A blog post created in order to help you by showing how to remove Trick or Treat ransomware from your computer system and then restore files encrypted by it.
A ransomware virus, that is Halloween themed has appeared in the wild, massively infecting computers. The malware may lock the screen of your computer and also encrypt the files on it, making them no longer able to be opened. After this has been done Trick or Treat ransomware asks for a ransom to be paid to the cyber-criminals behind it in order to have your files decrypted once again.
|Threat Name||Trick or Treat|
|Main Activity||A new variant of the notorious Locky ransomware. Infects the computer after which encrypts important documents and holds them hostage until a ransom is paid.|
|Signs of Presence||Files are encrypted and a Halloween-themed image appears.|
|Spread||Via malicious e-mail spam and set of infection tools.|
|File Recovery||Download Data Recovery Software, to see how many files encrypted by Trick or Treat ransomware you will be able to recover.|
How Does Trick or Treat Work?
Bem, Trick or Treat works just like most ransomware viruses do – it enters your system via a compromised file or a malicious URL contained in a spam email. Be cautious when opening even the slightest suspicious email in your inbox, especially if it contains an attachment or an URL. Once the compromised file or URL is opened, the virus downloads to your system and the infection begins.Trick or Treat scans your files first. It searches your PC for the following extensions:
.PNG .PSD .PSPIMAGE .TGA .THM .TIF .TIFF .YUV .AI .EPS .PS .SVG .INDD .PCT .PDF .XLR .XLS .XLSX .ACCDB .DB .DBF .MDB .PDB .SQL .APK .APP .BAT .CGI .COM .EXE .GADGET .JAR .PIF .WSF .DEM .GAM .NES .ROM .SAV CAD Files .DWG .DXF GIS Files .GPX .KML .KMZ .ASP .ASPX .CER .CFM .CSR .CSS .HTM .HTML .JS .JSP .PHP .RSS .XHTML. DOC .DOCX .LOG .MSG .ODT .PAGES .RTF .TEX .TXT .WPD .WPS .CSV .DAT .GED .KEY .KEYCHAIN .PPS .PPT .PPTX ..INI .PRF Encoded Files .HQX .MIM .UUE .7Z .CBR .DEB .GZ .PKG .RAR .RPM .SITX .TAR.GZ .ZIP .ZIPX .BIN .CUE .DMG .ISO .MDF .TOAST .VCD SDF .TAR .TAX2014 .TAX2015 .VCF .XML Audio Files .AIF .IFF .M3U .M4A .MID .MP3 .MPA .WAV .WMA Video Files .3G2 .3GP .ASF .AVI .FLV .M4V .MOV .MP4 .MPG .RM .SRT .SWF .VOB .WMV 3D .3DM .3DS .MAX .OBJ R.BMP .DDS .GIF .JPG ..CRX .PLUGIN .FNT .FON .OTF .TTF .CAB .CPL .CUR .DESKTHEMEPACK .DLL .DMP .DRV .ICNS .ICO .LNK .SYS .CFG
Once detected, they are being encrypted by a powerful AES (Advanced Encryption Standard) cypher and the victim’s desktop wallpaper is changed to the Trick or Treat logo of the hacking group from Mr. Robot. E, that’s how you know you got attacked by Trick or Treat ransomware.
What to Do If You Notice the Ransom Note of Trick or Treat?
When you encounter the lockdown message, it means that your PC has already been encrypted. Even if you feel like you have no other choice but to pay, you should not do it. First and most important, even if you send the hackers your money, they may not unlock your PC. And since the Bitcoin system doesn’t allow refunds, you will not be able to get your money back. Second, your cash will increase the motivation of the hackers to develop more cyber threats like Trick or Treat ransomware.
There are a few ways that may help you recover the lost data for free. Although this Trojan sometimes deletes the shadow volume copies, you should still attempt to restore your PC to a date prior the infection. You should also try some free decryptors, but there is no guarantee that they will be efficient. The most important step is to eliminate Trick or Treat as soon as possible or else it may spread to other machines and cause more damage. It will be a challenge even for the experts to delete all traces of this ransomware manually, so you should consider using a dedicated anti-malware application.
What Will Be the Consequences After Trick or Treat Ransomware Enters?Trick or Treat performs a complex encryption process via advanced ciphers, which makes all personal files inaccessible. Contudo, this operation takes time. If you click on a corrupt email attachment or download fake software updates, which contain Trick or Treat, you may not experience any issues during the first few hours. Once the Trojan modifies the structure of your data, you will notice a lockdown message on your desktop. From this moment on, it will not be possible to open the locked files. If you lack a recent backup, you may lose crucial documents, photos, images, presentations, videos or other information. The only files that Trick or Treat may spare will likely be associated with essential Windows processes. If they get modified as well, your whole PC may fail to launch, which means the hackers will never receive any payments. You can easily find out which files are encrypted by Trick or Treat by their extension. The ransomware changes the default one to ‘.ransed’.
Booting in Safe Mode
1) Hold Windows Key and R
2) A run Window will appear, in it type “msconfig” and hit Enter
3) After the Window appears go to the Boot tab and select Safe Boot
Cut out Trick or Treat in Task Manager
1) Press CTRL+ESC+SHIFT at the same time.
2) Locate the “Processes” aba.
3) Locate the malicious process of Trick or Treat, and end it’s task by right-clicking on it and clicking on “End Process”
Eliminate Trick or Treat‘s Malicious Registries
For most Windows variants:
1) Hold Windows Button and R.
2) In the “Run” box type “Regedit” and hit “Enter”.
3) Hold CTRL+F keys and type Trick or Treat or the file name of the malicious executable of the virus which is usually located in %AppData%, %Temp%, %Local%, %Roaming% or %SystemDrive%.
4) After having located malicious registry objects, some of which are usually in the Run and RunOnce subkeys delete them ermanently and restart your computer. Here is how to find and delete keys for different versions.
For Windows 7: Open the Start Menu and in the search type and type regedit –> Open it. –> Hold CTRL + F buttons –> Type Trick or Treat Virus in the search field.
Win 8/10 users: Start Button –> Choose Run –> type regedit –> Hit Enter -> Press CTRL + F buttons. Type Trick or Treat in the search field.
Automatic Removal of Trick or Treat
Recover files encrypted by the Trick or Treat Ransomware.
Method 1: Using Shadow Explorer. In case you have enabled File history on your Windows Machine one thing you can do is to use Shadow Explorer to get your files back. Unfortunately some ransomware viruses may delete those shadow volume copies with an administrative command to prevent you from doing just that.
Method 2: If you try to decrypt your files using third-party decryption tools. There are many antivirus providers who have decrypted multiple ransomware viruses the last couple of years and posted decryptors for them. Chances are if your ransomware virus uses the same encryption code used by a decryptable virus, you may get the files back. Contudo, this is also not a guarantee, so you might want to try this method with copies of the original encrypted files, because if a third-party program tampers with their encrypted structure, they may be damaged permanently. Here are the vendors to look for:
Method 3: Using Data Recovery tools. This method is suggested by multiple experts in the field. It can be used to scan your hard drive’s sectors and hence scramble the encrypted files anew as if they were deleted. Most ransomware viruses usually delete a file and create an encrypted copy to prevent such programs for restoring the files, but not all are this sophisticated. So you may have a chance of restoring some of your files with this method. Here are several data recovery programs which you can try and restore at least some of your files: