Home Malware Programs Trojans Trojan.Downloader.Vundo.J

Trojan.Downloader.Vundo.J

Posted: October 8, 2012

Threat Metric

Threat Level: 8/10
Infected PCs: 33
First Seen: October 8, 2012
OS(es) Affected: Windows

TrojanDownloader:Win32/Vundo.J is a Trojan downloader that may download and execute arbitrary files on the affected computer.
TrojanDownloader:Win32/Vundo.J belongs to the Win32/Vundo family, a multiple-component family of programs that distribute 'out of context' pop-up advertisements. Once installed on the infected computer system, TrojanDownloader:Win32/Vundo.J makes system changes by modifying the Windows Registry and dropping potentially malicious files. TrojanDownloader:Win32/Vundo.J invades the vulnerable PC with an icon and version information that differs between samples, which is an executable file with a random name. TrojanDownloader:Win32/Vundo.J starts for the first time when the executable file is opened or run. To install itself on the affected computer, TrojanDownloader:Win32/Vundo.J uses the certain version information, which will show in Windows Explorer in the Tiles view. TrojanDownloader:Win32/Vundo.J may use the names, such as Symantec Shared Component, ESET Smart Security and Borland Remote Debugging Server as a form of social engineering to urge the PC user to open or run the .exe file. TrojanDownloader:Win32/Vundo.J uses the certain icons which have been copied by cybercriminals from legitimate applications.

Aliases

Trj/OCJ.C [Panda]Generic31.ADN [AVG]W32/Cidox.URQ!tr [Fortinet]Trojan.Win32.Cidox.urq [Kaspersky]Trj/OCJ.D [Panda]Generic31.BNWS [AVG]W32/Cidox.ACCN!tr [Fortinet]TR/Kazy.117219.77 [AntiVir]Trojan.Mayachok.18579 [DrWeb]Trojan.Win32.Cidox.accn [Kaspersky]Win32.Trojan [eSafe]Win32:Kryptik-LDO [Trj] [Avast]W32/Downldr2.IZIW [F-Prot]Trojan [K7AntiVirus]RDN/Downloader.a!bq [McAfee]
More aliases (176)

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:



%APPDATA%\773A.exe File name: 773A.exe
Size: 214.52 KB (214528 bytes)
MD5: 1a4e970d540476f50b42dd09cc3d2e56
Detection count: 86
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%
Group: Malware file
Last Updated: October 8, 2012
%WINDIR%\system32\tuitjel.dll File name: tuitjel.dll
Size: 43 KB (43008 bytes)
MD5: e5e25ec02821506208ffd136819659f2
Detection count: 82
File type: Dynamic link library
Mime Type: unknown/dll
Path: %WINDIR%\system32
Group: Malware file
Last Updated: January 29, 2013
%USERPROFILE%\Documents\Iterra\ctivkuf.dll File name: ctivkuf.dll
Size: 42.49 KB (42496 bytes)
MD5: eab0ec6acb884318019e8e0008ff263c
Detection count: 33
File type: Dynamic link library
Mime Type: unknown/dll
Path: %USERPROFILE%\Documents\Iterra
Group: Malware file
Last Updated: January 21, 2013
%WINDIR%\system32\tpnvnmb.dll File name: tpnvnmb.dll
Size: 43 KB (43008 bytes)
MD5: f65838a463202fc9b16526a1c31c8baf
Detection count: 7
File type: Dynamic link library
Mime Type: unknown/dll
Path: %WINDIR%\system32
Group: Malware file
Last Updated: February 22, 2013
%WINDIR%\system32\vaymcyl.dll File name: vaymcyl.dll
Size: 53.76 KB (53760 bytes)
MD5: a7add8058dde29973cb8bb4a34b1c539
Detection count: 5
File type: Dynamic link library
Mime Type: unknown/dll
Path: %WINDIR%\system32
Group: Malware file
Last Updated: February 22, 2013
%WINDIR%\system32\yxsuzlc.dll File name: yxsuzlc.dll
Size: 42.49 KB (42496 bytes)
MD5: 63b34123956a443f636771ede53f98e0
Detection count: 5
File type: Dynamic link library
Mime Type: unknown/dll
Path: %WINDIR%\system32
Group: Malware file
Last Updated: February 11, 2013
Loading...