W32.Widoom
Posted: March 28, 2012
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: | 93 |
First Seen: | March 28, 2012 |
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OS(es) Affected: | Windows |
W32.Widoom is a malignant worm that tries to circulate through removable drives and open a back door on the infected PC by connecting to the particular remote location on TCP port 80. Once executed, W32.Widoom creates copies of itself by dropping a certain file. W32.Widoom also modifies the Windows Registry so that it can execute every time you boot up Windows. W32.Widoom creates the specific mutex called 'tbYfOPSWsbgXvrx' so that only one instance of the infection runs on the PC. W32.Widoom connects to an IRC server and waits for instructional commands that enable it to execute malicious actions that include updating itself, downloading and executing remote files and sending client status (computer name, locale info, Windows version). You should eliminate W32.Widoom immediately after detection by using a genuine security tool.
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:%DriveLetter%\UxxxSBSERVICEx\FA8AF9NCAS-JK6NK3BHHBF-DFSDS89FY-F27E\Desktop.ini
File name: %DriveLetter%\UxxxSBSERVICEx\FA8AF9NCAS-JK6NK3BHHBF-DFSDS89FY-F27E\Desktop.iniMime Type: unknown/ini
Group: Malware file
%DriveLetter%\UxxxSBSERVICEx\FA8AF9NCAS-JK6NK3BHHBF-DFSDS89FY-F27E\autorunme.exe
File name: %DriveLetter%\UxxxSBSERVICEx\FA8AF9NCAS-JK6NK3BHHBF-DFSDS89FY-F27E\autorunme.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%Windir%\System.exe
File name: %Windir%\System.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%DriveLetter%\AutORUN.inf
File name: %DriveLetter%\AutORUN.infMime Type: unknown/inf
Group: Malware file
Registry Modifications
HKEY..\..\..\..{Subkeys}HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"MSN Messanger" = "%Windir%\System.exe"
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