File scan report
Verdict Suspicious
Is TBOKwin
A Windows optimizer batch script first seen on Oct 24, 2026, with no antivirus detections, but its system changes were never inspected and it has little history.
Read the whole reasonShow less
Why Suspicious? One of our detection rules matched it; nothing else confirms it.
Limited evidence · One sign points to a problem; nothing else confirms it.
Review the script in a text editor and create a restore point before running it, and only run it if you trust its source. Keep your antivirus and Windows security protections enabled at all times.
What to do now5 steps
Some signs point to a problem, but nothing confirms it is harmful. Treat it with caution.
What to do
Don't run it unless you're sure where it came from.
Check where you got it: an unexpected attachment, a link someone sent you or a re-upload is a red flag.
If you can't confirm where it came from, delete it. If you need the program, download it again from the publisher's own website.
It is only 1 day old. If you're unsure, scan it again in a few days; antivirus engines often catch up on new files.
If you already ran it
Stop using it, run a full scan with your antivirus and watch for unexpected behavior or security alerts.
Not sure what to do?
Ask the MalwareTips community before you run it. If you already ran it, follow the cleanup guide.
- Ask for free help on the MalwareTips forumWindows malware removal help, answered by volunteers. (opens malwaretips.com in a new tab)
- Remove malware from WindowsStep-by-step cleanup with free tools. (opens malwaretips.com in a new tab)
Paste this report's link in your topic so helpers can see what was found.
Reads the latest antivirus results for this file's hash. Nothing is uploaded.
Antivirus results
0 of 61 flagged
- Flagged 0
- No detection 61
- No result 14
- Code signing Not applicable
- Test run Completed
- First seen 1d ago
Chapter 02
Why we think so
3 points against it and 2 in its favour, checked against the scan evidence.
The reasoning behind this verdict
None of the 61 antivirus engines that checked it flagged this batch script, and the sandbox runs showed no high-risk activity. Its contents were never inspected, though, and it has little submission history. Optimizer scripts can make broad system changes, so the evidence is too thin to call it safe.
None of the 61 antivirus engines that checked it flagged the script, including all major antivirus engines that reported. In the sandbox runs it launched command prompts and a system filter-management tool. Scripts usually call that tool only to check whether they have administrator rights. No injection target, network contacts or persistence were recorded. However, nobody inspected the script's actual commands, and it was first seen on Oct 24, 2026 from only 12 submitters. Without a publisher identity or wider history, we cannot confirm what system settings it changes.
What We Detected
This 210 KB Windows batch script was not flagged by any of the 75 engines. It was first seen on Oct 24, 2026 and has been submitted by 12 sources. It carries no signature, as is normal for scripts, and no reference database lists it.
Threat Behavior
In two sandbox runs the script opened command prompts and ran a system filter-management tool, a common way for scripts to check for administrator rights. One of our behaviour rules matched this pattern, but nothing confirms a privilege-escalation attempt. No network contacts, process injection or persistence were recorded. The script's contents were not inspected, so the specific settings it changes are unknown.
What To Do Now
Only run this script if you trust where it came from. Open it in a text editor first to review what it changes, and back up or create a restore point beforehand. Keep your antivirus and Windows security features enabled. If the script tries to turn them off, do not run it.
Where this verdict could be wrong2 caveats
- One of our behaviour rules linked the script's call to a system filter-management tool with privilege-escalation tricks, but that tool is widely used by scripts simply to check for administrator rights.
- No engine flagged the file, which points toward a benign tweaking script.
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 61 antivirus engines that checked it flagged the file.
- The sandbox runs recorded no network contacts, no process injection and no persistence.
- The script's commands were never inspected, so the system changes it makes are unknown.
- It has little history: first seen on Oct 24, 2026 and sent by only 12 sources.
- It runs a system tool commonly used to check for administrator rights before making system-wide changes.
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
- 22sandbox rule tags
- 15spawned processes
- 0network contacts
- 15filesystem & mutex artifacts
What the test run showed
What the file did on a test computer
Confirmed in the test run
Moderate concern: Contains packed or scrambled code that is harder to inspect (common in installers too).
Moderate concern: Ran commands or a script on the test computer.
Note: Read the user name of the test computer.
Note: Listed the programs running on the test computer.
Note: Read basic details of the test computer, such as its Windows version.
Note: Looked through folders on the test computer (most installers do this).
Note: Loaded extra code modules while running.
Sandbox labels we could not confirm (common in safe files too)
Not confirmed: A sandbox rule tagged this run as code injection, but no injected program was recorded.
