Our call: Is LuluNotes_Setup.exe safe?Safe
Unsigned NSIS installer with zero malicious detections across 74 engines and widespread distribution.
- 0 of 74 antivirus engines flagged the file.Observed · Antivirus analysis
- One or more independent reference checks were incomplete or unavailable.Derived · External-intelligence coverage
- The hash has been submitted 248 times from 221 sources.Derived · Saved report facts
589efb4cdc2301dc89…4f5c576d9cRecommended 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.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 74 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Not runNo contacted-host reputation check is recorded.
No timestamp recordedYARA
CompleteRule evaluation completed with no recorded matches.
External intel
PartialIndependent reference checks were attempted but are incomplete.
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
LuluNotes_Setup.exe
589efb4cdc2301dc89923b9b47ab45fc6867600ee0cc87e59d11354f5c576d9c
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Users\<USER>\Desktop\setup.exe"
02Isolated runtime analysis - ProcessObserved
Observed process
C:\Windows\System32\SecurityHealthService.exe C:\Windows\system32\SecurityHealthService.exe
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
System.dll
C:\Users\<USER>\AppData\Local\Temp\nsbC17C.tmp\System.dll
04Isolated runtime analysis - Written fileObserved
Nsis7z.dll
C:\Users\<USER>\AppData\Local\Temp\nsbC17C.tmp\Nsis7z.dll
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
5 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
0 of 74 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
One or more independent reference checks were incomplete or unavailable.
ProvenanceDerivedSourceExternal-intelligence coverageObserved at - 03
The hash has been submitted 248 times from 221 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: LuluNotes_Setup.exe — 589efb4cdc2301dc89923b9b47ab45fc6867600ee0cc87e59d11354f5c576d9c
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Users\<USER>\Desktop\setup.exe"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — C:\Windows\System32\SecurityHealthService.exe C:\Windows\system32\SecurityHealthService.exe
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: System.dll — C:\Users\<USER>\AppData\Local\Temp\nsbC17C.tmp\System.dll
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: Nsis7z.dll — C:\Users\<USER>\AppData\Local\Temp\nsbC17C.tmp\Nsis7z.dll
ProvenanceObservedSourceIsolated runtime analysisObserved at
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.
No engines flagged the file. The installer shows typical NSIS behaviour in a single sandbox run and has been submitted by 221 sources in 14 days.
Zero detections from 74 engines including 17 tier-1 engines reporting clean. The file is an unsigned NSIS installer with normal entropy and no packing. Sandbox execution produced only ambient techniques and no malicious verdicts. Prevalence data shows 221 submitters, indicating commodity distribution rather than targeted malware.
What We Detected
74 engines scanned the sample; none returned malicious or suspicious labels. The file is a 2.6 MB Win32 EXE with NSIS installer characteristics and no code-signing certificate.
Threat Behavior
One sandbox execution recorded standard installer actions: temporary file extraction, registry and mutex creation, and no outbound network activity. No dropped children were flagged malicious.
What To Do Now
Keep endpoint protection enabled. If the file was obtained from an official source, proceed with installation; otherwise verify the download origin before running.
Where this verdict could be wrong2 caveats
- Unsigned executables can be abused by malware authors; absence of a signature is neutral but reduces trust compared to signed installers.
- contactedHosts=null means no host-reputation cross-check was completed; this is missing coverage rather than a confirmed clean result.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Zero malicious detections across all engine tiers
- Common prevalence with 221 submitters
- No malicious sandbox verdict or dropped malicious children
The evidence supports treating the file as a clean installer; maintain normal security hygiene and only run software from trusted sources.
Behavior
Plain-English impact first, then the observed runtime evidence.
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.
- C:\Users\<USER>\AppData\Local\Temp\nsbC17C.tmp\System.dll
- C:\Users\<USER>\AppData\Local\Temp\nsbC17C.tmp\Nsis7z.dll
- C:\Users\<USER>\AppData\Local\Temp\nse9DA9.tmp\System.dll
- C:\ProgramData\Microsoft\Windows Security Health\Logs
- C:\Users\user\AppData\Local\Microsoft\Windows\Caches
- C:\Users\<USER>\AppData\Local\Temp\nsbC17C.tmp\Nsis7z.dll
- C:\Users\<USER>\AppData\Local\Temp\nsbC17C.tmp\System.dll
- C:\Users\<USER>\AppData\Local\Temp\nsbC17C.tmp\
- C:\Users\<USER>\AppData\Local\Temp\nsu9D6A.tmp
- C:\Users\<USER>\AppData\Local\Temp\nse9DA9.tmp
- SxInst_01_099bd8dcbcfa774a
- \BaseNamedObjects\Local\SM0:6788:304:WilStaging_02
- \BaseNamedObjects\Local\SM0:6788:120:WilError_03
- \BaseNamedObjects\Local\ZonesCacheCounterMutex
- \BaseNamedObjects\Local\ZonesLockedCacheCounterMutex
Files this sample writes at runtime
This file drops 2 children at runtime. None are currently flagged malicious in our cache.
- f8054bc8bbdde15e4538…6acad2Never scannednever seen before
- 8b4c47c4cf5e76ec57dd…90d37cNever scannednever seen before
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Detection sources at a glance
The available sources did not agree on a named threat category.
Available reference checks returned no match, but at least one source was unavailable. This is not a clean result.
YARA rules
No matchesThe rule pass completed without a saved public match.
0 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
Lots of people are uploading this but it's recent — typical of newly-released legitimate software. Low prior for malware.
Fingerprint and provenance
- File name
- LuluNotes_Setup.exe
- Format
- Win32 EXE
- Code signing
- No verified publisher
- Size
- 2.5 MB
- Last analyzed
- Aug 1, 2026, 4:40 AM UTC
589efb4cdc2301dc89923b9b47ab45fc6867600ee0cc87e59d11354f5c576d9cSafety & 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.
Install it only when it came from the developer's official site or an official app store.
A clean result reduces known risk, but it cannot guarantee that every new or targeted threat has been detected.
Keep your antivirus and Windows updates switched on so you stay protected.