File scan report
Verdict Safe
Is Fallout 4 Engine Extender safe? Yes, no threats found.
None of the 70 antivirus engines that checked it flagged this unpacked Fallout 4 mod plugin DLL, and its sandbox activity shows only plugin exports being called, with no…
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Moderate evidence · No engine flags it, but no publisher signature confirms who made it.
This plugin appears benign. Download it only from its official mod page, and keep your security software enabled.
Good practice2 tips
We found nothing harmful in this file.
Use it only as part of a program you got from the developer's own website.
Keep your antivirus and Windows updates switched on.
No scanner can promise a file is 100% safe.
Reads the latest antivirus results for this file's hash. Nothing is uploaded.
Antivirus results
0 of 70 flagged
- Flagged 0
- No detection 70
- No result 5
- Code signing Unsigned
- Test run Completed
- First seen 2mo ago
Chapter 02
Why we think so
1 point against it and 4 in its favour, checked against the scan evidence.
The reasoning behind this verdict
This DLL behaves like a Fallout 4 Script Extender plugin: it exposes the standard plugin load, preload and version functions. None of the 70 antivirus engines that checked it flagged it, it is not packed, and the sandbox runs recorded no injection into other processes and no network activity of its own. It is unsigned, which is common for community game mods.
None of the 70 antivirus engines that checked it flagged the file, including all 18 major antivirus engines that reported on it. The sandbox runs show the DLL being loaded with rundll32 and its F4SE plugin functions being called, and the crash reports it produced are expected for a game plugin running outside the game. The file shows no packing or high-entropy code. It is unsigned with no publisher history, a typical gap for community mods but one that leaves authorship unconfirmed.
What We Detected
None of the 70 antivirus engines that checked it flagged this 64-bit DLL. Its sections show normal entropy with no packer. It exports F4SEPlugin_Load, F4SEPlugin_Preload and F4SEPlugin_Version, the interface used by Fallout 4 Script Extender plugins.
Threat Behavior
In the sandbox runs, the DLL was loaded through rundll32 and crashed. That is expected, because a game plugin needs the game process to run. No processes were injected into, no persistence was set, and the only network contact was the analysis machine's own background traffic. Several mapped techniques appeared without supporting artefacts. These mappings are common on legitimate software.
What To Do Now
Obtain the mod from its official mod page and keep your antivirus enabled. The file is unsigned, so confirm that it came from a trusted mod source.
Where this verdict could be wrong2 caveats
- The DLL is unsigned and has no publisher history, so its authorship cannot be confirmed from a signature.
- No complete host-reputation result or external intelligence lookup is available for this file.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- None of the 70 antivirus engines that checked it flagged the file.
- It exposes standard Fallout 4 Script Extender plugin functions, matching its stated purpose.
- No packing or obfuscated code sections.
- No injection into other processes, no persistence and no network activity of its own were recorded.
- The DLL carries no digital signature, so its author cannot be verified.
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 our isolated test environment; no test environment rated what it did as risky.
Test run summary
Capture complete- 19sandbox rule tags
- 8spawned processes
- 0network contacts
- 25filesystem & mutex artifacts
What this file did when executed
This file was run in a sandbox and its runtime behaviour was observed.
Techniques observed in the sandbox
19MITRE ATT&CK techniques the sandbox mapped. Highlighted ones are rare in normal software; the others are common in legitimate programs too.
- T1027· Obfuscated code
- T1027.002· Obfuscated code
- T1033· Reads user info
- T1036
- T1055· Process injection
- T1056· Keylogging
- T1057· Lists programs
- T1071· Application protocol
- T1082· System recon
- T1083· Scans your files
- T1129· Loads modules
- T1218.011
- T1497· Sandbox evasion
- T1497.001· Sandbox evasion
- T1518.001· Checks your AV
- T1542.003
- T1562.001· Disables security
- T1574· Execution hijack
- T1614
Observed activity
Processes started
8Programs the file ran, with their command lines.
rundll32.exe"C:\Windows\sysnative\rundll32.exe" "C:\Users\<USER>\Desktop\f4ee.dll",#1loaddll64.exeC:\Windows\System32\loaddll64.exe loaddll64.exe "C:\Users\user\Desktop\f4ee.dll"cmd.exeC:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\f4ee.dll",#1rundll32.exeC:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\f4ee.dll",#1rundll32.exeC:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\f4ee.dll,F4SEPlugin_Loadrundll32.exeC:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\f4ee.dll,F4SEPlugin_Preload
Show all 8 entries for processes started
rundll32.exeC:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\f4ee.dll,F4SEPlugin_Versionrundll32.exeC:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\f4ee.dll",F4SEPlugin_Load
Files
15Files the file created, changed or deleted.
- Written
C:\ProgramData\Microsoft\Windows\WER\Temp - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\b7d2ec16-5314-4800-acab-8de86f560dd7 - Written
C:\ProgramData\Microsoft\Windows\WER\ReportQueue - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\2bdaced5-f827-49b3-824c-7c27a81d7dfd - Written
C:\ProgramData\Microsoft\Windows\WER\ReportArchive - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\17e38454-b86f-4432-aeab-8d9a9d5e2dde
Show all 15 entries for files
- Written
C:\ProgramData\Microsoft\Windows\WER\Temp\24ad2e95-8da0-447b-8a93-0aa84cfd569b - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\2e2f314d-7c7d-44e4-8ece-3959ec7c54b4 - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\320084bf-3a07-4f8f-843d-5d97c10db736 - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\32b1dc45-e6f1-40d8-b09e-f517d80f8b33 - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\33681b12-8f06-4795-b708-0808afa561f4 - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\3871bb5e-1718-470d-97ee-c2f749c622d7 - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\391a2e88-0636-4725-8aa9-8bcae60e1c64 - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\3ed3ae79-8a0f-40d5-a575-42ff1ce30eb2 - Written
C:\ProgramData\Microsoft\Windows\WER\Temp\4a478c1b-e1ee-4f38-afab-18b12ffc0229
Registry and auto-start
1Settings the file changed, including ways to start again after a restart.