Not confirmed: A sandbox rule tagged this run as contacting a server, but no contacted host was recorded.
Not confirmed: A sandbox rule tagged this run as downloading a file, but no download was recorded.
Not confirmed: A sandbox rule tagged this run as weakening security settings; no setting change was recorded.
This file was run on a test computer (a sandbox), not on yours. Labels we could not confirm are listed so you can see them, but they are not treated as evidence against the file.
Recorded behavior
What happened in the test
Grouped by step. The order is not a timeline.
- 1
Input file
The submitted object
- Evidence 1 of 5: FileSeen in the test run
TBOKwinOptimizer.bat
6c0d8e53ec040ca8b5440198878bee20bd5fc6a8e83d3309b442044b9158597a
Uploaded file
- 2
Processes
What ran
- Evidence 2 of 5: ProcessSeen in the test run
fltMC.exe
C:\Windows\System32\fltMC.exe "C:\Windows\System32\fltmc.exe"
Test run - Evidence 3 of 5: ProcessSeen in the test run
wmiprvse.exe
C:\Windows\sysWOW64\wbem\wmiprvse.exe -Embedding
Test run - +1 more recorded observation
- 2
Files
Created or changed
- Evidence 4 of 5: Written fileSeen in the test run
StartupProfileData-NonInteractive
C:\Users\<USER>\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Test run - Evidence 5 of 5: Written fileSeen in the test run
powershell.exe.log
C:\Users\<USER>\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Test run - +1 more recorded observation
5 facts from the test run. See the full activity list.
What this file did when executed
This file was detonated in 2 sandboxes and its runtime behaviour was observed.
Techniques observed in the sandbox
22MITRE ATT&CK techniques the sandbox mapped. Highlighted ones are rare in normal software; the others are common in legitimate programs too.
- T1027· Obfuscated code
- T1033· Reads user info
- T1047
- T1055· Process injection
- T1057· Lists programs
- T1059· Runs commands
- T1059.001· Runs commands
- T1064
- T1069
- T1071· Application protocol
- T1074
- T1082· System recon
- T1083· Scans your files
- T1105· Network file transfer
- T1129· Loads modules
- T1202
- T1485
- T1518· Checks your AV
- T1542.003
- T1562· Disables security
- T1573
- T1574· Execution hijack
Observed activity
Processes started
15Programs the file ran, with their command lines.
fltMC.exeC:\Windows\System32\fltMC.exe "C:\Windows\System32\fltmc.exe"wmiprvse.exeC:\Windows\sysWOW64\wbem\wmiprvse.exe -Embeddingcmd.exe"C:\Windows\system32\cmd.exe" /c start /wait "" "C:\Users\<USER>\Desktop\TBOKwinOptimizer.bat"cmd.exeC:\Windows\system32\cmd.exe /K "C:\Users\<USER>\Desktop\TBOKwinOptimizer.bat"cmd.exeC:\Windows\system32\cmd.exe /c echo prompt $E| cmdcmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo prompt $E"
Show all 15 entries for processes started
cmdfltmc.exe"C:\Windows\System32\fltmc.exe"powershell.exepowershell.exe -NoLogo -NoProfile -NonInteractive -Command "try {" " $quote = [char]34;" " $batchCommand = $quote + $env:ELEVATE_SCRIPT + $quote;" " if ($env:ELEVATE_ARGUMENTS) {" " $batchCommand += ' ' + $env:ELEVATE_ARGUMENTS;" " };" " $cmdArguments = '/d /c ' + $quote + $batchCommand + $quote;" " Start-Process -FilePath $env:ComSpec -Verb RunAs -WorkingDirectory $env:ELEVATE_WORKDIR -ArgumentList $cmdArguments -ErrorAction Stop;" " exit 0;" "} catch {" " Write-Error ('Elevation launch failed: ' + $_.Exception.Messa…cmd.exeC:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe /c ""C:\Users\user\Desktop\TBOKwinOptimizer.bat" "cmd.exeC:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe /c echo prompt $E| cmdcmd.exeC:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe /S /D /c" echo prompt $E"cmd.exeC:\Windows\System32\cmd.exe cmdcmd.exeC:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe /c powershell.exe -NoLogo -NoProfile -NonInteractive -Command "Get-Date -Format yyyyMMdd-HHmmss"powershell.exeC:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe powershell.exe -NoLogo -NoProfile -NonInteractive -Command "Get-Date -Format yyyyMMdd-HHmmss"
Files
5Files the file created, changed or deleted.
