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Win32.HLLW.Autoruner2.18900
Added to the Dr.Web virus database:
2015-01-08
Virus description added:
2015-01-08
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'c7192e982641757f14f66356bb4cf303' = '"%HOMEPATH%\Trojan.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'c7192e982641757f14f66356bb4cf303' = '"%HOMEPATH%\Trojan.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Update.exe' = '<Full path to virus>'
Creates the following files on removable media:
<Drive name for removable media>:\autorun.inf.lnk
<Drive name for removable media>:\<Virus name>.exe.lnk
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\BlackWorm.exe
<Drive name for removable media>:\<Virus name>.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\Trojan.exe' = '%HOMEPATH%\Trojan.exe:*:Enabled:Trojan.exe'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
[<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:
Command Prompt (CMD)
Windows Task Manager (Taskmgr)
Registry Editor (RegEdit)
Creates and executes the following:
'%HOMEPATH%\Trojan.exe'
'%TEMP%\<Virus name>.exe'
Executes the following:
'<SYSTEM32>\wbem\wmiadap.exe' /R /T
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\Trojan.exe" "Trojan.exe" ENABLE
'<SYSTEM32>\netsh.exe' firewall set opmode disable
Modifies file system :
Creates the following files:
%HOMEPATH%\My Documents\Downloads\Uninstall Information.exe
%HOMEPATH%\My Documents\Downloads\Windows Media Player.exe
%HOMEPATH%\My Documents\Downloads\Windows NT.exe
%HOMEPATH%\My Documents\Downloads\Reference Assemblies.exe
%HOMEPATH%\My Documents\Downloads\NetMeeting.exe
%HOMEPATH%\My Documents\Downloads\Online Services.exe
%HOMEPATH%\My Documents\Downloads\Outlook Express.exe
<LS_APPDATA>\IsolatedStorage\h2dxvv00.3tl\aujjry3w.etd\StrongName.a5nwxrz3wp2zfwyhn5hvit0zqnhv3dr4\info.dat
<LS_APPDATA>\IsolatedStorage\h2dxvv00.3tl\aujjry3w.etd\StrongName.a5nwxrz3wp2zfwyhn5hvit0zqnhv3dr4\AssemFiles\DAF6EC3B\Usages.bin
<LS_APPDATA>\IsolatedStorage\h2dxvv00.3tl\aujjry3w.etd\StrongName.a5nwxrz3wp2zfwyhn5hvit0zqnhv3dr4\identity.dat
%HOMEPATH%\My Documents\Downloads\WindowsUpdate.exe
%HOMEPATH%\My Documents\Downloads\xerox.exe
<Current directory>\workgroup
%HOMEPATH%\My Documents\Downloads\MSN Gaming Zone.exe
%HOMEPATH%\My Documents\Downloads\ComPlus Applications.exe
%HOMEPATH%\My Documents\Downloads\FireFox.exe
%HOMEPATH%\My Documents\Downloads\Internet Explorer.exe
%HOMEPATH%\My Documents\Downloads\Common Files.exe
%TEMP%\<Virus name>.exe
C:\<Virus name>.exe
C:\autorun.inf
%HOMEPATH%\My Documents\Downloads\Movie Maker.exe
%HOMEPATH%\My Documents\Downloads\MSBuild.exe
%HOMEPATH%\My Documents\Downloads\MSN.exe
%HOMEPATH%\My Documents\Downloads\Microsoft.NET.exe
%HOMEPATH%\Trojan.exe
%HOMEPATH%\My Documents\Downloads\Messenger.exe
%HOMEPATH%\My Documents\Downloads\microsoft frontpage.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\<Virus name>.exe
<Current directory>\workgroup
<Drive name for removable media>:\BlackWorm.exe
C:\autorun.inf
C:\<Virus name>.exe
Deletes the following files:
<Drive name for removable media>:\<Virus name>.exe.lnk
<Drive name for removable media>:\autorun.inf.lnk
Miscellaneous:
Searches for the following windows:
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: 'Indicator' WindowName: ''
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