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Trojan.DownLoader11.47799
Added to the Dr.Web virus database:
2014-11-30
Virus description added:
2014-11-30
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '*MediaMangr' = '"%ALLUSERSPROFILE%\MediaMangr\acrotray.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.S78y0
<SYSTEM32>\Firewall.cpl.Sd81JE
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:
%ALLUSERSPROFILE%\MediaMangr\regmon.exe
<SYSTEM32>\firewall.cpl:Zone.Identifier
Sets the 'hidden' attribute to the following files:
%ALLUSERSPROFILE%\MediaMangr\regmon.exe
Deletes the following files:
<SYSTEM32>\IqaugSDDqNJfbe
<SYSTEM32>\grzZGOYWtTYjgwnCjwKHccn
Moves the following system files:
from <SYSTEM32>\mmc.exe.S78y0 to <SYSTEM32>\j{mAtOHpqKdTNN
from <SYSTEM32>\j{mAtOHpqKdTNN to <SYSTEM32>\sMFwn[cLGTBDtOG
from <SYSTEM32>\sMFwn[cLGTBDtOG to <SYSTEM32>\CFCinWgfYASfPMjtZ
from <SYSTEM32>\mmc.exe to <SYSTEM32>\mmc.exe.S78y0
from <SYSTEM32>\ItRTqxfyKu{dPNtilVdd to <SYSTEM32>\nUtPtxCLGBncKvxPhQK
from <SYSTEM32>\nUtPtxCLGBncKvxPhQK to <SYSTEM32>\ZIBFTaOC[PtDXxEKLxSPwT
from <SYSTEM32>\ZIBFTaOC[PtDXxEKLxSPwT to <SYSTEM32>\grzZGOYWtTYjgwnCjwKHccn
from <SYSTEM32>\CFCinWgfYASfPMjtZ to <SYSTEM32>\JnyJPokdHooFZy
from <SYSTEM32>\dmjsgOwJzqQEka to <SYSTEM32>\mcozgzHyfYEQv
from <SYSTEM32>\mcozgzHyfYEQv to <SYSTEM32>\cuKGPkEzlJryQnF
from <SYSTEM32>\cuKGPkEzlJryQnF to <SYSTEM32>\IqaugSDDqNJfbe
from <SYSTEM32>\kpVBZYfMLQnLD to <SYSTEM32>\dmjsgOwJzqQEka
from <SYSTEM32>\JnyJPokdHooFZy to <SYSTEM32>\iwdnuqKlYEuvvsc
from <SYSTEM32>\iwdnuqKlYEuvvsc to <SYSTEM32>\WeGudmYaKvGefIFOs
from <SYSTEM32>\WeGudmYaKvGefIFOs to <SYSTEM32>\kpVBZYfMLQnLD
from <SYSTEM32>\rfHyqngFVdnTAQLsAxnrH to <SYSTEM32>\ItRTqxfyKu{dPNtilVdd
from <SYSTEM32>\clHieoEuLmYTVnjhQMa to <SYSTEM32>\qLYNgECalVTBAEzBSYYnLD
from <SYSTEM32>\qLYNgECalVTBAEzBSYYnLD to <SYSTEM32>\JepgVJHwMLHyGerJsOPuGff
from <SYSTEM32>\JepgVJHwMLHyGerJsOPuGff to <SYSTEM32>\UlnGgpvqUTq[yMcSWSbwst
from <SYSTEM32>\DUPbQxttVywkWcbUikDg to <SYSTEM32>\clHieoEuLmYTVnjhQMa
from <SYSTEM32>\firewall.cpl to <SYSTEM32>\Firewall.cpl.Sd81JE
from <SYSTEM32>\Firewall.cpl.Sd81JE to <SYSTEM32>\HKkR[tQjXImfeLihXzgS
from <SYSTEM32>\HKkR[tQjXImfeLihXzgS to <SYSTEM32>\DUPbQxttVywkWcbUikDg
from <SYSTEM32>\UlnGgpvqUTq[yMcSWSbwst to <SYSTEM32>\nDXJELWOdbHSpkJAxTKh
from <SYSTEM32>\RSOVpWmCDLGfgLpQaCHHtXE to <SYSTEM32>\GyfKDtiSAzRebocZQZeF
from <SYSTEM32>\GyfKDtiSAzRebocZQZeF to <SYSTEM32>\eEC[MuPeWqUpkasMFUPoMhb
from <SYSTEM32>\eEC[MuPeWqUpkasMFUPoMhb to <SYSTEM32>\rfHyqngFVdnTAQLsAxnrH
from <SYSTEM32>\StCmCnkLnsgBAGgKOYxy to <SYSTEM32>\RSOVpWmCDLGfgLpQaCHHtXE
from <SYSTEM32>\nDXJELWOdbHSpkJAxTKh to <SYSTEM32>\WRGedVRNSpZrNrHaDfWLhiv
from <SYSTEM32>\WRGedVRNSpZrNrHaDfWLhiv to <SYSTEM32>\CocbqUvwbZTuadGkNnDUGD
from <SYSTEM32>\CocbqUvwbZTuadGkNnDUGD to <SYSTEM32>\StCmCnkLnsgBAGgKOYxy
Moves itself:
from <Full path to virus> to %ALLUSERSPROFILE%\MediaMangr\acrotray.exe
Network activity:
Connects to:
TCP:
HTTP POST requests:
lo####015http.com/inout.php
UDP:
DNS ASK lo####015http.com
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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