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ニュース

Trojan.DownLoader33.2822

Added to the Dr.Web virus database: 2020-02-16

Virus description added:

Technical Information

Malicious functions
Executes the following
  • '%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram "%TEMP%\dll.exe" "dll.exe" ENABLE
Modifies file system
Creates the following files
  • %TEMP%\apk_tools.exe
  • %TEMP%\tools\zipalign.exe
  • %TEMP%\tools\testkey.x509.pem
  • %TEMP%\tools\testkey.pk8
  • %TEMP%\tools\smali.jar
  • %TEMP%\tools\signapk.jar
  • %TEMP%\tools\roptipng.exe
  • %TEMP%\tools\baksmali.jar
  • %TEMP%\tools\apktool2.0.0b9.jar
  • %TEMP%\logs\021620.log
  • %TEMP%\tools\apktool1.5.2.jar
  • %TEMP%\tools\adbwinapi.dll
  • %TEMP%\tools\adb.exe
  • %TEMP%\tools\aapt.exe
  • %TEMP%\tools\7za.exe
  • %TEMP%\server.exe
  • %TEMP%\20110911\tools.zip
  • %TEMP%\20110911\list.txt
  • %TEMP%\20110911\7za.exe
  • %TEMP%\tools\adbwinusbapi.dll
  • %TEMP%\hsperfdata_user\2104
Deletes the following files
  • %TEMP%\20110911\7za.exe
  • %TEMP%\20110911\list.txt
  • %TEMP%\20110911\tools.zip
Network activity
TCP
  • 'pa###bin.com':443
UDP
  • DNS ASK pa###bin.com
Miscellaneous
Searches for the following windows
  • ClassName: 'AutoHotkey' WindowName: '%TEMP%\APK_Tools.exe'
  • ClassName: '#32771' WindowName: ''
Creates and executes the following
  • '%TEMP%\apk_tools.exe'
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip AdbWinUsbApi.dll
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip signapk.jar
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip testkey.pk8
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip roptipng.exe
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip testkey.x509.pem
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip apktool2.0.0b9.jar
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip apktool1.5.2.jar
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip baksmali.jar
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip zipalign.exe
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip AdbWinApi.dll
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip Frameworks
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip aapt.exe
  • '%TEMP%\server.exe'
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip 7za.exe
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip smali.jar
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip adb.exe
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip baksmali.jar' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip signapk.jar' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip testkey.x509.pem' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip Frameworks' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip testkey.pk8' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /C java -version' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip zipalign.exe' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip smali.jar' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip apktool2.0.0b9.jar' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip apktool1.5.2.jar' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip AdbWinUsbApi.dll' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip AdbWinApi.dll' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip adb.exe' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip aapt.exe' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip 7za.exe' (with hidden window)
  • '%TEMP%\20110911\7za.exe' x -otools %TEMP%\20110911\tools.zip roptipng.exe' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /C "%TEMP%\tools\adb.exe" version' (with hidden window)
  • '%WINDIR%\syswow64\netsh.exe' firewall add allowedprogram "%TEMP%\dll.exe" "dll.exe" ENABLE' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /C java -version
  • '%WINDIR%\syswow64\cmd.exe' /C "%TEMP%\tools\adb.exe" version
  • '%TEMP%\tools\adb.exe' version

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

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  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.

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