“C:\Users\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup” folder. The malware disables Task manager, and it undermines all the modules of Windows Defender.įurther digging into the file revealed that malware sent an HTTP request to download the bat file and. If the user clicks on the Next button, the control panel opens for uninstalling the software, and in the background, the malware checks whether it is uninstalled. If any antivirus processes are running on the system, the below prompt appears, asking the user to intervene and uninstall the product. It has a list of AVs, as shown below, and it checks if any of the antivirus product is installed in the system. The malware also excludes the below drives. It adds the below paths in exclusion for the Windows Defender modules through the PowerShell cmdlet Set-MpPreference to hide all the malware components from Windows Defender.Ĭmd.exe /c PowerShell -Command Add-MpPreference -ExclusionPath “C:\Users\XXX\Contacts”Ĭmd.exe /c PowerShell -Command Add-MpPreference -ExclusionPath “C:\Users\XXX\Links” etcĪbove are excluded by executing cmd.exe.
It launches the Allakore Rat ùsing PowerShell cmdlet Set-preference, making TCP requests as shown above image. It is immense (~ 12MB) as it has most of the code to impair the defences. The ‘mdnsFULLHD.exe’ file is PE32 executable for MS Windows, and it is Delphi compiled. Malware also disables real-time protection by setting values by 1.ĪllaKore Rat is an open-source simple Remote Access Tool written in Delphi and has a very high resemblance with code found on GitHub.īabuk Downloader launches the Allakore Rat, and it makes TCP requests, as shown below. It also disables windows defender by setting the value of DisableAntiSpyware by 1. reg file disables user account control by setting the value of EnableLUA by 0. All the dropped files in the startup folder are executed through PowerShell and their activity in the background.Īnydesk. Clean Anydesk application is dropped at the desktop, and it gets installed. Reg is fallen in the Startup folder without user interaction. The above image shows an Allakore Rat client named bthudtaskt.exe, a Babuk downloader called mdnsFULLHD.exe, and one registry file named Anydesk. When a user clicks on the downloaded archive, which pretends to be an Anydesk software application, other files in the bundle get dropped silently.
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