- Written
C:\Users\<USER>\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive - Written
C:\Users\<USER>\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log - Written
\Device\ConDrv\\Connect - Written
\Device\Null - Written
stdout
Registry and auto-start
12Settings the file changed, including ways to start again after a restart.
- Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\.NET Memory Cache 4.0\Linkage\Export - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MSDTC Bridge 3.0.0.0\Linkage\Export - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MSDTC Bridge 4.0.0.0\Linkage\Export - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ServiceModelEndpoint 3.0.0.0\Linkage\Export - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ServiceModelOperation 3.0.0.0\Linkage\Export - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ServiceModelService 3.0.0.0\Linkage\Export
Show all 12 entries for registry and auto-start
- Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SMSvcHost 3.0.0.0\Linkage\Export - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SMSvcHost 4.0.0.0\Linkage\Export - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Windows Workflow Foundation 3.0.0.0\Linkage\Export - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Windows Workflow Foundation 4.0.0.0\Linkage\Export - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BITS\Performance\1008 - Set
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\rdyboost\Performance\1023
Mutexes
10Named locks a program uses so only one copy runs; malware families often reuse them.
Installing.NET CLR Data_Perf_Library_Lock_PID_8.NET CLR Networking_Perf_Library_Lock_PID_8.NET CLR Networking 4.0.0.0_Perf_Library_Lock_PID_8.NET Data Provider for Oracle_Perf_Library_Lock_PID_8.NET Data Provider for SqlServer_Perf_Library_Lock_PID_8
Show all 10 entries for mutexes
.NET Memory Cache 4.0_Perf_Library_Lock_PID_8.NETFramework_Perf_Library_Lock_PID_8BITS_Perf_Library_Lock_PID_8ESENT_Perf_Library_Lock_PID_8
Files this sample writes at runtime
This file drops 3 children at runtime. None are currently flagged malicious in our cache. 3 have no saved verdict and were not checked; that is missing coverage, not a finding.
- 9c6503620d07c0fa1899…ee62beNot checkedno saved verdict
- ca7591e5c489e3cf5bfd…e1c956Not checkedno saved verdict
- f17c034e96390254c7bf…6d7435Not checkedno saved verdict
Chapter 04
Technical details
None of the 61 antivirus engines that checked it flag it.
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
- Oct 26, 2026, 7:10 AM UTC
- SHA-256
6c0d8e53ec040ca8b5440198878bee20bd5fc6a8e83d3309b442044b9158597a- SHA-1
3417b822cf5438197de6db634cb48ec495ba097b- MD5
929cae8f91da78eddaa018798809bbeb
About this file
TBOKwinOptimizer.bat is a DOS batch file file of 210.4 kB.
- Type and size
- DOS batch file · 210.4 kB
- Signer
- Not applicable
- First seen
- Oct 24, 2026On VirusTotal.
- Submitted by
- 12 distinct sources
First scanned
Antivirus consensus
0 of 61 engines flagged this file
14 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-232 engines0flagged
- Low-trust11 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
- SentinelOneNo result
- SkyhighClean
- SophosClean
- SUPERAntiSpywareClean
- SymantecClean
- SymantecMobileInsightNo result
- TACHYONClean
- tehtrisNo result
- TencentClean
- TrapmineNo result
- TrellixENSClean
- TrendMicroClean
- TrendMicro-HouseCallClean
- TrustlookNo result
- VaristClean
- VBA32Clean
- VIPREClean
- VirITClean
- ViRobotClean
- WebrootNo result
- XcitiumClean
- YandexClean
- ZillyaClean
- ZoneAlarmClean
- ZonerClean
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.
Sample invoked a known UAC auto-elevation helper (fodhelper / eventvwr / sdclt / wsreset / cmstp / etc.) with custom arguments. These binaries are abused via registry-hijack UAC bypasses; legitimate software never calls them with arguments.
EvidenceC:\Windows\System32\fltMC.exe "C:\Windows\System32\fltmc.exe"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 6 questions people ask most about this file.
Is TBOKwinOptimizer.bat safe, or is it malware?
What is TBOKwinOptimizer.bat?
How many antivirus engines detected TBOKwinOptimizer.bat?
I already downloaded and ran TBOKwinOptimizer.bat — what should I do?
What is the SHA-256 hash of TBOKwinOptimizer.bat?
How up to date is this analysis of TBOKwinOptimizer.bat?
Community
Member reviews and reports for this exact file hash.