Win32.HLLW.Autoruner2.17559
Added to the Dr.Web virus database:
2014-10-03
Virus description added:
2014-10-04
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'System' = ''
Creates the following files on removable media:
- <Drive name for removable media>:\AUTORUN.inf
- <Drive name for removable media>:\mae11c.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Registry Editor (RegEdit)
Creates and executes the following:
- '<DRIVERS>\NET.exe'
- '<DRIVERS>\smss.exe'
Executes the following:
- '<SYSTEM32>\reg.exe' add hklm\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v EnableFirewall /t reg_dword /d "0" /f
- '<SYSTEM32>\reg.exe' add hkcu\software\microsoft\windows\currentversion\policies\system /v disableregistrytools /t reg_dword /d "1" /f
Modifies file system :
Creates the following files:
- C:\mae11c.exe
- <SYSTEM32>\dll.txt
- <DRIVERS>\AUTORUN.inf
- <DRIVERS>\NET.exe
- C:\AUTORUN.inf
- <DRIVERS>\ifo.bat
- <DRIVERS>\smss.exe
- <DRIVERS>\Explorer.exe
- <Current directory>\ifo.bat
- <DRIVERS>\svchost.exe
Sets the 'hidden' attribute to the following files:
- C:\AUTORUN.inf
- <Drive name for removable media>:\AUTORUN.inf
- C:\mae11c.exe
- <Drive name for removable media>:\mae11c.exe
Deletes the following files:
- <DRIVERS>\svchost.exe
- <DRIVERS>\AUTORUN.inf
- %TEMP%\~DF33F4.tmp
- <DRIVERS>\Explorer.exe
- <SYSTEM32>\Restore\rstrui.exe
- <DRIVERS>\smss.exe
- %TEMP%\~DF90A1.tmp
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
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