Is Setup.exe safe?
Only Webroot flagged this unsigned installer as repacked riskware, while 17 tier-one engines, runtime analysis, child inspection, and host checks found no corroborating threat.
Webroot alone flagged the file among 74 engines, and no tier-one engine identified malware. Runtime analysis mapped two concerning techniques, but produced no malicious sandbox conclusion; the sole contacted host and all 10 inspected children also lacked known threat findings.
521b660b7e0efa5815…f8f38dc8d9b4c9Recommended next actions
Before installing
Install it only when it came from the developer's official site or an official app store.
If you already installed it
Keep normal device protection enabled and stop if the file behaves unexpectedly.
Intelligence
The saved assessment, checked against the scan evidence and recorded coverage.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
Webroot alone flagged the file among 74 engines, and no tier-one engine identified malware. Runtime analysis mapped two concerning techniques, but produced no malicious sandbox conclusion; the sole contacted host and all 10 inspected children also lacked known threat findings.
The detection profile is dominated by a single low-trust Webroot riskware label, while all 17 reporting tier-one engines remained silent. One completed sandbox run mapped T1055 and T1134, so the runtime evidence is not entirely routine, but it did not produce a malicious sandbox conclusion. The sole observed domain received complete cache coverage without a known malicious or suspicious match, and none of the 10 inspected children was identified as malicious. External intelligence supplied no YARAify, MalwareBazaar, or CIRCL corroboration. The unsigned status and mixed imphash history reduce confidence, but those imphash matches lack signer co-matching and include files with very different detection profiles.
What We Detected
Webroot was the only engine among 74 to flag the sample, using the label W32.Riskware.Repack. No tier-one engine detected it, and there was no family consensus or confirmed hacktool label. The file is unsigned, so its publisher cannot be authenticated.
Threat Behavior
One completed sandbox run mapped activity to T1055 and T1134, which can be associated with process injection and token manipulation. However, the sandbox did not issue a malicious conclusion, no persistence indicators were recorded, and none of the 10 inspected child files was identified as malicious. The host-reputation check covered the sole observed domain, svc.ha-teams.office.com, without a known malicious or suspicious match.
What To Do Now
Use the installer only if it came from the software vendor's official release channel and its expected product is known. Keep endpoint protection enabled, and discard the file if its origin cannot be verified or installation behavior differs from what was expected.
Where this verdict could be wrong3 caveats
- The executable is unsigned: signing.applicable=true and signing.signed=false, so no verified publisher identity supports it.
- Runtime mappings include T1055 process injection and T1134 access-token manipulation, which warrant caution despite the non-malicious sandbox conclusion.
- Three imphash-matched files previously received malicious outcomes, although signerCoMatch=false and their detection profiles were substantially stronger.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Only 1/74 engines flagged the sample
- engines.tier1Malicious=0 across 17 tier-one engines
- behaviour.hasMaliciousSandboxVerdict=false
- droppedChildren.hasMaliciousChild=false after 10 inspections
- YARAify, MalwareBazaar, and CIRCL returned no hits
- Unsigned Win32 executable with no verifiable publisher
- Runtime evidence mapped T1055 process injection
- Runtime evidence mapped T1134 access-token manipulation
- Webroot labeled the sample W32.Riskware.Repack
- Mixed prior outcomes among imphash-only similar files
Verify the download against the publisher's official release channel before running it. Keep antivirus and endpoint protection enabled during installation.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete1 of 74 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Complete1 contacted host was cross-checked.
YARA
Complete1 signature or behavior rule matched.
External intel
Complete3 of 3 independent reference sources completed.
Behavior
Plain-English impact first, then the observed runtime evidence.
Runtime flight recorder
Capture complete- 1isolated sandbox run
- 16MITRE ATT&CK techniques
- 5spawned processes
- 1network contacts
- 17filesystem & mutex artifacts
What this file did when executed
This file was detonated in 1 sandbox and its runtime behaviour was observed.
Adversary techniques mapped to the MITRE ATT&CK framework.
