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shb_kortlasare.exe is an unidentified Windows executable, not a documented Windows component or clearly attributed commercial program. The only exact indexed record is a January 2021 Farbar Recovery Scan Tool log showing a scheduled task launching C:UsersVDesktopshb_kortlasare.exe through C:Windowssystem32pcalua.exe. That record does not prove every file with this name is the same, but it is enough to treat a copy on your PC as untrusted until its source, path, signer, hash and scan results agree.
Do not open the file to test it. First preserve details, inspect and scan it, then find any scheduled task or other persistence. If Windows reports that the file cannot be found, an orphaned task may still be calling the deleted path. Remove only the matching task, investigate any recurrence, and use SFC or DISM only when Windows system-file corruption is actually present.
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What is shb_kortlasare.exe?
No Microsoft or software-vendor documentation identifies shb_kortlasare.exe as a Windows component or a named commercial application. The only exact indexed occurrence is a January 2021 Farbar Recovery Scan Tool log posted on Spybot Forums. It records a scheduled-task action of C:Windowssystem32pcalua.exe -a C:UsersVDesktopshb_kortlasare.exe -d C:UsersVDesktop.
That log establishes one historical copy, one location and one persistence method. It does not establish that every executable with this filename is identical, nor does it identify the original publisher. A filename can be copied or changed, so the name alone cannot establish whether your file is legitimate.
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What does the name tell you?
Very little. The string does not match a documented Windows process, and there is no authoritative publisher attribution for it in the available record. Treat the executable as an unknown third-party file until local evidence shows otherwise.
Is shb_kortlasare.exe safe or a virus?
There is not enough evidence to assign this exact filename to a particular malware family, but it should be handled cautiously. The historical record placed it on a user’s Desktop and launched it from a scheduled task without recording a publisher or digital signature. Those details are warning signs, not proof of infection.
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Do not confuse this executable with the .SHB or .SHS file extensions. F-Secure’s SHS guidance says, “There is no virus by this name,” while also warning that SHS and SHB scrap-object files can be used as Windows trojans and should not be executed when received through the web or email. That advice concerns those file types; it does not certify an unrelated .exe named shb_kortlasare.exe.
What evidence should change your risk assessment?
- Origin: a documented installer or known software package is easier to explain than an unexplained download or email attachment.
- Location: the Desktop, Downloads folder or a temporary directory deserves more scrutiny than a verified program folder, although location alone proves nothing.
- Signer: a valid signature matching the expected publisher is useful evidence. An unknown, invalid or missing signature increases uncertainty.
- Security result: a Microsoft Defender detection should remain quarantined while you investigate.
- Persistence: a scheduled task, startup entry, service or browser extension that launches the file indicates that simply deleting the executable may not solve the problem.
Why does shb_kortlasare.exe appear at startup?
The most likely explanation for a recurring popup is a persistence entry that still points to the executable. In the 2021 log, the scheduled task remained configured to call the Desktop copy. If the file was later quarantined or deleted, Windows could continue attempting the action and display a “file not found” message.
Other persistence locations can produce a similar symptom, including Startup apps, Run registry values, services, browser extensions and unfamiliar remote-access software. Do not assume that a startup message identifies the original infection or that the visible popup is the only remaining component.
How should I investigate shb_kortlasare.exe safely?
Use a non-execution workflow. Record evidence first, inspect the file and its launch points, and scan before deciding whether to remove anything.
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1. Do not run or restore the file
Do not double-click the executable, choose “Run” from a prompt, or restore it from quarantine merely because the filename looks familiar. If it is still present, note its complete path, file size, creation time, download source and any security-alert text. If the file is already quarantined, preserve the detection name and timestamp.
2. Inspect Properties and the signer
Right-click the file, select Properties, and review the Details tab. Open Digital Signatures if that tab exists, inspect the signer and signature status, and compare the publisher with the software you expected to install. A valid signature is helpful but not an absolute guarantee; an unknown or invalid signer is a reason to stop and investigate further.
3. Calculate a SHA-256 hash without opening the file
In PowerShell, you can ask for the path and calculate a hash without launching the executable:
$p = Read-Host 'Enter the complete path to the file'; Get-FileHash -Algorithm SHA256 -LiteralPath $pSave the resulting hash with the path, size, timestamps and alert details. A hash is an identifier for that exact file; by itself it does not prove that the file is safe.
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Use the Windows Security or Microsoft Defender file-scan option on the file. If Defender detects it, leave it quarantined while you examine persistence. A clean single-file result is not a complete investigation if the executable ran, returned after reboot or created other symptoms, so continue with a full scan in those situations.
5. Check every likely launch point
Open Task Scheduler and search task actions for shb_kortlasare.exe, pcalua.exe or the complete path you recorded. Also review Startup apps, Run keys, services, browser extensions and unfamiliar remote-access software. Write down the task name, action, trigger and account before changing anything; those details are useful if the entry returns or you need support.
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How do I remove the shb_kortlasare.exe scheduled task?
Remove only the task whose action contains the suspicious executable path. Do not delete unrelated tasks by GUID, and do not remove pcalua.exe itself simply because it appears in the command line.
Disable the task for a reversible test
- Press the Windows key, type Task Scheduler, and open it.
- Select Task Scheduler Library and inspect tasks one at a time. Use the Actions tab to find an action containing
shb_kortlasare.exe,pcalua.exeor the file’s full path. - Export the matching task or take a screenshot of its name, triggers and action. This preserves evidence before removal.
- Right-click that specific task and choose Disable.
- Restart Windows and confirm whether the popup stops. Disabling first gives you a reversible test and helps distinguish this task from another startup source.
