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Backdoor.Matsnu

Posted: February 29, 2012

Threat Metric

Threat Level: 6/10
Infected PCs: 93
First Seen: February 29, 2012
OS(es) Affected: Windows

Backdoor.Matsnu is a hazardous Trojan that opens a back door on the infected computer system. Backdoor.Matsnu pretends to be the security application named Trusteer Rapport. Backdoor.Matsnu may spread to compromised PCs through different spam emails. Example of attachment file names are 'IRS-Penalty-Income-Tax-Warning-Notification-Feb2012.exe', 'DHLInternationalShipmentNotification22-Feb-2012.exe' and 'ReservationDetails-Booking_Com-16Feb2012.exe'. Once executed, Backdoor.Matsnu creates malicious files as well as copies of itself to certain locations. Backdoor.Matsnu modifies the Windows Registry by deleting or creating registry keys. Then Backdoor.Matsnu opens a back door on the affected machine and connects to a particular website. Backdoor.Matsnu can update itself, download and execute files, create a new system restore point and shut down the computer.

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:



USPS_Shipment-Info.exe File name: USPS_Shipment-Info.exe
Size: 130.56 KB (130560 bytes)
MD5: 17ca8ee2a9301e5f9fa9fa71f45fd170
Detection count: 73
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: March 15, 2012
PSE Paperless Bill Notification.zip File name: PSE Paperless Bill Notification.zip
Size: 104.04 KB (104045 bytes)
MD5: c792de7e33279360e0daab0b84827dc1
Detection count: 70
Mime Type: unknown/zip
Group: Malware file
Last Updated: September 1, 2020
march2012.exe File name: march2012.exe
Size: 129.53 KB (129536 bytes)
MD5: 2e00ecb4e72b9a643ce00c15040ff7f6
Detection count: 68
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: March 15, 2012
%System%\RPService.exe File name: %System%\RPService.exe
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
%ProgramFiles%\Trusteer\Rapport\bin\RapportService.exe File name: %ProgramFiles%\Trusteer\Rapport\bin\RapportService.exe
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
%ProgramFiles%\Trusteer Rapport\Start Rapport.lnk File name: %ProgramFiles%\Trusteer Rapport\Start Rapport.lnk
File type: Shortcut
Mime Type: unknown/lnk
Group: Malware file
%ProgramFiles%\Trusteer Rapport\Stop Rapport.lnk File name: %ProgramFiles%\Trusteer Rapport\Stop Rapport.lnk
File type: Shortcut
Mime Type: unknown/lnk
Group: Malware file
%ProgramFiles%\Trusteer Rapport\Rapport Console.lnk File name: %ProgramFiles%\Trusteer Rapport\Rapport Console.lnk
File type: Shortcut
Mime Type: unknown/lnk
Group: Malware file

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\{Value}HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RapportSetup.exe\"Debugger" = "RPXService.exe"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RapportSetup-Full.exe\"Debugger" = "RPXService.exe"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RapportService.exe\"Debugger" = "RPService.exe"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RapportMgmtService.exe\"Debugger" = "RPService.exe"HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.eze\"" = "MyEze.1"HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MyEze.1\shell\open\command\"" = "%System%\RPService.exe %0 %1 %2"

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