• How to Get Rid of CryptoDefense From Your PC? (Ransomware Removal)

    “Today my PC was infected by a virus called CryptoDefense software that pops up a text box stating all files on my computer are encrypted and tells me what to do. I didn’t believe what the box stated and had it disconnected from the network. Then it said that it cannot get to the decrypt site. How can I get rid of the threat from my computer?”

    Details of CryptoDefense

    CryptoDefense, also known as HOW_DECRYPT.txt Ransomware, is classified as ransomware that attacks all versions of Windows operating systems including Windows XP, Windows Vista, Windows 7, and Windows 8. It often gets into your computer silently without permission when you surf the Internet. Usually, it comes bundled with other applications on the Internet. Once arrives on the PC, the malware will start to carry out a series of harmful actions. Usually, it displays a box claiming that all files including videos, photos and documents on the computer are decrypted by CryptoDefense software. Then you may find files with file extensions like .doc, .xls, .bmp and so on are affected. The information in the box guides you to download and install a specified browser and open a specific website in order to decrypt the files.

    See the screenshot of the box displayed by the ransomware:

    CryptoDefense

    Once installed on the targeted computer, the malware creates a How_Decrypt.txt and How_Decrypt.html file in every folder that a file was encrypted. The HTML and TXT files will contain instructions on how to access a payment site that can be used to send in the ransom. It also creates a HKCU\Software\<unique ID>\ registry key and stores various configuration information in it. It will also list all the encrypted files under the HKCU\Software\<unique ID>\PROTECTED key. Then it will scan your computer and encrypt data files such as text files, image files, video files, and office documents and connect to the Command and Control server and uploads your private key. It may also delete all Shadow Volume Copies so that you cannot restore your files from the Shadow Volumes. This means you will only be able to restore your files by restoring from backup or paying the ransom. In some cases the threat does not properly clear the shadow copies, so you may want to use the instructions below to see if you can restore from them.

    Once you attempt to decrypt the files on your PC, the ransomware will require you to pay for the decryptor. This payment website is located on the Tor network, and the PC user can only make the payment in Bitcoins. In order to buy the decryptor for the files, you need to pay a supposed fine of 500 USD in Bitcoins. If you don’t pay the fine within 4 days, it will double to 1,000 USD. It also declares it will delete your private key and you will no longer be able to decrypt the files not buy a decryptor within one month. The files are encrypted using RSA-2048 encryption, which makes you impossible to decrypt via brute force methods. At the beginning of each encrypted file, will be two strings of text. The first string is !crypted! and the second string is a unique identifier for the compromised PC. An example identifier is 18177F25DA00CD4CBC3D1b8B9F55F018. All encrypted files on the same PC will include the same unique identifier. This identifier is possibly used by the Decrypt Service website to recognize he private key that can be used to decrypt the files when executing a test decryption.

    How to get rid of CryptoDefense from your computer?

    Option1: Download and install a professional malware removal program on your computer.

    The malware may disable your browser. If you’re using IE, for example, and having problems downloading the malware removal tool, you should open Firefox, Chrome or Safari browser instead.Or you can use a removable media to copy the tool from another clean computer then install it on your infected computer and run it to scan your computer.

    Option2: Restore your computer to a date and time before the infection.

    1. Restart your computer and enter Windows in “safe mode with command prompt”. To properly enter that mode, repeatedly press F8 upon the opening of the boot menu and use arrow keys to highlight Safe Mode with Command Prompt and then press Enter.

    safe-mode-with-command-prompt2

    2. Once the Command Prompt appears type “explorer” and hit Enter key. Sometimes during infections of malware and viruses you only have the opportunity to do this within 2-3 seconds. In some cases if this is not performed during the allotted seconds, viruses such as the FBI MoneyPak ransomware virus will not allow you to type “explorer” anymore.

    explorer

    3. Once Windows Explorer shows up browse to:

    Win XP: C:\windows\system32\restore\rstrui.exe and press Enter

    Win Vista/Seven: C:\windows\system32\rstrui.exe and press Enter

    rstrui.exe

    4. Follow all steps to restore or recover your computer system to an earlier time and date, before infection to complete Windows restore.

    system-restore

    Then delete the files and registry entries related to the ransomware.

