_debug.txt

      Test run
    2. Evidence 5 of 7: Written fileSeen in the test run

      blazer_installer.log

      C:\Users\<USER>\AppData\Local\Temp\blazer_installer.log

      Test run
    3. +1 more recorded observation

  4. Network

    Hosts contacted

    2
    1. Evidence 6 of 7: Contacted hostSeen in the test run

      api.get-blazer.com

      Contacted during the test run.

      Test run
    2. Evidence 7 of 7: Contacted hostSeen in the test run

      blazer-api-api-blazerbrowser-com.azurewebsites.net

      Contacted during the test run.

      Test run
    3. +1 more recorded observation

7 facts from the test run. See the full activity list.

Chapter 04

Technical details

1 of the 71 antivirus engines that checked it flags it; signed by BlazerBrowser.com LLC.

Sources checked

Every check behind this verdict

6 sources checked · all complete. Complete means the check returned a usable result; it does not mean the file is safe.

SourceStatusResultChecked
Antivirus enginesVirusTotal · 75 enginesCompleteWorth noting: 1 of 71 engines flagged it · 4 gave no result Details for antivirus engines
Sandbox runVirusTotal sandboxesCompleteCombined summary: clean verdict Details for sandbox run
Contacted hostsMalwareTips URL scannerComplete10 contacted hosts checked Details for contacted hosts
Signature rulesYARAify community rules + MalwareTips rulesComplete2 MalwareTips behaviour rules Details for signature rules
Malware sample databaseabuse.ch MalwareBazaarCompleteNot listed
Known-software referenceCIRCL hashlookupCompleteNo match

Engines that flagged it 1

  • MalwarebytesPUP.Optional.BlazerBrowser

File fingerprint

Last analyzed
Oct 12, 2026, 9:18 PM UTC
SHA-256
b3191d8840602d21bd4904b006f98352b4fdf1b59c0dc22ce8f12e1013abdb52
SHA-1
3f552efc3d530a8619e42d24dd63f5e1608332dd
MD5
506f4bdaec36623d0d9a01360fa6e193

About this file

BlazerBrowserSetup.exe is a Win32 EXE file of 1.1 MB.

Type and size
Win32 EXE · 1.1 MB
Signer
BlazerBrowser.com LLCValid code signature.
First seen
Sep 28, 2026On VirusTotal.
Submitted by
8 distinct sourcesRarely seen: few people have submitted this exact file.
Packer
None detected
Entropy
6.20 of 8

First scanned

Chapter 05

Questions & answers

Short answers to the 7 questions people ask most about this file.

Is BlazerBrowserSetup.exe safe, or is it malware?
BlazerBrowserSetup.exe is rated Suspicious: some signs point to a problem, but nothing confirms it is harmful. 1 of the 71 antivirus engines that checked it flags it, most as BlazerBrowser. Don't run it unless you're sure where it came from. If you need the program, download it again from the publisher's own website.
What is BlazerBrowserSetup.exe?
BlazerBrowserSetup.exe is a Windows program, about 1.1 MB. It carries no version information saying what it is or who made it. VirusTotal first saw it on Sep 28, 2026.
How many antivirus engines detected BlazerBrowserSetup.exe?
1 of the 71 antivirus engines that checked it flags BlazerBrowserSetup.exe (Malwarebytes). We weigh which engines flagged it and what else the scan found, not just the count.
I already downloaded and ran BlazerBrowserSetup.exe — what should I do?
No infection is confirmed: the rating is a caution, not a malware finding. 1) Check where it came from. If you can't confirm the source, delete it. 2) Run a full scan with your security software. 3) If the scan finds something, follow its removal steps and change passwords you typed on the device since then.
Is BlazerBrowserSetup.exe digitally signed?
Yes. BlazerBrowserSetup.exe has a valid digital signature from BlazerBrowser.com LLC, which shows the file hasn't been changed since that publisher signed it. Malware is sometimes signed with stolen certificates, so a signature alone isn't proof of safety.
What is the SHA-256 hash of BlazerBrowserSetup.exe?
The SHA-256 fingerprint of BlazerBrowserSetup.exe is b3191d8840602d21bd4904b006f98352b4fdf1b59c0dc22ce8f12e1013abdb52, and its MD5 is 506f4bdaec36623d0d9a01360fa6e193. 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.
How up to date is this analysis of BlazerBrowserSetup.exe?
This report reflects the scan on Oct 12, 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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Recent reports on other files with the same rating.

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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.