Backdoor.Mudsy
Posted: April 19, 2013
Threat Metric
The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
Threat Level: | 2/10 |
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Infected PCs: | 92 |
First Seen: | April 22, 2013 |
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OS(es) Affected: | Windows |
Backdoor.Mudsy is a backdoor Trojan that opens a back door on the corrupted PC. Backdoor.Mudsy is usually downloaded by a specially crafted RTF document which exploits the Microsoft Windows Common Controls ActiveX Control Remote Code Execution Vulnerability (CVE-2012-0158). When executed, Backdoor.Mudsy creates the potentially malicious files on the infected computer system. The document.doc file added by Backdoor.Mudsy is not malicious. Backdoor.Mudsy creates the registry entries so that it can run automatically every time Windows is started. Backdoor.Mudsy connects to port 8081 on the specific IP address. Backdoor.Mudsy may execute malicious actions such as download and upload files, execute commands and delete registry 'Run' keys.
Technical Details
File System Modifications
Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.
The following files were created in the system:%Temp%\document.doc
File name: %Temp%\document.docMime Type: unknown/doc
Group: Malware file
%Temp%\vbScript.bat
File name: %Temp%\vbScript.batFile type: Batch file
Mime Type: unknown/bat
Group: Malware file
%Temp%\update.exe
File name: %Temp%\update.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%System%\msdap.dll
File name: %System%\msdap.dllFile type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Registry Modifications
HKEY..\..\{Value}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\"Display Card Driver" = "rundll32.exe %System%\msdap.dll,Display"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"Display Card Driver" = "rundll32.exe %System%\msdap.dll,Display"
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