Delete the confirmed orphaned or malicious task
After you have established that the disabled task is responsible and that its action is orphaned or unwanted, right-click the same task and choose Delete. Deleting a scheduled task removes the schedule entry; it does not delete the program named in the action. If the executable still exists, handle it through quarantine or your security-response process rather than assuming task deletion removed it.
Delete it from an elevated command prompt
Microsoft’s documented command is:
schtasks /delete /tn "<task name>" /fReplace the task-name value with the exact name you recorded in Task Scheduler, then run the command in an administrator Command Prompt. The command removes the task from the schedule without deleting the program it runs. Keep the task name and action in your notes.
What if the task recreates itself?
Stop repeatedly deleting the visible task or executable. A recreated task suggests another persistence mechanism, such as a service, startup entry or second executable. Run a full Microsoft Defender scan, review the other launch points, and preserve the changing task names and actions for a broader malware-persistence investigation.
What should I do if Windows says it cannot find shb_kortlasare.exe?
This message commonly means that a launch entry survives after the file was deleted or quarantined. Find the entry first rather than downloading a replacement executable or restoring the old one.
- Record the exact wording of the popup and when it appears: at sign-in, after a reboot, on a schedule or when a particular application opens.
- Search Task Scheduler actions for the filename, its full path and
pcalua.exe. Disable the matching task and restart to test. - If the message continues, inspect Startup apps,
Runkeys, services, browser extensions and unfamiliar remote-access software. - Once the responsible entry is identified, delete only that entry and rescan the computer.
- If the task or popup returns, treat the recurrence as an unresolved persistence problem instead of a harmless broken shortcut.
Do not download a file with the same name to satisfy the task. A replacement could execute unknown code while leaving the original persistence mechanism in place.
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What if I already ran shb_kortlasare.exe?
Act as though the computer may have been exposed until scans and review provide a reasonable explanation. Stop using email, banking, work, game and cryptocurrency accounts on the suspect PC while you investigate.
- Preserve the filename, complete path, download source, execution time, security alerts and any new processes or popups.
- Run a full Microsoft Defender scan, restart the computer, and scan again if the popup or scheduled task returns.
- Review newly installed software, scheduled tasks, services, browser extensions, proxy and DNS settings, and remote-access tools.
- If credential theft is plausible, change passwords and revoke active sessions from a clean device, not from the potentially affected computer.
- Consider Microsoft Safety Scanner in Safe Mode as an additional check. A Microsoft Q&A independent advisor recommends that sequence, but community advice is not a guarantee that one scan proves a system clean.
If you use the computer for work or handle sensitive information, involve your organization’s IT or incident-response staff. Give them the preserved hash, task action, timestamps and security detections instead of deleting evidence first.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Should I run SFC or DISM to fix this error?
Use Windows repair commands only when Windows itself shows protected-file or component-store corruption. They do not identify or disinfect an unknown third-party executable, so malware scanning and persistence cleanup come first.
Run System File Checker for protected-file corruption
Open an administrator Command Prompt and run:
sfc /scannowMicrosoft documents that SFC scans protected Windows system files and repairs incorrect versions when possible. Let it finish, note the result, and restart if Windows requests it. SFC will not remove a scheduled task that points to shb_kortlasare.exe.
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Use DISM for the Windows image or component store
Run these commands from an administrator Command Prompt when Windows servicing or component-store health is in question:
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /RestoreHealthScanHealth checks the image in detail, CheckHealth reports whether corruption has been flagged, and RestoreHealth attempts repair. DISM addresses the Windows image; it is not a substitute for Defender scanning or scheduled-task cleanup.
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Which response fits your situation?
| Situation | Best next action | Why |
|---|---|---|
| The file was never run, has an explainable source, a matching valid signer and clean scans | Keep it isolated while you verify the associated software; do not execute it solely to test it. | Those checks reduce uncertainty but do not make the filename itself authoritative. |
| The file is on the Desktop or arrived unexpectedly, with no recognizable publisher | Leave it quarantined or isolated, record its hash and investigate persistence. | The historical record also involved a Desktop copy and no recorded publisher. |
| Windows shows a missing-file popup after deletion or quarantine | Find, disable, test and then delete the specific scheduled task or other launch entry. | An orphaned persistence entry can continue calling a path that no longer exists. |
| The executable ran or returns after reboot | Disconnect sensitive account use, run full and repeat scans, review persistence and consider clean-device credential changes. | Recurrence or execution raises the consequences of an incomplete cleanup. |
| Windows reports protected-file or component-store corruption | Use SFC and the documented DISM checks and repair commands after security cleanup. | These tools repair Windows components, not unknown third-party executables. |
No published prevalence or infection-count statistic for this exact filename was identified. Avoid treating a search hit, a filename match or a single scan result as proof that all copies are either malicious or harmless.
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Frequently Asked Questions
Can a scheduled task keep running after the executable is deleted?
Yes. The task definition is separate from the program file, so Windows can continue attempting the configured action and report that the path is missing. Export or record the task before disabling it so you can identify what created it if it returns.
Should I change my passwords if I only saw a missing-file popup?
A popup alone does not show that the executable ran or that credentials were exposed. Prioritize scanning and persistence review; change passwords and revoke sessions from a clean device if execution, suspicious account activity or other evidence makes credential theft plausible.
Is there a known infection rate for shb_kortlasare.exe?
No published prevalence or infection-count statistic for this exact filename is available. The documented evidence is a single January 2021 scheduled-task incident record, which cannot be generalized to every copy found today.
What details should I give a technician about this file?
Provide the complete path, SHA-256 hash, size, creation time, download source, security-alert text, task name and exact task action. Include when the popup appeared and whether the file was executed, quarantined or deleted; these details help separate an orphaned entry from active persistence.
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