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.adr File Virus (PyteHole) – Restore Files

Article created to display how to remove PyteHole also known as pyte-hole ransomware from your computer and how to restore files encrypted by this virus.

A new ransomware infection has appeared, appending the .adr file extension to the files encrypted by it. The virus aims to get victims whose files are encrypted to make a hefty ransom payoff in order to restore files that have been encrypted by it. In addition to this, the virus may also perform additional malicious activity such as obtain system information and delete backups. In case your computer has been infected by PyteHole ransomware, recommendations are to immediately remove this infection after which try to recover the encrypted files. If you are a victim, we advise you to read this article thoroughly.

Threat Summary

Name

.adr Virus

Type Ransomware
Short Description Encrypts documents, text files, pictures, database files, images, archives audio files, asking for a ransom payoff to make them openable again..

Symptoms Users may witness their PC to restart after which all the files that are important may be no longer openable with an added .adr file extension to them.
Distribution Method Via an Exploit kit, Dll file attack, malicious JavaScript or a drive-by download of the malware itself in an obfuscated manner.
Detection Tool See If Your System Has Been Affected by .adr Virus

Download

Malware Removal Tool

User Experience Join our forum to Discuss .adr Virus.
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.

How Does .adr PyteHole Infect

For the infection process, PyteHole ransomware may take advantage of a combination of tools that:

Combine software with malware (file joiners).
Conceal the malicious files from Windows and antivirus programs. (obfuscation software).
Perform the infection and drop the payload. (Trojans, viruses and other intermediary malware)
Spread the spam. (database of spam e-mail addresses, database of targeted e-mail accounts, spam bots or spamming services).

Such tools may result in the PyteHole virus being spread as a fake document, which is actually executable or a legitimate document that is combined with a malicious macro. Such are openly sent In .zip, .rar or other archives to victims. In addition to this, the e-mails may also be sent to include a deceiving messages that these files are actually payment receipts or other types of important files.

Other deceptive methods by which you may have become infected by this ransomware infection are the usage of fake updates, torrents with malicious files in them, such as malicious keygens and many other fraudulent executables uploaded online.

.adr File Virus – Infection Activity

Once a victim of the PyteHole .adr ransomware variant opens the infection file, the virus may connect to one of the following hosts:

  • 37.9.175.3
  • 88.221.14.137

Fromthere, the payload of PyteHole, which consists of an executable file, named pyte-hole.exe plus other files, may be dropped on in the following Windows Directories:

  • %AppData%
  • %Roaming%
  • %Local%
  • %LocalLow%
  • %SystemDrive%
  • %Windows%
  • %System32%

Then, the virus may modify the Windows Registry editor in order to make the malicious pyte-hole.exe executable run on system start-up and hence begin to encrypt your files:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

In addition to this, the PyteHole .adr virus may also delete any shadow volume copies and backups, by utilizing malicious code to run the following Windows Command prompt commands without the victim noticing:

→ process call create “cmd.exe /c
vssadmin.exe delete shadows /all /quiet
bcdedit.exe /set {default} recoveryenabled no
bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures

PyteHole .adr Ransomware – Encryption Process

The process of encrypting files that have been targeted by the PyteHole virus includes targeting files that are widely used. But the virus carefully skips files in important Windows folders, so that it won’t damage the operating system. Among the encrypted files may be the following:

→ “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”Source:fileinfo.com

Once the encryption process has completed, the PyteHole virus may append the .adr file extension to the encrypted files:

Remove .adr (PyteHole) Virus and Get Your Data Back

In order to fully erase this ransomware infection, one should follow the removal instructions underneath. They are specifically designed to first isolate PyteHole virus and then hunt down the files. For maximum effectiveness, malware researchers strongly advise downloading an advanced anti-malware tool before going into Safe Mode. It will automatically detect and remove all PyteHole ransomware associated files and protect your PC in the future.

In case you are looking for a way to restore the files that have been encrypted by this virus, we strongly advise you to focus on alternative methods, like the ones in step “2. Restore files encrypted by .adr Virus” below.

Manually delete .adr Virus from your computer

Note! Substantial notification about the .adr Virus threat: Manual removal of .adr Virus requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

1. Boot Your PC In Safe Mode to isolate and remove .adr Virus files and objects
2.Find malicious files created by .adr Virus on your PC

Automatically remove .adr Virus by downloading an advanced anti-malware program

1. Remove .adr Virus with SpyHunter Anti-Malware Tool and back up your data
2. Restore files encrypted by .adr Virus
Optional: Using Alternative Anti-Malware Tools

Vencislav Krustev

A network administrator and malware researcher at SensorsTechForum with passion for discovery of new shifts and innovations in cyber security. Strong believer in basic education of every user towards online safety.

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