Backdoor.Fosor
Posted: November 23, 2011
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: | 6/10 |
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Infected PCs: | 1 |
First Seen: | November 23, 2011 |
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OS(es) Affected: | Windows |
Backdoor.Fosor is a harmful backdoor Trojan that opens a back door on the infected PC system and allows an attacker to execute numerous malicious actions. Backdoor.Fosor disable the Windows firewall and logs keystrokes. Backdoor.Fosor can collect your personal and system information and forward it to remote attackers. Backdoor.Fosor can download and install additional malware infections. Backdoor.Fosor can start new services and block security software. Backdoor.Fosor adds certain system and modifies the registry so that it can run automatically each time you start your PC. Uninstall Backdoor.Fosor immediately after detection.
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:bdesfvc.dll
File name: bdesfvc.dllSize: 70.21 KB (70214 bytes)
MD5: f81c44f3ddf9da85e86e5024e98a686f
Detection count: 31
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: November 29, 2011
%Windir%\Ball.exe
File name: %Windir%\Ball.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%Windir%\Temp\svchost.exe
File name: %Windir%\Temp\svchost.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%Windir%\Temp\zk.exe
File name: %Windir%\Temp\zk.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%UserProfile%\Start Menu\Programs\Startup\Ball.exe
File name: %UserProfile%\Start Menu\Programs\Startup\Ball.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
Registry Modifications
HKEY..\..\..\..{Subkeys}HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server\Wds\rdpwd\Tds\tcp\PortNumberHKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server\WinStations\RDP-Tcp\PortNumberHKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[SERVICE NAME]HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server\fDenyTSConnectionsHKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\NetCache\"Enabled" = "0"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\"ShutdownWithoutLogon" = "0"HKEY_USERS\.DEFAULT\Keyboard Layout\Toggle\"Hotkey" = "1"
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