Scapa de Windows Tweaking Utility – Ghid pentru Devirusare

Programele de optimizare a PC-ului de tip rogue incep sa fie promovate prin email-uri primite, ce contin un link infectat.Windows Tweaking Utility este un astfel de program. Email-urile contin link-ul:

http://khalys.imingo.net/Iindex.html

Odata accesat va fi afisata o fereastra falsa “My computer” cu o scanare in curs de desfasurare.
Apoi va apare indicatia de a instala un program de remediere a erorilor din sistem (freesystemscan.exe). Programul va afisa numeroase alerte false si va efectua scanari ale PC-ului detectand in mod eronat sute de infectii.

Toate acestea au scopul de a induce in eroare utilizatorul, cu scopul de a achizitiona acest program. Fisierele detectate sunt fie inexistente, fie curate, iar alertele nu trebuie luate in considerare.

Pentru a scapa de acest nepoftit cititi detaliile de mai jos:

Windows Tweaking Utility

Orice incercare de a rula un program legitim va duce la afisarea unei erori false, dupa cum urmeaza:

Threat prevention solution found
Security system analysis has revealed critical file system vulnerability caused by severe malware attacks.
Risk of system files infection:
The detected vulnerability may result in unauthorized access to private information and hard drive data with a serious possibility of irreversible data loss and unstable PC performance. To remove the malware please run a full system scan. Press ‘OK’ to install the software necessary to initiate system files check. To complete the installation process please reboot your computer.

De asemenea, afiseaza urmatoarele mesaje:

System Security Warning
Attempt to modify register key entries is detected. Register entries analysis is recommended.

Warning!
Location: c:\windows\system32\taskmgr.exe
Viruses: Backdoor.Win32.Rbot

Programul creeaza urmatoarele fisiere\foldere:

  • %UserProfile%\Application Data\Microsoft\<random>.exe

Ii sunt asociate cheile registry:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\afwserv.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avastsvc.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avastui.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\egui.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ekrn.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msascui.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msmpeng.exe “Debugger” = ‘svchost.exe’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe “Debugger” = ‘svchost.exe’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings “WarnOnHTTPSToHTTPRedirect” = ‘0’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings “WarnOnHTTPSToHTTPRedirect” = ‘0’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore “DisableSR ” = ‘1’

DEVIRUSARE:

1. Porniti PC-ul in Safe Mode with Networking. Pentru aceasta restartati PC-ul si apasati tasta F8 de mai multe ori inainte de incarcarea Windows-ului pana obtineti ecranul de mai jos.
Dupa alegerea modului mentionat apasati tasta Enter si asteptati incarcarea completa a Windowsului.

safe mode

2. Descarcati si rulati rkill.com. Acest lucru este ncesar pentru a opri procesul activ folosit de virus. Veti primi probabil o atentionare ca rkill.com este infectat. Ignorati-l, este doar o alarma falsa generata de Windows Oversight Center.

3. Rulati fisierul Shell.reg: http://www.faravirusi.com/utile/shell.reg

4. Descarcati si instalati Malwarebytes Anti-Malware. Scanati PC-ul complet si stergeti la final infectiile gasite apasand Remove selected.

Daca ai reusit sa cureti aceasta infectie, iti recomand sa cumperi versiunea PRO a Malwarebytes Anti-Malwarepentru a te proteja si pe viitor de astfel de amenintari, avand in vedere ca nu au fost detectate\eliminate de antivirusul tau actual.

Administrator FaraVirusi.com
voluntar al Comodo Malware Research Team, expert Malwarebytes Anti-Malware

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