- svc.ha-teams.office.com
- HKEY_USERS\S-1-5-21-575823232-3065301323-1442773979-1000\Software\Microsoft\RestartManager\Session0000\Owner
- HKEY_USERS\S-1-5-21-575823232-3065301323-1442773979-1000\Software\Microsoft\RestartManager\Session0000\Sequence
- HKEY_USERS\S-1-5-21-575823232-3065301323-1442773979-1000\Software\Microsoft\RestartManager\Session0000\SessionHash
- Software\Microsoft\RestartManager\Session0000\Owner
- Software\Microsoft\RestartManager\Session0000\Sequence
- HKEY_USERS\S-1-5-21-4270068108-2931534202-3907561125-1001\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe\OpenWithProgids\exefile
- C:\Users\<USER>\AppData\Local\Temp\is-HM4C6.tmp\Setup.tmp
- C:\Users\<USER>\AppData\Local\Temp\is-2423D.tmp\_isetup\_setup64.tmp
- C:\Users\<USER>\AppData\Local\Temp\is-2423D.tmp\_isetup\_shfoldr.dll
- C:\Users\<USER>\AppData\Local\Temp\is-2423D.tmp\ISDone.dll
- C:\Users\<USER>\AppData\Local\Temp\is-2423D.tmp\botva2.dll
- \Sessions\1\BaseNamedObjects\Local\RstrMgr3887CAB8-533F-4C85-B0DC-3E5639F8D511
- \Sessions\1\BaseNamedObjects\Local\RstrMgr-3887CAB8-533F-4C85-B0DC-3E5639F8D511-Session0000
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- bb22238b9de45d10013c…9b2fd7Never scannednever seen before
- b0034f812ff8f9a71d5e…ed96d3Never scannednever seen before
- 1a72008c2393b330c3a9…226cedNever scannednever seen before
- 609661a14733f6e9c2c2…083d6aNever scannednever seen before
- 5a497b1f9789ff32c31c…dbcf4fNever scannednever seen before
- 36cf201c5171646a151b…7a13a1Never scannednever seen before
- fc8bc1e6e76cf8e5d1c5…353855Never scannednever seen before
- 43bfe50a575e87237abe…dfa527Never scannednever seen before
- 9884e9d1b4f8a873ccbd…360d87Never scannednever seen before
- d58911062d480075f4f1…c32f93Never scannednever seen before
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Evidence integrity
Chain of custody for the facts preserved in this report.
- 1rule hit recorded
- 1 / 74engines flagged
- 60sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
1 high-confidence signature or behavior rule matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 02
1 of 74 antivirus engines flagged the file, including Webroot.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 03
The hash has been submitted 65 times from 60 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: Setup.exe — 521b660b7e0efa58156eb86d8d1a5ca79b501d96ca15432206f8f38dc8d9b4c9
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Users\<USER>\Desktop\Setup.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — "C:\Users\<USER>\AppData\Local\Temp\is-HM4C6.tmp\Setup.tmp" /SL5="$200EC,2512244,227840,C:\Users\<USER>\Desktop\Setup.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: Setup.tmp — C:\Users\<USER>\AppData\Local\Temp\is-HM4C6.tmp\Setup.tmp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: _setup64.tmp — C:\Users\<USER>\AppData\Local\Temp\is-2423D.tmp\_isetup\_setup64.tmp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: svc.ha-teams.office.com — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at
Detection sources at a glance
The available sources did not agree on a named threat category.
MalwareBazaar, YARAify, and CIRCL hashlookup completed and returned no entries for this hash.
Signatures and behavior heuristics
A community signature or high-severity behavioral heuristic matched. Signatures identify known patterns; heuristics are strong leads but are not proof on their own.
The saved runtime evidence maps this activity to MITRE T1055 (Process Injection). The mapping supports possible process injection, but it does not prove the exact injection method or the operator's intent.
Evidence"C:\Users\<USER>\Desktop\Setup.exe"
1 of 74 engines flagged this file
View all 74 engine results
Section entropy & packers
No high-entropy executable section or known packer signature was detected. Data and resource sections can still have high entropy without indicating packed code.
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- Setup.exe
- Format
- Win32 EXE
- Code signing
- No verified publisher
- Size
- 2.9 MB
- Last analyzed
- Sep 30, 2026, 10:11 PM UTC
521b660b7e0efa58156eb86d8d1a5ca79b501d96ca15432206f8f38dc8d9b4c9Safety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file appears low risk based on the evidence available now.
- Recovery step 01
Install it only when it came from the developer's official site or an official app store.
- Recovery step 02
A clean result reduces known risk, but it cannot guarantee that every new or targeted threat has been detected.
- Recovery step 03
Keep your antivirus and Windows updates switched on so you stay protected.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is Setup.exe safe?
What is Setup.exe?
How many antivirus engines detected Setup.exe?
What is the SHA-256 hash of Setup.exe?
Is it safe to install Setup.exe?
How up to date is this analysis of Setup.exe?
Community
Member reviews and reports for this exact file hash.