Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avp.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\wireshark.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\bdagent.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\keyscrambler.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ComboFix.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsMpEng.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCui.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpCmdRun.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\zlclient.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mbam.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\hijackthis.exe] 'Debugger' = 'nsjw.exe'
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'Load' = 'C:\{$1284-9213-2940-1289$}\svchost.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Host Process for Windows Services' = 'C:\{$1284-9213-2940-1289$}\svchost.exe -rundll32 /SYSTEM32 "<SYSTEM32>\taskmgr.exe" "%PROGRAM_FILES%\Microsoft\Windows"'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\spybotsd.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avguard.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\egui.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ccuac.exe] 'Debugger' = 'nsjw.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avcenter.exe] 'Debugger' = 'nsjw.exe'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\svchost.exe.url
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks the following features:
- System Restore (SR)
Creates and executes the following:
- 'C:\{$1284-9213-2940-1289$}\svchost.exe'
Executes the following:
- '<SYSTEM32>\wscript.exe' "%ALLUSERSPROFILE%\Application Data\27218346293184.vbs"
Modifies file system :
Creates the following files:
- %ALLUSERSPROFILE%\Application Data\27218346293184.vbs
- %ALLUSERSPROFILE%\Application Data\27218346293184.exe
- C:\{$1284-9213-2940-1289$}\svchost.exe
Sets the 'hidden' attribute to the following files:
- %ALLUSERSPROFILE%\Application Data\27218346293184.exe
- <Full path to virus>
- C:\{$1284-9213-2940-1289$}\svchost.exe
Deletes the following files:
- %ALLUSERSPROFILE%\Application Data\27218346293184.vbs
- C:\{$1284-9213-2940-1289$}\svchost.exe
Network activity:
Connects to:
- 'fu#####d.servebeer.com':3406
UDP:
- DNS ASK fu#####d.servebeer.com
