|Type||Ransomware, Ransomware Trojan|
|Short Description||DirtyDecrypt encrypts the victim’s files and asks for payment.|
|Symptoms||The user’s PC is locked and his files cannot be reached.|
|Distribution Method||Via exploit kits and visiting adult content websites.|
|Detection tool||Download SpyHunter, to See If Your System Has Been Affected By dirtydecrypt.exe|
|Data Recovery Tool||Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.|
A Trojan Ransomware called DirtyDecrypt, also known asTrojan.Ransomcrypt.D, Revoyem and dirtydecrypt.exe has been around since July 2013. According to new data, the ransomware has been recently revived. Due to its malicious character, many users refer to the threat as DirtyDecrypt virus but it is indeed a Ransomware Trojan. Various antivirus programs detect the threat under different aliases. Hence, its detection rate is quite high. Revoyem mainly targets computers located in Europe and the United States. However, there is no guarantee that the attacks won’t spread to other continents. After all, we have been witnessing an extensive and aggressive ‘ransomware revolution’, thanks to which many users and businesses have lost millions of dollars.
DirtyDecrypt, dirtydecrypt.exe Detection and Description
According to analysis by Symantec, the systems affected by DirtyDecrypt include:
- Windows 2000
- Windows 7
- Windows NT
- Windows Vista
- Windows XP
Once Revoyem is activated, it may copy itself to these locations:
- %ProgramFiles%\Adobe\[RANDOM CHARACTERS].exe
- %Temp%\[RANDOM CHARACTERS].exe
- %UserProfile%\Local Settings\Application Data\Identities\[RANDOM CHARACTERS].exe
Also, in most of the cases, DirtyDecrypt locks the computer and displays a ransomware image named “DIRTY ALERT.” The message may look like this:
As visible, the user’s image, video, MS Office and PDF files are encrypted and cannot be open. Typically, to have his files decrypted, the victim will be asked for payment. One of the following payment methods should be used:
However, we would like remind you that paying the ransom doesn’t mean that the files will be safely deciphered. The safest way to stay secure against file-encrypting threats is periodically backing up important files via cloud services or external memory devices.
DirtyDecrypt.exe Distribution, Encryption Process and Payload
Symantec has reported that the following types of files may be encrypted by Revoyem:
→7z, avi, doc, docm, docx, jpeg, jpg, mpeg, mpg, pdf, png, rar, rtf, wmv, xls, xlsm, xlsx, zip
According to security researchers, DirtyDecrypt is usually spread via porn websites. Security blogger Kafeine has unveiled that once at the porn site, the victim will be redirected to a Child Porn themed page with highly disturbing image content. Styx Exploit Kit is most likely used for the distribution process. Researchers at Enigma Software have called Styx a ‘dangerous Web based malware infection’ used to spread malicious threats. In the present case, Styx is employed to drop the DirtyDecrypt ransomware that locks the computer. A message informing the victim that they just have viewed illegal content even if they have been driven to it against their will may also be presented.
DirtyDecrypt.exe Removal Process, File Decryption and Prevention
As we always highlight, the safest ways to be protected against ransomware are:
- Sustaining and frequently updating a professional anti-malware program on the system.
- Periodically backing up important files via external memory devices or cloud services.
Also, here are easy step-by-step instructions to enable the Microsoft Windows Defense
feature to backup your files and have the ability to restore them immediately to an
earlier state before their encryption:
1) Download a particular anti-malware scanner and remove the dirtydecrypt.exe files from the computer.
2) Open Properties by right-clicking on My Computer
and then choosing it.
3) Open Advanced System Settings
4) Go to System Protection.
6) Click Configure and then click on Turn On System
7) Click OK and you are all set
After you have this protection switched on, if something happens to your data, you
may be able to restore them, using those steps:
1) Right-Click the encrypted file and then choose Properties.
2) Click the Previous Versions button.
3) At this point, you should see an earlier version of the file with a ‘last
4) Mark the file with the mouse and then choose the down-right button that says
If your files were previously encrypted, this software might leave some files, such
as registry values and others on your system. That is why recommendations are to
download a particular anti-malware program that will ensure your protection and
terminate any traces of the malicious software.
