Win32.HLLW.Autoruner1.16518
Added to the Dr.Web virus database:
2012-05-27
Virus description added:
2012-06-16
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'svchost' = '%WINDIR%\svchost.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'wuaclt.exe' = '%WINDIR%\javaupdate\expa.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Nueva Carpeta.exe
- <Drive name for removable media>:\explore.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
Creates and executes the following:
Executes the following:
- <SYSTEM32>\attrib.exe +S +H +R "G:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "F:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "H:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "J:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "I:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "R:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "Q:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "S:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "E:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "<Drive name for removable media>:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "Q:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "P:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "R:\autorun.inf"
- <SYSTEM32>\ping.exe 127.0.0.1 -n 60
- <SYSTEM32>\attrib.exe +S +H +R "S:\autorun.inf
- <SYSTEM32>\attrib.exe +S +H +R "L:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "K:\autorun.inf
- <SYSTEM32>\attrib.exe +S +H +R "M:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "O:\autorun.inf"
- <SYSTEM32>\attrib.exe +S +H +R "N:\autorun.inf"
- <SYSTEM32>\taskkill.exe /f /im explore.exe
- <SYSTEM32>\reg.exe ADD HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL /v CheckedValue /t REG_DWORD /d "2" /f
- <SYSTEM32>\attrib.exe +S +H +R "<Drive name for removable media>:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "F:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "E:\explore.exe"
- <SYSTEM32>\ping.exe 127.0.0.1 -n 4
- %WINDIR%\explorer.exe <Current directory>
- <SYSTEM32>\ping.exe 127.0.0.1 -n 2
- <SYSTEM32>\reg.exe ADD HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\NOHIDDEN /v CheckedValue /t REG_DWORD /d "2" /f
- <SYSTEM32>\reg.exe ADD HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v wuaclt.exe /t REG_SZ /d "%WINDIR%\javaupdate\expa.exe" /f
- <SYSTEM32>\attrib.exe +S +H +R "M:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "L:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "N:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "P:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "O:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "H:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "G:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "I:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "K:\explore.exe"
- <SYSTEM32>\attrib.exe +S +H +R "J:\explore.exe"
Searches for windows to
detect analytical utilities:
- ClassName: 'PROCMON_WINDOW_CLASS' WindowName: ''
- ClassName: 'RegMonClass' WindowName: ''
- ClassName: 'FileMonClass' WindowName: ''
Modifies file system :
Creates the following files:
- %WINDIR%\svchost.exe
- %WINDIR%\javaupdate\update_java.exe
- %WINDIR%\temvir - CRNJEUFU.txt
- %WINDIR%\csrss.exe
- %WINDIR%\javaupdate\update.dll
- <LS_APPDATA>\expa.exe
- <LS_APPDATA>\svchost.exe
- %WINDIR%\javaupdate\expa.exe
- %TEMP%\a51921.bat
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\explore.exe
- %TEMP%\a51921.bat
Network activity:
Connects to:
UDP:
- DNS ASK mo####n.comxa.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'edit' WindowName: ''
- ClassName: '' WindowName: 'TeamViewer - Registro de sucesos de la transferencia de archivos'
- ClassName: '' WindowName: 'Sesion esponsorizada'
- ClassName: '' WindowName: 'TeamViewer'
- ClassName: '' WindowName: ''
- ClassName: 'ThunderRT6FormDC' WindowName: 'Shareware Cheater v 3.0'
- ClassName: 'ThunderRT6FormDC' WindowName: ''
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