    %UserProfile%\Desktop\HOW_DECRYPT.HTML

    %UserProfile%\Desktop\HOW_DECRYPT.TXT

    %UserProfile%\Desktop\HOW_DECRYPT.URL

    HKEY_CURRENT_USER\Software\<unique id>

    HKEY_CURRENT_USER\Software\<unique id>\PROTECTED

    HKEY_CURRENT_USER\Software\<unique id> “finish” = “1”

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  • How to Completely Remove Association of Chief Police Officers Virus?

    If your computer is infected with Association of Chief Police Officers virus, you will see a bogus alert every time Windows starts. The alert claims that your Windows system has been blocked for some security reasons. You won’t be able to access to the programs and files until you install some additional paid security updates. In fact, the information displayed by the virus is totally false. What you need to do is to remove Association of Chief Police Officers virus from the computer.

    Know more about Association of Chief Police Officers virus

    Association of Chief Police Officers virus is a computer virus that classified as ransomware. Once it gets into your computer, it will display a fictitious page which pretends to be from the UK police and says that your PC has been blocked due to several reasons. You will see the following information:

    “Association of Chief Police Officers

    Attention!

    For security reasons, your Windows system has been blocked!

    The reason can be visiting the infected or pornographic sites. The computer has approached to critical condition because of which the system can break and all data can be lost. For having possibility to restore system, you should install the additional security updates.

    This paid update is intended for very infected systems. This update completely protects your system from viruses and malware, stabilizes your computer system and avoids data loss.”

     fake-alert

    The virus states that your PC may visit the malicious websites and invite some malware that put your system at risk. It locks you out of your computer and displays a lock screen asking you to enter a code for transfer 100£ Ukash or PaySafecard systems. The virus is, in fact,

    a scam that aims to swindle you out of money. If you pay for the so-called paid update to repair the infected system, you just be taken in by the cyber criminals and get nothing helpful for PC. Under no circumstance should you transfer any money, for your personal information may be stolen and exploited by cyber criminals and you may be involved in identity theft or other troubles.

    Follow the instructions below and you will be access to the computer system again.

    How to get rid of Association of Chief Police Officers virus from your computer?

    Method1: Restore your computer to an earlier time.

    Step1: Restart your computer and then keep pressing until you get the Advanced Boot Options screen.

    restart

    Step2: Use the up and down arrow keys to highlight Safe mode with Command prompt option.

    safe-mode-with-command-prompt2

    Step3: At the command prompt, type cd restore, and then press Enter key.

    Step4: Type rstrui.exe at the command prompt and then press Enter key

    cd-restore

    Step5: The System Restore window will start. You need to select a restore point previous to this infection and then click Next button.

    system-restore

    Step6: After the system restore is completed, you will be able to enter the PC in normal mode. Then run your antivirus software to perform a full scan of your PC.

    Method2: Use a professional malware removal tool to automatically delete the virus.

    In addition to the method above, you can also get rid of the malware by following the several steps below:

    Restart your PC and constantly tap F8 key on the keyboard. When the Advanced Boot Options screen appears, select Safe Mode with Networking with the arrow keys. Then press Enter.

    safe-mode-with-networkking1

    Download a reliable removal tool on your PC.

    Install the tool and scan your computer with it.

    Delete all the threats found on your PC and delete them with mere several clicks of the mouse.

    It is recommended those whose computers are infected with stubborn malware programs to use a powerful removal tool to get rid of them fully and totally without harming the computer system. If your PC is unfortunately infected with such ransomware, follow the methods in this post to deal with it. You can quickly delete Association of Chief Police Officers virus with a third-party malware removal program.

