File scan report
Verdict Safe
Is a4916ed8-
A validly signed Windows installer from Learning Machines Inc that none of the 63 antivirus engines that checked it flagged, with two sandbox runs reporting a clean combined…
Read the whole reasonShow less
Strong evidence · A verified publisher signature, and no engine flags it.
Nothing in the evidence suggests this installer is harmful, so it can be used if you were expecting it. Confirm the download source first, keep your antivirus protection enabled, and scan the installed program once setup finishes.
Good practice2 tips
We found nothing harmful in this file.
Open it only if you trust the person or website it came from.
Keep your security software and system updates switched on.
No scanner can promise a file is 100% safe.
Antivirus results
0 of 63 flagged
- Flagged 0
- No detection 63
- No result 12
- Code signing Learning Machines Inc
- Test run Completed
- First seen 2d ago
Chapter 02
Why we think so
5 points against it and 5 in its favour, checked against the scan evidence.
The reasoning behind this verdict
The combined sandbox verdict was clean, with no injected processes, no contacted domains and no dropped files. The publisher's small sample history contains no malicious entries.
None of the 63 antivirus engines that checked it flagged this installer, and every one of the 18 major antivirus engines that analysed it returned a clean result. The file carries a valid signature from Learning Machines Inc, and our history for that publisher covers seven samples with none rated malicious. Sandbox analysis produced a clean combined result across the runs, with no injected process, no dropped files and no outbound domains recorded. The only sandbox mapping of note was a process-injection label with no named target, which is a common artefact of installer setup routines rather than evidence of injection. The file was submitted by 32 distinct sources within a day of first appearing, and files sharing this publisher signature have previously been rated clean three times out of five. The lack of a completed host-reputation check and the absence of an inside look at the installer payload are coverage gaps, not findings against the file.
What We Detected
The file is a Windows Installer package with a valid digital signature naming Learning Machines Inc. No engine flagged it, including all 18 major antivirus engines that returned a result, and there were no suspicious or potentially unwanted detections either. Microsoft, Kaspersky, ESET-NOD32, BitDefender, Fortinet, Avira, Avast, G Data and Ikarus all reported the file as clean.
Publisher And History
The publisher's signature verified successfully and our records hold seven earlier samples under the same identity, five rated clean and none rated malicious. That is a short history, and the publisher is not on our curated list of established vendors, so the signature supports the file without being decisive on its own. Four other installers and launchers from this publisher appeared in earlier analyses; three were rated clean and two were rated cautiously, which is why confidence stays moderate.
Threat Behavior
The combined sandbox verdict was clean. The installer ran through the standard Windows installer service, wrote temporary installer files and font cache entries, registered a root certificate entry and created the usual installer program markers — all routine installation activity. No processes were injected, no files were dropped that carry a verdict, no persistence was established outside the installation itself and no network destinations were contacted.
What To Do Now
The evidence does not point to malware, but the file arrived under a random string rather than a product-named installer and we could not inspect the package contents internally. If you did not expect this installer, confirm with the sender or download it again from the vendor's own site before running it. Keep your antivirus protection enabled, and let it scan the installed program after setup completes.
Where this verdict could be wrong4 caveats
- Two earlier installers carrying the same publisher signature were rated cautiously rather than clean by our analysis, so this publisher's recent output has not always been judged benign.
- The publisher is not on our curated trusted list and we only hold a short history of seven samples, which limits how much weight its signature carries on its own.
- The reputation check on hosts the installer might contact was not completed, so no host-level verification result is available for this file.
- Nobody has looked inside this installer's payload: the containers and scripts it carries were not unpacked, so the internal contents were not examined.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- Valid digital signature from Learning Machines Inc that passed verification.
- None of the 63 antivirus engines that checked it flagged the file, including all 18 major antivirus engines that returned a result.
- The combined sandbox verdict was clean with no injected processes and no contacted domains.
- The publisher's record shows no malicious samples among the seven we have seen.
- Thirty-two distinct sources submitted the file within a day of it first appearing, which is consistent with a normal software release.
- The publisher is not on our curated trusted-vendor list and we hold only a short history of samples under that name.
- Two earlier installers carrying the same publisher signature were rated cautiously by our analysis rather than clean.
- The file arrived under a random identifier rather than a product-named installer, so what it actually installs cannot be judged from the file name.
- The installer's internal contents were not unpacked or examined, so what it deploys after setup was not reviewed here.
- No completed reputation result is available for destinations the installer might reach.
6 sources checked · 5 complete · 1 not needed or not applicable. See every source
Chapter 03
What it did in our test
It ran in 2 isolated tests; no test environment rated what it did as risky.
Test run summary
Capture complete- 2isolated sandbox runs
- 7sandbox rule tags
- 2spawned processes
- 0network contacts
- 6filesystem & mutex artifacts
What this file did when executed
This file was detonated in 2 sandboxes and its runtime behaviour was observed.
Sandbox verdicts
1- VT: CLEANclean
Techniques observed in the sandbox
7MITRE ATT&CK techniques the sandbox mapped. Highlighted ones are rare in normal software; the others are common in legitimate programs too.
- T1033· Reads user info
- T1055· Process injection
- T1082· System recon
- T1091· USB spreading
- T1112
- T1120
- T1574· Execution hijack
Observed activity
Processes started
2Programs the file ran, with their command lines.
msiexec.exe"C:\Windows\system32\msiexec.exe" /I "C:\Users\<USER>\Desktop\installer.msi" /qb ACCEPTEULA=1 LicenseAccepted=1msiexec.exe"C:\Windows\System32\msiexec.exe" /i "C:\Users\user\Desktop\install.msi"
Files
4Files the file created, changed or deleted.
