Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- <LS_APPDATA>\Start\RCX5.tmp
- <LS_APPDATA>\Start\update_backup.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
- file extensions
Executes the following:
- '%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%\k2d-op5n.cmdline"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4.tmp" "%TEMP%\vbc3.tmp"
- '%TEMP%\update.exe'
- '%TEMP%\svchost.exe'
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\yzu7axv1.cmdline"
Modifies file system:
Creates the following files:
- %TEMP%\whatdafock.txt
- %TEMP%\k2d-op5n.0.vb
- %TEMP%\EKwqVT.resources
- %TEMP%\yzu7axv1.exe
- %TEMP%\UoTO.resources
- %TEMP%\RES4.tmp
- %TEMP%\windowsupdate.ico
- %TEMP%\vbc3.tmp
- %TEMP%\k2d-op5n.cmdline
- %TEMP%\k2d-op5n.out
- %TEMP%\RES2.tmp
- <LS_APPDATA>\Start\update.exe
- %TEMP%\W284Gt32.resources
- %TEMP%\svchost.exe
- %TEMP%\KoRJ.resources
- %TEMP%\update.exe
- %TEMP%\yzu7axv1.out
- %TEMP%\vbc1.tmp
- %TEMP%\yzu7axv1.cmdline
- %TEMP%\MSNPSharp.dll
- %TEMP%\yzu7axv1.0.vb
Deletes the following files:
- %TEMP%\k2d-op5n.out
- %TEMP%\UoTO.resources
- %TEMP%\k2d-op5n.0.vb
- %TEMP%\k2d-op5n.cmdline
- %TEMP%\windowsupdate.ico
- <LS_APPDATA>\Start\update.exe
- %TEMP%\EKwqVT.resources
- <LS_APPDATA>\Start\update_backup.exe
- %TEMP%\yzu7axv1.exe
- %TEMP%\yzu7axv1.cmdline
- %TEMP%\RES2.tmp
- %TEMP%\vbc1.tmp
- %TEMP%\RES4.tmp
- %TEMP%\vbc3.tmp
- %TEMP%\yzu7axv1.out
- %TEMP%\yzu7axv1.0.vb
Network activity:
Connects to:
- '17#.#3.169.14':80
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: ''
