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Trojan.MulDrop28.24474

Added to the Dr.Web virus database: 2024-09-29

Virus description added:

Technical Information

To ensure autorun and distribution
Sets the following service settings
  • [HKLM\System\CurrentControlSet\Services\AudioSrv] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\Dhcp] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\Dnscache] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\eventlog] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\LanmanServer] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\LanmanWorkstation] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\PlugPlay] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\ProtectedStorage] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\SamSs] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\seclogon] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\SENS] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\ShellHWDetection] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\Spooler] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\Themes] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\Winmgmt] 'Start' = '00000002'
  • [HKLM\System\CurrentControlSet\Services\wuauserv] 'Start' = '00000002'
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
  • Windows Security Center
Launches a large number of processes
Modifies file system
Creates the following files
  • %TEMP%\1313497.bat
Deletes the following files
  • %TEMP%\1313497.bat
Miscellaneous
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c %TEMP%\1313497.bat
  • '%WINDIR%\syswow64\sc.exe' config WebClient start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config W32Time start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config VSS start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config UPS start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config UMWdf start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config TrkWks start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config Themes start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config TermService start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config TapiSrv start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config SysmonLog start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config swprv start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config stisvc start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config Spooler start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config ShellHWDetection start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config SharedAccess start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config SENS start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config seclogon start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config Schedule start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config SCardSvr start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config winmgmt start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config WmdmPmSN start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config Wmi start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config WmiApSrv start= DISABLED
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="System" Call cleareventlog
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="Security" Call cleareventlog
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="OAlerts" Call cleareventlog
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="Media" Call cleareventlog
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="Key" Call cleareventlog
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="Internet" Call cleareventlog
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="HardwareEvents" Call cleareventlog
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="Application" Call cleareventlog
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog get filename
  • '%WINDIR%\syswow64\sc.exe' config MDM start= DISABLED
  • '%WINDIR%\syswow64\cmd.exe' /c wmic nteventlog get filename
  • '%WINDIR%\syswow64\sc.exe' config wscsvc start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config upnphost start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config TlntSvr start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config SSDPSRV start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config srservice start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config FastUserSwitchingCompatibility start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config xmlprov start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config WZCSVC start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config wuauserv start= AUTO
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="Windows" Call cleareventlog
  • '%WINDIR%\syswow64\sc.exe' config SamSs start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config RpcSs start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config NtLmSsp start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config HidServ start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config helpsvc start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config EventSystem start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config Eventlog start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config ERSvc start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config Dnscache start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config dmserver start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config dmadmin start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config Dhcp start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config DcomLaunch start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config CryptSvc start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config COMSysApp start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config ClipSrv start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config CiSvc start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config Browser start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config BITS start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config AudioSrv start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config AppMgmt start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config Alerter start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config HTTPFilter start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config RpcLocator start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config ImapiService start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config lanmanworkstation start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config remoteAccess start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config RDSessMgr start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config RasMan start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config RasAuto start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config ProtectedStorage start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config PolicyAgent start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config PlugPlay start= AUTO
  • '%WINDIR%\syswow64\sc.exe' config NtmsSvc start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config lanmanserver start= AUTO
  • '%WINDIR%\syswow64\wbem\wmic.exe' nteventlog where filename="" Call cleareventlog
  • '%WINDIR%\syswow64\sc.exe' config Netman start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config Netlogon start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config NetDDEdsdm start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config NetDDE start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config MSIServer start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config MSDTC start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config mnmsrvc start= DEMAND
  • '%WINDIR%\syswow64\sc.exe' config Messenger start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config LmHosts start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config Nla start= DISABLED
  • '%WINDIR%\syswow64\sc.exe' config remoteRegistry start= DISABLED
  • '%WINDIR%\syswow64\cmd.exe' /c %TEMP%\1313497.bat' (with hidden window)

Curing recommendations

  1. 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.
  2. 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.
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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

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

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  1. 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.
  2. 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.

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