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Trojan.MulDrop8.58300
Added to the Dr.Web virus database:
2018-11-13
Virus description added:
2018-11-13
Technical Information
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 wuauserv
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="OpenVPN1.0" dir=in action=block program="%ProgramFiles%\AhnLab\V3Lite30\MUpdate2\MUpdate2.exe"
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="OpenVPN1.0" dir=out action=block program="%ProgramFiles%\AhnLab\V3Lite30\MUpdate2\MUpdate2.exe"
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="OpenVPN2.0" dir=in action=block program="%ProgramFiles%\ESTsoft\ALYac\AYUpdSrv.aye"
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="OpenVPN2.0" dir=out action=block program="%ProgramFiles%\ESTsoft\ALYac\AYUpdSrv.aye"
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Torrentservice" dir=in action=block program="%ProgramFiles%\Naver\NaverVaccine\NvcAgent.npc"
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Torrentservice" dir=out action=block program="%ProgramFiles%\Naver\NaverVaccine\NvcAgent.npc"
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Msn Messenger" dir=in action=block program="%ProgramFiles%\AVAST Software\Avast\setup\instup.exe"
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Msn Messenger" dir=out action=block program="%ProgramFiles%\AVAST Software\Avast\setup\instup.exe"
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Skype updater" dir=in action=block program="%ProgramFiles%\AhnLab\Safe Transaction\MUpdate2\MUpdate2.exe"
'<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Skype updater" dir=out action=block program="%ProgramFiles%\AhnLab\Safe Transaction\MUpdate2\MUpdate2.exe"
Modifies file system:
Creates the following files:
%TEMP%\Installer.msi
%WINDIR%\Installer\MSI5.tmp
C:\Config.Msi\298ce.rbs
%WINDIR%\Installer\MSI3.tmp
%APPDATA%\Windows Defender\is-U16L2.tmp
%APPDATA%\Windows Defender\is-AQ4G9.tmp
%APPDATA%\Windows Defender\is-FQK8I.tmp
%APPDATA%\Windows Defender\is-PLU5M.tmp
%APPDATA%\Windows Defender\is-59PGB.tmp
%APPDATA%\Windows Defender\is-2FS1H.tmp
%APPDATA%\Windows Defender\is-7FQBQ.tmp
%APPDATA%\Windows Defender\is-QRGA4.tmp
%APPDATA%\Windows Defender\is-HE32K.tmp
%APPDATA%\Windows Defender\is-MBQ10.tmp
%APPDATA%\Windows Defender\is-DJQEN.tmp
%TEMP%\is-K9DOT.tmp\Installer.tmp
%TEMP%\MW-01aa3a83-490b-48ae-a235-17a1f38b63cc\files\Installer.exe
%TEMP%\MW-01aa3a83-490b-48ae-a235-17a1f38b63cc\files.cab
%TEMP%\MW-01aa3a83-490b-48ae-a235-17a1f38b63cc\msiwrapper.ini
%WINDIR%\Installer\MSI2.tmp
%WINDIR%\Installer\298cd.ipi
%WINDIR%\Installer\298cb.msi
%TEMP%\start.exe
%TEMP%\Install.cmd
%WINDIR%\Installer\298cf.msi
%WINDIR%\Installer\MSI7.tmp
Deletes the following files:
%TEMP%\is-K9DOT.tmp\Installer.tmp
%WINDIR%\Installer\MSI2.tmp
%WINDIR%\Installer\MSI5.tmp
%WINDIR%\Installer\MSI3.tmp
C:\Config.Msi\298ce.rbs
%TEMP%\MW-01aa3a83-490b-48ae-a235-17a1f38b63cc\files\Installer.exe
%TEMP%\MW-01aa3a83-490b-48ae-a235-17a1f38b63cc\msiwrapper.ini
