Win32.HLLW.Autoruner2.34720
Added to the Dr.Web virus database:
2018-03-27
Virus description added:
2018-03-27
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Classes\MSProgramGroup\Shell\Open\Command] '' = '<SYSTEM32>\grpconv.exe %1'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'GrpConv' = 'grpconv -o'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'afeys' = '%TEMP%\2w9x.exe'
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\MouseDriver] 'ImagePath' = '%TEMP%\MouseDriver.bat'
- [<HKLM>\SYSTEM\ControlSet001\Services\MouseDriver] 'Start' = '00000002'
Malicious functions:
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
Executes the following:
- '<SYSTEM32>\net.exe' stop "Windows Firewall/Internet Connection Sharing (ICS)"
- '<SYSTEM32>\net.exe' stop "Security Center"
Modifies file system:
Creates the following files:
- %TEMP%\mdinstall.inf
- %TEMP%\nftmgpxl.bat
- %TEMP%\2w9x.exe
- %TEMP%\MouseDriver.bat
Sets the 'hidden' attribute to the following files:
Deletes the following files:
- <Full path to file>
- %TEMP%\mdinstall.inf
Network activity:
Connects to:
- 'w.#####ardiscover.com':888
UDP:
- DNS ASK w.#####ardiscover.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
- ClassName: 'MS_AutodialMonitor' WindowName: ''
Creates and executes the following:
- '%TEMP%\2w9x.exe' -dA5B612F83EF95788679694B3A1E5AFAA178294E4B1D390597C1090E68056177F4E322C31B6CA9CC290E4329D82BCDBF31FDCD73FD77C560A8CB5403CD4ABF587276E44EB838BF01C5C1D7433C73CEEE44374581490216E6E72C0FC9451A567E...
- '%TEMP%\2w9x.exe'
Executes the following:
- '<SYSTEM32>\runonce.exe' -r
- '<SYSTEM32>\rundll32.exe' setupapi,InstallHinfSection DefaultInstall 128 %TEMP%\mdinstall.inf
- '<SYSTEM32>\grpconv.exe' -o
- '<SYSTEM32>\cmd.exe' /c %TEMP%\nftmgpxl.bat
- '<SYSTEM32>\sc.exe' config SharedAccess start= DISABLED
- '<SYSTEM32>\sc.exe' config wscsvc start= DISABLED
- '<SYSTEM32>\net1.exe' stop "Windows Firewall/Internet Connection Sharing (ICS)"
- '<SYSTEM32>\net1.exe' stop "Security Center"
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