What is Ahihi ransomware? And how does it execute its attack?
Ahihi Ransomware is a file-encrypting virus created based on the open-source platform known as HIddenTear. It was discovered at the beginning of January 2019 and is mostly focused on targeting English-speaking users although it does not necessarily mean that it can’t infect other users as well.
Once its malicious payload is executed, it will connect the system to a remote Command and Control Server where it downloads its other components. These components are then placed into system folders and are used to execute the data harvesting module. This module is used to collect data from the system and use them for the second module called stealth protection. This second module is used to bypass security measures in the system. After that, it alters some entries in the Windows Registry allowing it to start its attack automatically in every system boot which will make it very difficult to remove. It then scans the entire computer in search for files with 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 .SEON .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
After finding its targeted files, it encrypts them using the AES encryption algorithm. Ahihi ransomware does not appear to add an extension to its encrypted files, making it hard to identify which files are encrypted and which ones are not. It also opens a text file named “README.txt” stating:
“’Your files have been encrypted. If you want to get your files back, please visit http://ripyon[.]me/decrypt and provide us the following information
Your computer name: [user-assigned device name]
Your username: [currently logged in account name]
Your token: [random characters]
CAUTION: DO NOT run this app again or your files will be encrypted permanently”
How is the malicious payload of Ahihi ransomware disseminated online?
Ahihi ransomware may use malicious spam email campaigns in disseminating its malicious payload along with social engineering tactics and a large number of sent messages. These malware-laden emails are often designed to look like they were sent by legitimate companies or individuals so you better double-check any suspicious emails as they might contain the malicious payload of Ahihi ransomware.
Eliminate Ahihi ransomware from your computer using the removal guide provided below as well as the advanced removal steps that follow.
Step_1: First, tap the Ctrl + Shift + Esc keys on your keyboard to open the Task Manager.
Step_2: Under the Task Manager, go to the Processes tab and look for a process named “BangLuongThang02.exe” as well as any suspicious-looking process that takes up most of your CPU’s resources and is most likely related to Ahihi ransomware.
Step_3: After that, close the Task Manager.
Step_4: Tap Win + R, type in appwiz.cpl and click OK or tap Enter to open Programs and Features under Control Panel.
Step_5: Under the list of installed programs, look for Ahihi ransomware or anything similar and then uninstall it.
Step_6: Next, close the Control Panel and tap Win + E keys to launch File Explorer.
Step_7: Navigate to the following locations below and look for Ahihi ransomware’s malicious components such as BangLuongThang02.exe, README.txt , [random].exe, and other suspicious files, then delete all of them.
- %TEMP%
- %WINDIR%\System32\Tasks
- %APPDATA%\Microsoft\Windows\Templates\
- %USERPROFILE%\Downloads
- %USERPROFILE%\Desktop
Step_8: Close the File Explorer.
Before you proceed to the next steps below, make sure that you are tech-savvy enough to the point where you know exactly how to use and navigate your computer’s Registry. Keep in mind that any changes you make will highly impact your computer. To save you trouble and time, you can just use Restoro, this system tool is proven to be safe and excellent enough that hackers won’t be able to hack into it. But if you can manage Windows Registry well, then by all means go on to the next steps.
Step_9: Tap Win + R to open Run and then type in Regedit in the field and tap enter to pull up Windows Registry.
Step_10: Navigate to the following path:
- HKEY_CURRENT_USER\Control Panel\Desktop\
- HKEY_USERS\.DEFAULT\Control Panel\Desktop\
- 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
Step_11: Delete the registry keys and sub-keys created by Ahihi ransomware.
Step_12: Close the Registry Editor and empty the Recycle Bin.
Try to recover your encrypted files using the Shadow Volume copies
Restoring your encrypted files using Windows Previous Versions feature will only be effective if Ahihi ransomware hasn’t deleted the shadow copies of your files. But still, this is one of the best and free methods there is, so it’s definitely worth a shot.
To restore the encrypted file, right-click on it and select Properties, a new window will pop up, then proceed to Previous Versions. It will load the file’s previous version before it was modified. After it loads, select any of the previous versions displayed on the list like the one in the illustration below. And then click the Restore button.
Congratulations, you have just removed Ahihi Ransomware in Windows 10 all by yourself. If you would like to read more helpful articles and tips about various software and hardware visit fixmypcfree.com daily.
Now that’s how you remove Ahihi Ransomware in Windows 10 on a computer. On the other hand, if your computer is going through some system-related issues that have to get fixed, there is a one-click solution known as Restoro you could check out to resolve them.
This program is a useful tool that could repair corrupted registries and optimize your PC’s overall performance. Aside from that, it also cleans out your computer for any junk or corrupted files that help you eliminate any unwanted files from your system. This is basically a solution that’s within your grasp with just a click. It’s easy to use as it is user-friendly. For a complete set of instructions in downloading and using it, refer to the steps below
Perform a full system scan using Restoro. To do so, follow the instructions below.
