Is setup.exe safe?
Only 1 of 75 engines flagged this unsigned installer, but possible process injection and LSASS-targeting activity warrant caution until its origin is verified.
The antivirus evidence is mostly reassuring: CrowdStrike alone reported generic grayware, while all 17 reporting tier-1 engines were clean. However, the unsigned installer produced runtime indicators associated with process injection and possible LSASS access, so it should not be run unless its source and integrity can be independently verified.
854d10b4a1f83f9843…c4c3ab3948481eRecommended next actions
Before installing
Do not install it until the source and publisher can be verified independently.
If you already installed it
Stop using it, scan the device, and watch for unexpected behavior or security alerts. Download a fresh installer from the developer's official site or an official app store.
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.
The antivirus evidence is mostly reassuring: CrowdStrike alone reported generic grayware, while all 17 reporting tier-1 engines were clean. However, the unsigned installer produced runtime indicators associated with process injection and possible LSASS access, so it should not be run unless its source and integrity can be independently verified.
CrowdStrike is the only detector among 75 engines, and its grayware label does not identify a malware family. All 17 reporting tier-1 engines returned no detection, materially increasing the likelihood that the lone alert is a false positive. However, the completed runtime record maps activity to T1055 and T1134, while a separate heuristic cites possible targeting of LSASS; those behaviors are more concerning than ordinary installer activity. The sole observed host was fully checked without a reputation hit, and the inspected child was not identified as malicious. Because the file is unsigned and the similar-file evidence consists only of imphash matches without matching signers, neither publisher identity nor historical similarity resolves the behavioral concerns.
What We Detected
CrowdStrike alone flagged the file among 75 engines, using a generic grayware label. None of the 17 reporting tier-1 engines detected it, and no named malware family achieved consensus.
Threat Behavior
One completed sandbox run recorded techniques mapped to T1055 (Process Injection) and T1134 (Access Token Manipulation). A behavioral heuristic also cites possible LSASS targeting, which can be associated with credential access, although the sandbox itself did not issue a malicious result. The single observed domain, assets.msn.com, was covered by the host-reputation check without a malicious or suspicious hit, and the inspected dropped child was not identified as malicious.
What To Do Now
Do not launch this unsigned installer unless it came directly from the expected vendor or another trusted release channel. Keep endpoint protection enabled, verify the SHA-256 hash with the publisher, and obtain a properly signed copy if one is available.
Where this verdict could be wrong4 caveats
- All 17 reporting tier-1 engines were clean, and only CrowdStrike supplied a generic grayware detection among 75 engines.
- The completed sandbox assigned a clean result, although its telemetry still mapped to T1055, T1134, and possible LSASS access.
- Four similar-imphash samples previously received safe verdicts, but the lack of signer co-matches makes those installer-framework similarities weak.
- No malicious child, malicious contacted host, packing indicator, brand mismatch, or external-intelligence hit was found.
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 1/75 engines reported a detection
- engines.tier1Malicious=0 and 17 tier-1 engines reported clean
- behaviour.hasMaliciousSandboxVerdict=false
- contactedHosts covered 1/1 observed hosts with no reputation hit
- droppedChildren.hasMaliciousChild=false and externalIntel.yaraify.ruleCount=0
- Unsigned Win32 executable with no authenticated publisher history
- Runtime evidence mapped to T1055 process injection
- Runtime evidence mapped to T1134 access-token manipulation
- Heuristic evidence cites possible LSASS targeting
- Generic filename setup.exe provides little provenance
Quarantine the file until its source and SHA-256 can be verified against the publisher's official release. Keep antivirus protection enabled and prefer a publisher-signed installer.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete1 of 75 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Complete1 contacted host was cross-checked.
YARA
Complete2 signature or behavior rules 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
- 14MITRE ATT&CK techniques
- 12spawned processes
- 1network contacts
- 4filesystem & mutex artifacts
What this file does
Observed actions and their security significance
High concern: Injected code into another process, a technique that can conceal execution.
Moderate concern: Contained obfuscated or packed code that makes inspection harder.
Moderate concern: Runs hidden system commands (script or shell).