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  • Efficient Guide on How to Remove Suomen Poliisi – Removal Instructions

    Sometimes, you download and install Suomen Poliisi on computer by chance. As a result, you would always receive pop-up reports to update programs and need to pay some money on the product update. In fact, this kind of nasty tool is highly recommended to remove from the computer completely. It is created by some remote hijackers or cyber criminals, which aims to blackmail your money and destroy the entire computer system. To get rid of all the malicious activities, you need to take effective methods to remove Suomen Poliisi totally.

    pic

    Information about Suomen Poliisi

    As a matter of fact, Suomen Poliisi is a typical ransomware, which is designed and created to take money from computer users for business purpose. Thus, it is an extremely risky threat on computer. Once it is installed on system, there would be some third-party malware or spyware on your infected PC. It can block the whole PC system so that you will happen to get the annoying alert messages. Additionally, this nasty software can result in the following bad effects :
    • Missing system files and get pc error messages
    • Disabled certain programs and processes
    • Blue screen, slow pc performance and unstable system
    • It will collect the valuable information for the remote hackers to get illegal benefits.
    • Windows registry will be filled with vicious entries
    • Computer will be locked without your approval
    • You will lost money if you trust the fake alert messages

    How to remove Suomen Poliisi effectively?

    If you are a victim of the virus infection, you may wanna know the right ways to remove it. Generally speaking, there are some efficient methods listed as below:

    Method 1. Uninstall Suomen Poliisi manually

    To remove any program in computer, you can use the Windows build-in uninstaller to solve problem.
    For Windows XP:
    Step 1. Click Start -> Control Panel.

    contro-l panel
    Step 2. Then, locate and double click Add/Remove Programs.

    add-remove-programs
    Step 3. Find out this program in the showing list, click “Change/Remove” button.

    remove-p-xp
    Step 4. Click Yes to ensure the program uninstall.
    Step 5. Restart computer once the above steps finished.

    For Win7:
    Step 1. Click on Start button, then select Control Panel.

    control-p-7
    Step 2. Select “Uninstall a program” under “Programs” icon to enter Programs and Features option.

    uninstall-program
    Step 3. Locate the program in the list box, and click Uninstall tab.

    uninstall-p-7
    Step 4. Click Yes to make sure your uninstallation.
    Step 5. Reboot system as soon as the above steps accomplished.
    After the above uninstallation, you need to delete the related files in the default location when you installed it.

    Method 2. Clean up computer and remove related files

    Step 1. Restart computer, keep pressing F8 key to access Windows Advanced Option Menu.

    f8-key

    Step 2. Use the arrow keys to select “Safe Mode With Networking” and press Enter.

    safe-mode-w-n

    Step 3. Press Ctrl+Alt+Delete to open Windows Task Manager.

    c-a-d
    Step 4. Browser to select the malicious processes and click “End Process” button.

    end-process
    Step 5. Exit task manager, click Win key+R to open Run.

    Win+R

    Step 6. Type in “regedit” and click OK to open registry editor.

    xp-regedit
    Step 7. Locate the left pane, and go to delete the related entries:
    HKCU\Software\Microsoft\Windows\CurrentVersion\Run\Random.exe
    HKLM\Software\Microsoft\Windows\CurrentVersion\Run\Random.exe
    HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\random.exe\

    Method 3. Restore computer to the last good configuration

    Step 1. Restart computer and keep pressing F8 key before Windows loads.

    f8-key
    Step 2. Select “Last Known Good Configuration” (your most recent settings that worked) and press Enter.

    last-known-good-

    Step 3. Restart your computer when the above steps finish

    Method 4. Wipe out Suomen Poliisi with a reliable removal tool

    In some occasions, it is not recommended to remove stubborn virus manually if you are a computer newbie. As you may know, registry is a core component of windows operating systems, which is responsible for saving the necessary and important configurations and options for the whole system. If you delete any valid registry entry by mistake, your computer system may end up even stopping working. Thus, you can use a professional and powerful third-party tool to help delete Suomen Poliisi  effectively and totally. Here, out experts suggest you use an excellent and reputable tool called Mighty Uninstaller that is designed to scan, detect and clean up all the potential malware without damages to deal with the computer security issues.

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