Trojan.MulDrop4.12965

Malicious functions:

To bypass firewall, removes or modifies the following registry keys:

[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List] '<SYSTEM32>\sessmgr.exe' = '<SYSTEM32>\sessmgr.exe:*:enabled:@xpsp2res.dll,-22019'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\sessmgr.exe' = '<SYSTEM32>\sessmgr.exe:*:enabled:@xpsp2res.dll,-22019'

Executes the following:

<SYSTEM32>\netsh.exe advfirewall firewall add rule name="Open Port 21" dir=in action=allow protocol=ALL localport=21
<SYSTEM32>\netsh.exe advfirewall firewall add rule name="Open Port 135" dir=in action=allow protocol=ALL localport=135
<SYSTEM32>\netsh.exe advfirewall firewall set rule group="File and Printer Sharing" new enable=Yes
<SYSTEM32>\netsh.exe advfirewall firewall add rule name="Open Port 139" dir=in action=allow protocol=ALL localport=139
<SYSTEM32>\secedit.exe /configure /db "%WINDIR%\pol.db" /cfg "%WINDIR%\pol.inf" /overwrite /quiet
<SYSTEM32>\secedit.exe /configure /db "%WINDIR%\pol.db" /cfg "%WINDIR%\pol.inf" /quiet
<SYSTEM32>\netsh.exe advfirewall firewall add rule name="Open Port 445" dir=in action=allow protocol=ALL localport=445
<SYSTEM32>\netsh.exe advfirewall firewall add rule name="All ICMP V4" protocol=icmpv4:any,any dir=in action=allow
<SYSTEM32>\netsh.exe firewall add portopening ALL 135 "Open Port 135"
<SYSTEM32>\netsh.exe firewall set service FileAndPrint
<SYSTEM32>\netsh.exe firewall set icmpsetting type=ALL mode=enable
<SYSTEM32>\netsh.exe firewall add portopening ALL 139 "Open Port 139"
<SYSTEM32>\netsh.exe firewall set opmode DISABLE
<SYSTEM32>\netsh.exe firewall add portopening ALL 21 "Open Port 21"
<SYSTEM32>\netsh.exe firewall add portopening ALL 445 "Open Port 445"

Modifies file system :

Creates the following files:

Deletes the following files:

Moves the following files:

Network activity:

UDP:

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.

Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

Download by serial number

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

Download by serial number

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.