Moderate concern: Communicated over a common application protocol; malware can use this for command-and-control.
Moderate concern: Scans through your files and folders.
Note: Reads your Windows user-account details.
Note: Collects details about your system.
These are observed capabilities from an isolated analysis. A technique does not prove malicious intent on its own, and the file never ran on your device.
Attack story
Runtime observations grouped by analysis stage. Arrows organize the stages; they do not claim chronology or causality.
Input file
The submitted object
- FileObserved
setup.exe
854d10b4a1f83f984310ce69ab08ff886edafa81be4cbed9d5c4c3ab3948481e
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Users\<USER>\Desktop\setup.exe"
02Isolated runtime analysis - ProcessObserved
Observed process
"C:\Users\<USER>\AppData\Local\Temp\is-8HRI1.tmp\setup.tmp" /SL5="$4004A,2233561,323072,C:\Users\<USER>\Desktop\setup.exe"
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
setup.tmp
C:\Users\<USER>\AppData\Local\Temp\is-8HRI1.tmp\setup.tmp
04Isolated runtime analysis - Written fileObserved
setup.tmp
C:\Users\<USER>\AppData\Local\Temp\is-RF4EF.tmp\setup.tmp
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
Network
Hosts contacted
- Contacted hostObserved
assets.msn.com
Contact observed during runtime.
06Isolated runtime analysis
6 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.
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.
- assets.msn.com
- C:\Users\<USER>\AppData\Local\Temp\is-8HRI1.tmp\setup.tmp
- C:\Users\<USER>\AppData\Local\Temp\is-RF4EF.tmp\setup.tmp
- C:\Users\user\AppData\Local\Temp\is-0DKGQ.tmp
- C:\Users\user\AppData\Local\Temp\is-0DKGQ.tmp\setup.tmp
Files this sample writes at runtime
This file drops 1 child at runtime. None are currently flagged malicious in our cache.
- 695d7d9ba92fed2d4898…f0a3beNever 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.
- 2rule hits recorded
- 1 / 75engines flagged
- 49sources 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 75 antivirus engines flagged the file, including CrowdStrike.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 03
The hash has been submitted 59 times from 49 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: setup.exe — 854d10b4a1f83f984310ce69ab08ff886edafa81be4cbed9d5c4c3ab3948481e
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-8HRI1.tmp\setup.tmp" /SL5="$4004A,2233561,323072,C:\Users\<USER>\Desktop\setup.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: setup.tmp — C:\Users\<USER>\AppData\Local\Temp\is-8HRI1.tmp\setup.tmp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: setup.tmp — C:\Users\<USER>\AppData\Local\Temp\is-RF4EF.tmp\setup.tmp
ProvenanceObservedSourceIsolated runtime analysisObserved at - 09
Contacted host: assets.msn.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.
EvidenceC:\Windows\System32\svchost.exe -k NetworkService -pSandbox observed process activity targeting LSASS (Windows credential store). Legitimate software has no business reading LSASS memory — this is Mimikatz-shape behaviour.
EvidenceC:\Windows\system32\lsass.exe
1 of 75 engines flagged this file
View all 75 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
- 2.7 MB
- Last analyzed
- Oct 6, 2026, 5:10 PM UTC
854d10b4a1f83f984310ce69ab08ff886edafa81be4cbed9d5c4c3ab3948481eSafety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
We couldn't fully clear this file. Treat it with caution.
- Recovery step 01
Don't install it unless you're certain it came from a source you trust.
- Recovery step 02
Check where you got it — an unexpected attachment or a random download link is a red flag.
- Recovery step 03
If its origin cannot be confirmed, delete this file and use a fresh copy from a trusted source. Download a fresh installer from the developer's official site or an official app store.
- Recovery step 04
If you're still unsure, scan it again in a day or two — detections often catch up on newer files.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is setup.exe safe, or is it malware?
What is setup.exe?
How many antivirus engines detected setup.exe?
I already downloaded and installed setup.exe — what should I do?
How do I remove setup.exe?
What is the SHA-256 hash of setup.exe?
How up to date is this analysis of setup.exe?
Community
Member reviews and reports for this exact file hash.