- Written
C:\Windows\ServiceProfiles\LocalService\AppData\Local\FontCache\Fonts\Download-1.tmp - Written
C:\MSIe2a52.tmp - Written
C:\Windows\Fonts - Deleted
C:\MSIe2a52.tmp
Registry and auto-start
1Settings the file changed, including ways to start again after a restart.
- Set
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\F40042E2E5F7E8EF8189FED15519AECE42C3BFA2\Blob
Mutexes
2Named locks a program uses so only one copy runs; malware families often reuse them.
Global\_MSIExecute\BaseNamedObjects\Local\SM0:6544:304:WilStaging_02
Sandbox background — not the file
6The analysis machine's own processes and connections, recorded in every run.
- VM process
services.exeC:\Windows\system32\services.exe - VM process
svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p - VM process
svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup - VM process
svchost.exeC:\Windows\system32\svchost.exe -k LocalService -s W32Time - VM process
lsass.exeC:\Windows\system32\lsass.exe - VM process
msiexec.exeC:\Windows\System32\msiexec.exe C:\Windows\system32\msiexec.exe /V
Chapter 04
Technical details
None of the 63 antivirus engines that checked it flag it; signed by Learning Machines Inc.
Sources checked
Every check behind this verdict
6 sources checked · 5 complete · 1 not needed or not applicable. Complete means the check returned a usable result; it does not mean the file is safe.
File fingerprint
- Last analyzed
- Nov 6, 2026, 2:23 AM UTC
- SHA-256
6934e43c28d21166705db79407292fb0bfaaf891496ae1e194c9f110142e914d- SHA-1
d551d57731fc75e55c826fb78b01e741a0acbc3c- MD5
4ec0e30dfc983809fd607b79b92540a6
About this file
a4916ed8-ecfe-426d-be71-1a6bd3b83441 is a Windows Installer file of 10.1 MB.
- Type and size
- Windows Installer · 10.1 MB
- Signer
- Learning Machines IncValid code signature.
- First seen
- Nov 5, 2026On VirusTotal.
- Submitted by
- 32 distinct sources
First scanned
Antivirus consensus
0 of 63 engines flagged this file
12 of the 75 engines returned no result for this file (file type not supported, or the scan did not finish), so they did not check it.
- Tier-118 engines0flagged
- Tier-233 engines0flagged
- Low-trust12 engines0flagged
View all 75 engine results
- AcronisClean
- AhnLab-V3Clean
- AlibabaNo result
- alibabacloudClean
- ALYacClean
- Antiy-AVLClean
- APEXNo result
- ArcabitClean
- AvastClean
- Avast-MobileNo result
- AVGClean
- AviraClean
- BitDefenderClean
- BitDefenderFalxNo result
- BkavClean
- CAT-QuickHealClean
- ClamAVClean
- CMCClean
- CrowdStrikeClean
- CTXClean
- CylanceNo result
- CynetClean
- DeepInstinctNo result
- DrWebClean
- ElasticNo result
- EmsisoftClean
- ESET-NOD32Clean
- F-SecureClean
- FortinetClean
- GDataClean
- GoogleClean
- GridinsoftClean
- huorongClean
- IkarusClean
- JiangminClean
- K7AntiVirusClean
- K7GWClean
- KasperskyClean
- KingsoftClean
- LionicClean
- MalwarebytesClean
- MaxSecureClean
- McAfeeDClean
- MicrosoftClean
- MicroWorld-eScanClean
- NANO-AntivirusClean
- PaloaltoNo result
- PandaClean
- RisingClean
- SangforClean
- SentinelOneClean
- SkyhighClean
- SophosClean
- SUPERAntiSpywareClean
- SymantecClean
- SymantecMobileInsightNo result
- TACHYONClean
- tehtrisNo result
- TencentClean
- TrapmineClean
- TrellixENSClean
- TrendMicroClean
- TrendMicro-HouseCallClean
- TrustlookNo result
- VaristClean
- VBA32Clean
- VIPREClean
- VirITClean
- ViRobotClean
- WebrootNo result
- XcitiumClean
- YandexClean
- ZillyaClean
- ZoneAlarmClean
- ZonerClean
Signatures and behavior heuristics
Low-severity pattern matches — worth noting but not on their own cause for alarm.
VirusTotal's sandbox summary maps this run to MITRE T1055 (Process Injection), but no injected process of the sample's own was recorded (the analysis VM's own WMI adapter, crash handlers and Chrome updater are not counted). VirusTotal maps T1055 on about half of all files no engine flags, so the mapping alone is not evidence of injection.
EvidenceT1055 (sandbox MITRE mapping)
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
Chapter 05
Questions & answers
Short answers to the 7 questions people ask most about this file.
Is a4916ed8-ecfe-426d-be71-1a6bd3b83441 safe?
What is a4916ed8-ecfe-426d-be71-1a6bd3b83441?
How many antivirus engines detected a4916ed8-ecfe-426d-be71-1a6bd3b83441?
Is a4916ed8-ecfe-426d-be71-1a6bd3b83441 digitally signed?
What is the SHA-256 hash of a4916ed8-ecfe-426d-be71-1a6bd3b83441?
Is it safe to open a4916ed8-ecfe-426d-be71-1a6bd3b83441?
How up to date is this analysis of a4916ed8-ecfe-426d-be71-1a6bd3b83441?
Community
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