%TEMP%\MW-01aa3a83-490b-48ae-a235-17a1f38b63cc\files.cab
%WINDIR%\Installer\MSI7.tmp
%WINDIR%\Installer\298cb.msi
%WINDIR%\Installer\298cd.ipi
%TEMP%\Installer.msi
%TEMP%\Install.cmd
Moves the following files:
from %APPDATA%\Windows Defender\is-DJQEN.tmp to %APPDATA%\Windows Defender\config.json
from %APPDATA%\Windows Defender\is-MBQ10.tmp to %APPDATA%\Windows Defender\5WEf9yT5sWfFi1Kl9X400Fn6coNx9Q.7z
from %APPDATA%\Windows Defender\is-HE32K.tmp to %APPDATA%\Windows Defender\7z.dll
from %APPDATA%\Windows Defender\is-QRGA4.tmp to %APPDATA%\Windows Defender\7z.exe
from %APPDATA%\Windows Defender\is-7FQBQ.tmp to %APPDATA%\Windows Defender\7z.sfx
from %APPDATA%\Windows Defender\is-2FS1H.tmp to %APPDATA%\Windows Defender\7zCon.sfx
from %APPDATA%\Windows Defender\is-59PGB.tmp to %APPDATA%\Windows Defender\7-zip.dll
from %APPDATA%\Windows Defender\is-PLU5M.tmp to %APPDATA%\Windows Defender\7-zip32.dll
from %APPDATA%\Windows Defender\is-FQK8I.tmp to %APPDATA%\Windows Defender\99ViXKOd1VLRtoVj46T5eFd9598qgy.bat
from %APPDATA%\Windows Defender\is-AQ4G9.tmp to %APPDATA%\Windows Defender\99ViXKOd1VLRtoVj46T5eFd9598qgy.vbs
from %APPDATA%\Windows Defender\is-U16L2.tmp to %APPDATA%\Windows Defender\W7lG01Z7Axxvic04p4jzRLL2EPQ79r.bat
Miscellaneous:
Creates and executes the following:
'%TEMP%\start.exe'
'%TEMP%\MW-01aa3a83-490b-48ae-a235-17a1f38b63cc\files\Installer.exe' /VERYSILENT
'%TEMP%\is-K9DOT.tmp\Installer.tmp' /SL5="$300E8,1962733,57856,%TEMP%\MW-01aa3a83-490b-48ae-a235-17a1f38b63cc\files\Installer.exe" /VERYSILENT
Executes the following:
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\Install.cmd""
'<SYSTEM32>\msiexec.exe' /i %TEMP%\Installer.msi /quiet
'<SYSTEM32>\msiexec.exe' /V
'<SYSTEM32>\msiexec.exe' -Embedding 3244CBCF9FDFD75447DDE98E03A74686
'<SYSTEM32>\expand.exe' -R files.cab -F:* files
'<SYSTEM32>\cmd.exe' /C ""%APPDATA%\Windows Defender\W7lG01Z7Axxvic04p4jzRLL2EPQ79r.bat""
'<SYSTEM32>\wscript.exe' "%APPDATA%\Windows Defender\99ViXKOd1VLRtoVj46T5eFd9598qgy.vbs"
'<SYSTEM32>\cmd.exe' /c "%APPDATA%\Windows Defender\99ViXKOd1VLRtoVj46T5eFd9598qgy.bat"
'<SYSTEM32>\net1.exe' stop wuauserv
'<SYSTEM32>\sc.exe' config wuauserv start= disabled
'<SYSTEM32>\cmd.exe' /c rd /s /q "%TEMP%\MW-01aa3a83-490b-48ae-a235-17a1f38b63cc\files"
'<SYSTEM32>\netsh.exe' Advfirewall set allprofiles state on
'<SYSTEM32>\schtasks.exe' /create /xml "%APPDATA%\Windows Defender\esHF0D7KPMui4M0wxfpyG866L26xK0.xml" /tn "Windows Local Network Service"
'<SYSTEM32>\xcopy.exe' /s /y /k /f "%APPDATA%\Windows Defender\Windows Local Network Service.bat" "%HOMEPATH%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup"
Curing recommendations
Windows
macOS
Linux
Android
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 .
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.
Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.
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.
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
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