Win32.HLLW.Autoruner1.61511
Added to the Dr.Web virus database:
2013-11-21
Virus description added:
2013-11-22
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'k364' = 'g:\svchostoo.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'k365' = 'h:\svchostoo.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'k366' = 'C:\svchostoo.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '3k60' = '<SYSTEM32>\svchostoo.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'k362' = '<Drive name for removable media>:\svchostoo.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'k363' = 'f:\svchostoo.exe'
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\QNCGLRUW] 'ImagePath' = '<DRIVERS>\QNCGLRUW.sys'
Creates the following files on removable media:
- <Drive name for removable media>:\svchostoo.exe
- <Drive name for removable media>:\AutoRun.inf
Malicious functions:
Hooks the following functions in System Service Descriptor Table (SSDT):
- NtWriteVirtualMemory, handler: QNCGLRUW.sys
- NtReadVirtualMemory, handler: QNCGLRUW.sys
- NtOpenProcess, handler: QNCGLRUW.sys
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- %HOMEPATH%\Desktop\Mozilla Firefox.lnk
- %WINDIR%\Config\17.lnk
- <SYSTEM32>\svchostoo.exe
- <DRIVERS>\QNCGLRUW.sys
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\duba[1]
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\2345[1]
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\AutoRun.inf
Deletes the following files:
Network activity:
Connects to:
- 'www.23##.com':80
- 'www.du##.com':80
- 'localhost':1035
TCP:
HTTP GET requests:
- www.23##.com/?k6#######
- www.du##.com/?un#########
UDP:
- DNS ASK www.23##.com
- DNS ASK www.du##.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
- ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
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