Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /e'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /R'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /J'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /a'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /Y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /H'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /O'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /F'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /G'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /u'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /c'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /i'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /m'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /v'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /l'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /s'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /n'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /K'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /B'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /W'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /t'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /P'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /d'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'louyien' = '%HOMEPATH%\louyien.exe /X'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\svchost.exe
Creates the following files on removable media:
- <Drive name for removable media>:\RCX8.tmp
- <Drive name for removable media>:\Bloc-notes.exe
- <Drive name for removable media>:\RCX6.tmp
- <Drive name for removable media>:\RCX7.tmp
- <Drive name for removable media>:\RCXE.tmp
- <Drive name for removable media>:\RCX11.tmp
- <Drive name for removable media>:\louyien_backup.exe
- <Drive name for removable media>:\RCXB.tmp
- <Drive name for removable media>:\Passwords.exe
- <Drive name for removable media>:\Secret.exe
- <Drive name for removable media>:\Sexy.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\louyien.exe
- <Drive name for removable media>:\RCX4.tmp
- <Drive name for removable media>:\RCX5.tmp
- <Drive name for removable media>:\RCX3.tmp
- <Drive name for removable media>:\Porn.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- '%HOMEPATH%\louyien.exe'
- '%TEMP%\svchost.exe'
- '%TEMP%\Sexy.exe'
Executes the following:
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESD.tmp" "%TEMP%\vbcC.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\msgw78ym.cmdline"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES10.tmp" "%TEMP%\vbcF.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\8siurlwf.cmdline"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\vbc1.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\svamukac.cmdline"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESA.tmp" "%TEMP%\vbc9.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\dxf0rjgs.cmdline"
Modifies file system :
Creates the following files:
- %TEMP%\msgw78ym.0.vb
- %TEMP%\QZ.resources
- %TEMP%\msgw78ym.out
- %TEMP%\msgw78ym.cmdline
- %TEMP%\RESA.tmp
- %TEMP%\vbc9.tmp
- %TEMP%\UCXq.resources
- %TEMP%\windowsupdate.ico
- %TEMP%\vbcC.tmp
- %TEMP%\8siurlwf.out
- %TEMP%\8siurlwf.cmdline
- %TEMP%\RES10.tmp
- %TEMP%\vbcF.tmp
- %TEMP%\fS.resources
- %TEMP%\RESD.tmp
- %TEMP%\8siurlwf.0.vb
- %TEMP%\YudWsK.resources
- %TEMP%\dxf0rjgs.out
- %TEMP%\MSNPSharp.dll
- %TEMP%\4e66L.resources
- %TEMP%\svamukac.cmdline
- %TEMP%\svamukac.0.vb
- %TEMP%\svchost.exe
- %TEMP%\nCXn.resources
- %HOMEPATH%\louyien.exe
- %TEMP%\Sexy.exe
- %TEMP%\svamukac.out
- %TEMP%\whatdafock.txt
- %TEMP%\LrnQO.resources
- %TEMP%\dxf0rjgs.cmdline
- %TEMP%\dxf0rjgs.0.vb
- %TEMP%\RES2.tmp
- %TEMP%\vbc1.tmp
- %TEMP%\JcdWE.resources
- %TEMP%\svamukac.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\louyien.exe
- <Drive name for removable media>:\autorun.inf
- %HOMEPATH%\louyien.exe
Deletes the following files:
- %TEMP%\msgw78ym.out
- %TEMP%\msgw78ym.0.vb
- %TEMP%\UCXq.resources
- %TEMP%\msgw78ym.cmdline
- <Drive name for removable media>:\louyien.exe
- %TEMP%\windowsupdate.ico
- %TEMP%\vbcC.tmp
- %TEMP%\RESD.tmp
- %TEMP%\8siurlwf.out
- %TEMP%\8siurlwf.0.vb
- %TEMP%\YudWsK.resources
- %TEMP%\fS.resources
- %TEMP%\RES10.tmp
- %TEMP%\QZ.resources
- %TEMP%\8siurlwf.cmdline
- %TEMP%\vbcF.tmp
- <Drive name for removable media>:\louyien_backup.exe
- %TEMP%\svamukac.exe
- %TEMP%\svamukac.cmdline
- <Drive name for removable media>:\Porn.exe
- <Drive name for removable media>:\Sexy.exe
- %TEMP%\vbc1.tmp
- %TEMP%\RES2.tmp
- %TEMP%\svamukac.out
- %TEMP%\svamukac.0.vb
- %TEMP%\dxf0rjgs.cmdline
- %TEMP%\dxf0rjgs.out
- %TEMP%\LrnQO.resources
- %TEMP%\JcdWE.resources
- %TEMP%\RESA.tmp
- <Drive name for removable media>:\Passwords.exe
- %TEMP%\dxf0rjgs.0.vb
- %TEMP%\vbc9.tmp
Network activity:
Connects to:
- 'ns#.###nsearcher.net':8000
- '17#.#3.169.14':80
UDP:
- DNS ASK ns#.###nsearcher.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'