Spy Hunter scanner will only detect the threat. If you want the threat to be automatically removed, you need to purchase the full version of the anti-malware tool.Find Out More About SpyHunter Anti-Malware Tool / How to Uninstall SpyHunter
Attention! SensorsTechForum strongly recommends that all malware victims should look for assistance only by reputable sources. Many guides out there claim to offer free recovery and decryption for files encrypted by ransomware viruses. Be advised that some of them may only be after your money.
As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.
How to recognize trustworthy sources:
- Always check "About Us" web page.
- Profile of the content creator.
- Make sure that real people are behind the site and not fake names and profiles.
- Verify Facebook, LinkedIn and Twitter personal profiles.
- Guide 1: How to Remove dirtydecrypt.exe from Windows.
- Guide 2: Get rid of dirtydecrypt.exe from Mac OS X.
How to Remove dirtydecrypt.exe from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove dirtydecrypt.exe
Step 2: Uninstall dirtydecrypt.exe and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it.
Step 3: Clean any registries, created by dirtydecrypt.exe on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by dirtydecrypt.exe there. This can happen by following the steps underneath:
Step 4: Scan for dirtydecrypt.exe with SpyHunter Anti-Malware Tool
Step 5 (Optional): Try to Restore Files Encrypted by dirtydecrypt.exe.
Ransomware infections and dirtydecrypt.exe aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Get rid of dirtydecrypt.exe from Mac OS X.
Step 1: Uninstall dirtydecrypt.exe and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove dirtydecrypt.exe via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove malware from your Mac
When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Step 3 (Optional): Try to Restore Files Encrypted by dirtydecrypt.exe on your Mac.
Ransomware for Mac dirtydecrypt.exe aims to encode all your files using an encryption algorithm which may be very difficult to decode, unless you pay money.
This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files, but only in some cases. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
What is dirtydecrypt.exe ransomware and how does it work?
dirtydecrypt.exe is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.
Many ransomware viruses use sophisticated encryption algorithm how to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.
How does dirtydecrypt.exe ransomware infect my computer?
Via several ways.dirtydecrypt.exe Ransomware infects computers by being sent via phishing e-mails, containing virus attachment.
This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.
After you download and execute this attachment, a drive-by download occurs and your computer is infected with the ransomware virus.
Another way, you may become a victim of dirtydecrypt.exe is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.
How to open .dirtydecrypt.exe files?
You can't. At this point the .dirtydecrypt.exe files are encrypted. You can only open them once they are decrypted.
Decryptor did not decrypt my data. What now?
Do not panic and backup the files. If a decryptor did not decrypt your .dirtydecrypt.exe files successfully, then do not despair, because this virus is still new.
One way to restore files, encrypted by dirtydecrypt.exe ransomware is to use a decryptor for it. But since it's a new virus, advised that the decryption keys for it may not be out yet and available to the public. We will update this article and keep you posted as soon as this decryptor is released.
How Do I restore ".dirtydecrypt.exe" files (Other Methods)?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .dirtydecrypt.exe files.
These methods are in no way 100% guarantee that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How do I get rid of dirtydecrypt.exe ransomware virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti malware software. It will scan for and locate dirtydecrypt.exe ransomware and then remove it without causing any additional harm to your important .dirtydecrypt.exe files.
Also, keep in mind that viruses like dirtydecrypt.exe ransomware also install Trojans and keyloggers that can steal your passwords and accounts. Scanning your computer with an anti-malware software will make sure that all of these virus components are removed and your computer is protected in the future.
What to Do If nothing works?
There is still a lot you can do. If none of the above methods seem to work for you, then try these methods:
- Try to find a safe computer from where you can can login on your own line accounts like One Drive, iDrive, Google Drive and so on.
- Try to contact your friends, relatives and other people so that they can check if they have some of your important photos or documents just in case you sent them.
- Also, check if some of the files that were encrypted it can be re-downloaded from the web.
- Another clever way to get back some of your files is to find another old computer, a flash drive or even a CD or a DVD where you may have saved your older documents. You might be surprised what will turn up.
- You can also go to your email account to check if you can send any attachments to other people. Usually what is sent the email is saved on your account and you can re-download it. But most importantly, make sure that this is done from a safe computer and make sure to remove the virus first.
More tips you can find on our forums, where you can also asks any questions about your ransomware problem.