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BackDoor.IRC.Sdbot.18601
Added to the Dr.Web virus database:
2015-01-19
Virus description added:
2015-02-03
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '*WindowsMnger' = '"%ALLUSERSPROFILE%\WindowsMnger\dwm.exe"'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mmc.exe] 'Debugger' = 'wuauclt.exe'
Changes the following executable system files:
<SYSTEM32>\mmc.exe.Z80
<SYSTEM32>\Firewall.cpl.9R1Y
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%\WindowsMnger\btplayerctrl.exe
<SYSTEM32>\mmc.exe:Zone.Identifier
Sets the 'hidden' attribute to the following files:
%ALLUSERSPROFILE%\WindowsMnger\btplayerctrl.exe
Deletes the following files:
<SYSTEM32>\ApgyuikLrTAcSB
<SYSTEM32>\RAyLwwexIHhQSFTNPj
Moves the following system files:
from <SYSTEM32>\DYXBwzpSKnTl to <SYSTEM32>\JPiFBJIrcyyfz
from <SYSTEM32>\vcCtQpxMWimMr to <SYSTEM32>\DYXBwzpSKnTl
from <SYSTEM32>\SglhBkYJtqFSEc to <SYSTEM32>\tCt[aHfIaVprArP
from <SYSTEM32>\JPiFBJIrcyyfz to <SYSTEM32>\SglhBkYJtqFSEc
from <SYSTEM32>\mmc.exe to <SYSTEM32>\mmc.exe.Z80
from <SYSTEM32>\phCVElHchjgRehJHDE to <SYSTEM32>\RAyLwwexIHhQSFTNPj
from <SYSTEM32>\tIKmoMYxxRx to <SYSTEM32>\vcCtQpxMWimMr
from <SYSTEM32>\mmc.exe.Z80 to <SYSTEM32>\tIKmoMYxxRx
from <SYSTEM32>\tCt[aHfIaVprArP to <SYSTEM32>\xylmbooBpFTqy
from <SYSTEM32>\jhXwbJvEuksw to <SYSTEM32>\ItPwcqZjYsyB
from <SYSTEM32>\NhWaFTtxXNcOf to <SYSTEM32>\jhXwbJvEuksw
from <SYSTEM32>\VnyVKcJoDswe to <SYSTEM32>\ApgyuikLrTAcSB
from <SYSTEM32>\ItPwcqZjYsyB to <SYSTEM32>\VnyVKcJoDswe
from <SYSTEM32>\zjsCCWTZSWRr to <SYSTEM32>\FKUhZKcwczt
from <SYSTEM32>\xylmbooBpFTqy to <SYSTEM32>\zjsCCWTZSWRr
from <SYSTEM32>\CCMMtJlaQkcagR to <SYSTEM32>\NhWaFTtxXNcOf
from <SYSTEM32>\FKUhZKcwczt to <SYSTEM32>\CCMMtJlaQkcagR
from <SYSTEM32>\LbQvLAooPZmZtYWrjDld to <SYSTEM32>\phCVElHchjgRehJHDE
from <SYSTEM32>\pgPGNnYqnwKORJKHe to <SYSTEM32>\FfoJiJwHwhArWFAJeU
from <SYSTEM32>\BIVSKFBHksVgGHQWAsJM to <SYSTEM32>\pgPGNnYqnwKORJKHe
from <SYSTEM32>\hOoYJblVydZCAyKVL to <SYSTEM32>\oYbDOGvybtPAvwkbsf
from <SYSTEM32>\FfoJiJwHwhArWFAJeU to <SYSTEM32>\hOoYJblVydZCAyKVL
from <SYSTEM32>\Firewall.cpl.9R1Y to <SYSTEM32>\MPYZxCTpGYFBTnBuIT
from <SYSTEM32>\firewall.cpl to <SYSTEM32>\Firewall.cpl.9R1Y
from <SYSTEM32>\GjBAAgoYvEwjEhfAYatY to <SYSTEM32>\BIVSKFBHksVgGHQWAsJM
from <SYSTEM32>\MPYZxCTpGYFBTnBuIT to <SYSTEM32>\GjBAAgoYvEwjEhfAYatY
from <SYSTEM32>\oYbDOGvybtPAvwkbsf to <SYSTEM32>\DuAmmvNYPwGCfGSZmGPxI
from <SYSTEM32>\UAUMhCVyDqdRlBGdlt to <SYSTEM32>\lzswAgkiPOAwyEoBqyx
from <SYSTEM32>\EsHxcCuPwbpDMUJdkU to <SYSTEM32>\UAUMhCVyDqdRlBGdlt
from <SYSTEM32>\OEqnTsTvAvSaTZmIZuPV to <SYSTEM32>\LbQvLAooPZmZtYWrjDld
from <SYSTEM32>\lzswAgkiPOAwyEoBqyx to <SYSTEM32>\OEqnTsTvAvSaTZmIZuPV
from <SYSTEM32>\NWzORDZPJHezQaORVyOxX to <SYSTEM32>\xojCabLKIbZaBCEJc
from <SYSTEM32>\DuAmmvNYPwGCfGSZmGPxI to <SYSTEM32>\NWzORDZPJHezQaORVyOxX
from <SYSTEM32>\zBUtgAXsjHvpfPHpJy to <SYSTEM32>\EsHxcCuPwbpDMUJdkU
from <SYSTEM32>\xojCabLKIbZaBCEJc to <SYSTEM32>\zBUtgAXsjHvpfPHpJy
Moves itself:
from <Full path to virus> to %ALLUSERSPROFILE%\WindowsMnger\dwm.exe
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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