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Trojan.DownLoader12.25003
Added to the Dr.Web virus database:
2015-02-16
Virus description added:
2015-02-16
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '*WinMediaManager0' = '"%ALLUSERSPROFILE%\WinMediaManager0\taskeng.exe"'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mmc.exe] 'Debugger' = 'wuauclt.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Firewall.cpl] 'Debugger' = 'wuauclt.exe'
Changes the following executable system files:
<SYSTEM32>\mmc.exe.rz3b9m
<SYSTEM32>\Firewall.cpl.9724E
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] 'EnableFirewall' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DoNotAllowExceptions' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
Executes the following:
'<SYSTEM32>\netsh.exe' firewall set opmode mode=disable profile=all
'<SYSTEM32>\sc.exe' config SharedAccess start= disabled
Modifies file system :
Creates the following files:
<SYSTEM32>\mmc.exe:Zone.Identifier
%ALLUSERSPROFILE%\WinMediaManager0\vboxservice.exe
%APPDATA%\stereoscope.sb
<SYSTEM32>\firewall.cpl:Zone.Identifier
Sets the 'hidden' attribute to the following files:
%ALLUSERSPROFILE%\WinMediaManager0\vboxservice.exe
Deletes the following files:
<SYSTEM32>\xRZRzsZFfNtGOfj
<SYSTEM32>\wokI[QYbmXTNCndHEQDSx
Moves the following system files:
from <SYSTEM32>\kiWckOQZjvbQhqxHPb to <SYSTEM32>\qgRCQNQRCaoJqpkp
from <SYSTEM32>\KXbeAVSXxxVFMceb to <SYSTEM32>\kiWckOQZjvbQhqxHPb
from <SYSTEM32>\ThUTkOHDsGqnqY to <SYSTEM32>\WRevRXIocWIxHQ
from <SYSTEM32>\qgRCQNQRCaoJqpkp to <SYSTEM32>\ThUTkOHDsGqnqY
from <SYSTEM32>\mmc.exe.rz3b9m to <SYSTEM32>\qOyBpsSbQMjaPSxog
from <SYSTEM32>\mmc.exe to <SYSTEM32>\mmc.exe.rz3b9m
from <SYSTEM32>\eoeauoEVuObsQqvPr to <SYSTEM32>\KXbeAVSXxxVFMceb
from <SYSTEM32>\qOyBpsSbQMjaPSxog to <SYSTEM32>\eoeauoEVuObsQqvPr
from <SYSTEM32>\zwWvUtEUPPencpNHGh to <SYSTEM32>\UxkClcERxjnaRCpoR
from <SYSTEM32>\YOwFrtKAQqDWUnuXq to <SYSTEM32>\zwWvUtEUPPencpNHGh
from <SYSTEM32>\MBjzqaBl[gHAHgvq to <SYSTEM32>\xRZRzsZFfNtGOfj
from <SYSTEM32>\UxkClcERxjnaRCpoR to <SYSTEM32>\MBjzqaBl[gHAHgvq
from <SYSTEM32>\iTGSgIzxmVHGcozoGh to <SYSTEM32>\CGJoAOzdOLoZMYB
from <SYSTEM32>\WRevRXIocWIxHQ to <SYSTEM32>\iTGSgIzxmVHGcozoGh
from <SYSTEM32>\XObOSCrMHxdGRlK to <SYSTEM32>\YOwFrtKAQqDWUnuXq
from <SYSTEM32>\CGJoAOzdOLoZMYB to <SYSTEM32>\XObOSCrMHxdGRlK
from <SYSTEM32>\YlfmjdlrutTmTUZQbhBy to <SYSTEM32>\SzIzQqLjCYyRNQgYRYBNIg
from <SYSTEM32>\pngyJYseHWhcxVClxyS to <SYSTEM32>\YlfmjdlrutTmTUZQbhBy
from <SYSTEM32>\QSheXd[hclMoegauAf to <SYSTEM32>\rOIAJYBkNaNwGZsWQLRs
from <SYSTEM32>\SzIzQqLjCYyRNQgYRYBNIg to <SYSTEM32>\QSheXd[hclMoegauAf
from <SYSTEM32>\Firewall.cpl.9724E to <SYSTEM32>\MGMBcGyHVGVhHhGBSfD
from <SYSTEM32>\firewall.cpl to <SYSTEM32>\Firewall.cpl.9724E
from <SYSTEM32>\uZsfHJuaSScwNSOHlXbcUD to <SYSTEM32>\pngyJYseHWhcxVClxyS
from <SYSTEM32>\MGMBcGyHVGVhHhGBSfD to <SYSTEM32>\uZsfHJuaSScwNSOHlXbcUD
from <SYSTEM32>\RFAwzvmVqEhUlcSMUUicb to <SYSTEM32>\qlvYJetoyjXwuYJBuuLYzm
from <SYSTEM32>\wnMDxrtJMpPZxzpJOXqg to <SYSTEM32>\RFAwzvmVqEhUlcSMUUicb
from <SYSTEM32>\gWwppaKXklpiIDGsCsyO to <SYSTEM32>\wokI[QYbmXTNCndHEQDSx
from <SYSTEM32>\qlvYJetoyjXwuYJBuuLYzm to <SYSTEM32>\gWwppaKXklpiIDGsCsyO
from <SYSTEM32>\oQQOwpIdHKMecroXrZ to <SYSTEM32>\uJeiWAyUubxkfyIsZNpiFfo
from <SYSTEM32>\rOIAJYBkNaNwGZsWQLRs to <SYSTEM32>\oQQOwpIdHKMecroXrZ
from <SYSTEM32>\DjJMFKsgEyenqWJHATxRq to <SYSTEM32>\wnMDxrtJMpPZxzpJOXqg
from <SYSTEM32>\uJeiWAyUubxkfyIsZNpiFfo to <SYSTEM32>\DjJMFKsgEyenqWJHATxRq
Moves itself:
from <Full path to virus> to %ALLUSERSPROFILE%\WinMediaManager0\taskeng.exe
Network activity:
Connects to:
TCP:
HTTP POST requests:
li####easyhaha.ru/5/page.php
UDP:
DNS ASK li####easyhaha.ru
Miscellaneous:
Searches for the following windows:
ClassName: 'Shell_TrayWnd' WindowName: ''
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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