![avast rundll32 exe virus avast rundll32 exe virus](https://www.bleepstatic.com/images/news/ransomware/locky/dll-installer/rundll32.png)
- #AVAST RUNDLL32 EXE VIRUS FULL#
- #AVAST RUNDLL32 EXE VIRUS PASSWORD#
- #AVAST RUNDLL32 EXE VIRUS WINDOWS#
Since the loader is expecting rundll32.exe to trigger itself, this seems to give the rundll32.exe Administrator rights, as well as the is a normal system file that is the essential part of Windows, which is responsible for running certain aspects of applications like Internet Explorer.
#AVAST RUNDLL32 EXE VIRUS PASSWORD#
It will brute force the administrator login using hardcoded password list and proceed with infection after the successful login is achieved. The payload contains the worm propagation routine and infect other system using exposed Remote Desktop Protocol (RDP) Services.
![avast rundll32 exe virus avast rundll32 exe virus](https://www.geniustechie.com/wp-content/uploads/2019/10/Rundll32-exe-3.png)
It decrypts and loads the encrypted payload saved at HKLM\System\Wpa\md registry value.
#AVAST RUNDLL32 EXE VIRUS WINDOWS#
Due to the nature of the Windows DLL loading mechanism, the clb.dll file that was dropped by the malware in the Windows directory gets loaded instead of the one in the %systemdir% directory.Īs it is the malicious DLL that gets loaded, the regedit command does not show any graphic user interface (GUI) as it normally does. This happens because regedit normally loads a normal Windows DLL component from the %systemdir% folder named clb.dll. The clb.dll or the loader gets triggered when the regedit command was executed. It then drops a DLL component in the Windows directory named clb.dll (which is the loader) and executes regedit in the Windows run command, then terminates. This encrypted data is actually the payload of the malware.
![avast rundll32 exe virus avast rundll32 exe virus](https://www.hitechwork.com/wp-content/uploads/2021/06/What-Is-Rundll32.Exe_.jpg)
It then saves a copy of the embedded encrypted data to the registry value, HKLM\System\Wpa\md.
#AVAST RUNDLL32 EXE VIRUS FULL#
Upon execution, it sets the data of the registry value HKLM\SYSTEM\WPA\ie to its own full path, then deletes the registry key, HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU. Worm:W32/Morto.A can be viewed as having three components: the dropper, the loader, and the payload.