- Deleted
\REGISTRY\A\{89e5c006-2ed3-7662-42a6-1d2fcdb2af68}\Root\InventoryApplicationFile\PermissionsCheckTestKey
Mutexes
10Named locks a program uses so only one copy runs; malware families often reuse them.
\Sessions\1\BaseNamedObjects\Local\WERReportingForProcess6892\Sessions\1\BaseNamedObjects\InventorySynchronizationInventoryApplicationFileMutex3624\Sessions\1\BaseNamedObjects\Local\WERReportingForProcess6876\Sessions\1\BaseNamedObjects\InventorySynchronizationInventoryApplicationFileMutex4956\Sessions\1\BaseNamedObjects\Local\WERReportingForProcess7036\Sessions\1\BaseNamedObjects\InventorySynchronizationInventoryApplicationFileMutex6200
Show all 10 entries for mutexes
\Sessions\1\BaseNamedObjects\Local\WERReportingForProcess6292\Sessions\1\BaseNamedObjects\InventorySynchronizationInventoryApplicationFileMutex6472\Sessions\1\BaseNamedObjects\Local\WERReportingForProcess7144\Sessions\1\BaseNamedObjects\InventorySynchronizationInventoryApplicationFileMutex6068
Sandbox background — not the file
8The analysis machine's own processes and connections, recorded in every run.
- VM process
WerFault.exeC:\Windows\system32\WerFault.exe -u -p 4544 -s 564 - VM process
conhost.exeC:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 - VM process
WerFault.exeC:\Windows\System32\WerFault.exe C:\Windows\system32\WerFault.exe -u -p 6892 -s 440 - VM process
WerFault.exeC:\Windows\System32\WerFault.exe C:\Windows\system32\WerFault.exe -u -p 6876 -s 436 - VM process
WerFault.exeC:\Windows\System32\WerFault.exe C:\Windows\system32\WerFault.exe -u -p 7036 -s 540 - VM process
WerFault.exeC:\Windows\System32\WerFault.exe C:\Windows\system32\WerFault.exe -u -p 7144 -s 432
Show all 8 entries for sandbox background — not the file
- VM process
WerFault.exeC:\Windows\System32\WerFault.exe C:\Windows\system32\WerFault.exe -u -p 6292 -s 436 - VM host
162.159.36.2
Chapter 04
Technical details
None of the 70 antivirus engines that checked it flag it; no publisher signature.
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
- Aug 27, 2026, 11:18 PM UTC
- SHA-256
5d4058926ae8bd44140ffd814e0bcd5be16d0b0799f7d7420a1c52577e8d88c7- SHA-1
eab230274181937567321c9d8efeaea6d07cc151- MD5
e074add77af507639a069dc9159421cd
About this file
Fallout 4 Engine Extender is a Win32 DLL file of 1.1 MB.
- Type and size
- Win32 DLL · 1.1 MB
- Signer
- UnsignedNo code signature.
- First seen
- Aug 25, 2026On VirusTotal.
- Submitted by
- 18 distinct sources
- Packer
- None detected
- Entropy
- 6.05 of 8
First scanned Updated
Verdict history
- Suspicious
- Safeafter a re-check of the saved evidence
Ratings change when antivirus engines, our checks or MalwareTips staff learn more about a file.
Antivirus consensus
0 of 70 engines flagged this file
5 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-235 engines0flagged
- Low-trust17 engines0flagged
View all 75 engine results
- AcronisClean
- AhnLab-V3Clean
- AlibabaClean
- alibabacloudClean
- ALYacClean
- Antiy-AVLClean
- APEXClean
- ArcabitClean
- AvastClean
- Avast-MobileNo result
- AVGClean
- AviraClean
- BitDefenderClean
- BitDefenderFalxNo result
- BkavClean
- CAT-QuickHealClean
- ClamAVClean
- CMCClean
- CrowdStrikeClean
- CTXClean
- CylanceClean
- CynetClean
- DeepInstinctClean
- DrWebClean
- ElasticClean
- 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
- PaloaltoClean
- PandaClean
- RisingClean
- SangforClean
- SentinelOneClean
- SkyhighNo result
- SophosClean
- SUPERAntiSpywareClean
- SymantecClean
- SymantecMobileInsightNo result
- TACHYONClean
- tehtrisClean
- TencentClean
- TrapmineClean
- TrellixENSClean
- TrendMicroClean
- TrendMicro-HouseCallClean
- TrustlookNo result
- VaristClean
- VBA32Clean
- VIPREClean
- VirITClean
- ViRobotClean
- WebrootClean
- 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)
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.
Chapter 05
Questions & answers
Short answers to the 6 questions people ask most about this file.
Is Fallout 4 Engine Extender safe?
What is Fallout 4 Engine Extender?
How many antivirus engines detected Fallout 4 Engine Extender?
What is the SHA-256 hash of Fallout 4 Engine Extender?
Is it safe to use Fallout 4 Engine Extender?
How up to date is this analysis of Fallout 4 Engine Extender?
Community
Member reviews and reports for this exact file hash.