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Trojan.MulDrop17.65404

Added to the Dr.Web virus database: 2021-07-16

Virus description added:

Technical Information

Malicious functions
Searches for windows to
detect analytical utilities:
  • ClassName: 'OLLYDBG', WindowName: ''
  • ClassName: 'pediy06', WindowName: ''
  • ClassName: 'TIdaWindow', WindowName: ''
  • ClassName: 'APIMonitor By Rohitab', WindowName: ''
  • ClassName: 'FileMonClass', WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
  • ClassName: 'PROCEXPL', WindowName: 'Process Explorer - SysInternals: www.sysinternals.com [qazdelz\user]'
  • ClassName: 'PROCEXPL', WindowName: ''
  • ClassName: 'PROCMON_WINDOW_CLASS', WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
Modifies file system
Creates the following files
  • %TEMP%\cmdlineextinstallerexe.exe
  • %WINDIR%\syswow64\cmdlineext_x64.dll
  • %TEMP%\drm_dyndata_7330008.dll
  • %APPDATA%\securom\userdata\readme.txt
  • %APPDATA%\securom\userdata\securom_v7_01.tmp
  • %APPDATA%\securom\userdata\securom_v7_01.dat
  • %APPDATA%\securom\userdata\securom_v7_01.bak
  • %APPDATA%\securom\userdata\ѓϵϳѕђͽͻϯіχϯπρθϱєϱѓϵϳѕ
  • %APPDATA%\securom\userdata\ѓϵϳѕђͽͻϯіχϯπρђϻϵљѓϵϳѕ
Sets the 'hidden' attribute to the following files
  • %APPDATA%\securom\userdata\securom_v7_01.bak
Deletes the following files
  • %TEMP%\cmdlineextinstallerexe.exe
Miscellaneous
Searches for the following windows
  • ClassName: '18467-41' WindowName: ''
  • ClassName: 'ThunderRT6FormDC' WindowName: 'Settings'
  • ClassName: 'ThunderRT6Main' WindowName: 'Pr0t.St0p v1.0'
  • ClassName: 'ThunderRT6FormDC' WindowName: 'Pr0t.St0p v1.0'
  • ClassName: 'TApplication' WindowName: '<File name>'
  • ClassName: 'ThunderRT6Main' WindowName: 'SD4 Sucks v0.10 by Joseph Cox'
  • ClassName: 'ToolbarWindow32В ' WindowName: ''
  • ClassName: 'ReBarWindow32' WindowName: ''
  • ClassName: '#32770' WindowName: 'Y.A.S.U v1.04 - Copyright В© 2006 CureROM DT'
  • ClassName: '#32770' WindowName: 'Y.A.S.U v1.03 - Copyright В© 2006 CureROM DT'
  • ClassName: '#32770' WindowName: 'Task Explorer II - by Ntoskrnl'
  • ClassName: '#32770' WindowName: 'Atiptool'
  • ClassName: 'ThunderRT6Main' WindowName: 'SysAnalyzer'
  • ClassName: 'SysAnalyzer' WindowName: 'ThunderRT6Main'
  • ClassName: '' WindowName: 'APIMonitor By Rohitab'
  • ClassName: 'File Monitor - Sysinternals: www.sysinternals.com' WindowName: 'FileMonClass'
  • ClassName: 'ThunderRT6Main' WindowName: 'ApiLogger'
  • ClassName: 'ApiLogger' WindowName: 'ThunderRT6Main'
  • ClassName: 'SysPager' WindowName: ''
  • ClassName: 'TrayNotifyWnd' WindowName: ''
  • ClassName: 'JCDSPY_NT_001' WindowName: 'DriverspyNT v1.20. (c)2001,2002 Collake Software'
  • ClassName: 'cuteProgressClass' WindowName: ''
  • ClassName: 'c3' WindowName: 'API Functions'
  • ClassName: 'Fucker of CDROM Protections v0.81 Beta' WindowName: 'TForm1'
  • ClassName: 'c1' WindowName: 'KaKeeware Application Monitor 1.21'
  • ClassName: 'TMainForm' WindowName: 'PEBrowse Professional Interactive'
  • ClassName: 'SysAnalyzer Configuration Wizard' WindowName: 'ThunderRT6Main'
  • ClassName: 'ThunderRT6Main' WindowName: 'SysAnalyzer Configuration Wizard'
  • ClassName: 'sniff_hit' WindowName: 'ThunderRT6Main'
  • ClassName: 'ThunderRT6Main' WindowName: 'sniff_hit'
  • ClassName: 'Process Analyzer - right click on a process to access menu' WindowName: 'ThunderRT6Main'
  • ClassName: 'ThunderRT6Main' WindowName: 'Process Analyzer - right click on a process to access menu'
  • ClassName: 'SafeDisc4 Hider 1.1 В© 2005 SKULL' WindowName: 'Tsd4hideform'
  • ClassName: 'Tsd4hideform' WindowName: 'SafeDisc4 Hider 1.1 В© 2005 SKULL'
  • ClassName: 'SafeDisc4 Hider 1.0 В© 2005 SKULL' WindowName: 'TForm1'
  • ClassName: 'Lbr68' WindowName: ''
  • ClassName: 'icu_dbg' WindowName: ''
  • ClassName: 'kk1' WindowName: ''
  • ClassName: 'WispWindowClass' WindowName: 'Syser [Ctrl+F12]'
  • ClassName: 'ThunderRT6Main' WindowName: 'Anti-Blaxx'
  • ClassName: '#32770' WindowName: 'Starforce Nightmare'
  • ClassName: 'Virtual-CD-Hide' WindowName: 'Virtual-CD-Hide'
  • ClassName: 'ThunderRT6Main' WindowName: 'SR7Stop'
  • ClassName: 'ThunderRT6Main' WindowName: 'SR7.Stop v1.2'
  • ClassName: 'ThunderRT6Main' WindowName: 'SR7.Stop v1.1'
  • ClassName: 'ThunderRT6FormDC' WindowName: 'SR7.Stop v1.1'
  • ClassName: '' WindowName: '[ LordPE Deluxe ] by yoda'
  • ClassName: '[ LordPE Deluxe ] by yoda' WindowName: ''
  • ClassName: '' WindowName: '[ LordPE Dumper Server ]'
  • ClassName: 'SHADOW' WindowName: ''
  • ClassName: '[ LordPE Dumper Server ]' WindowName: ''
  • ClassName: 'TForm1' WindowName: 'SafeDisc4 Hider 1.0 В© 2005 SKULL'
  • ClassName: '#32770' WindowName: '[ LordPE Deluxe b ] by yoda'
  • ClassName: '[ LordPE Deluxe b ] by yoda' WindowName: '#32770'
  • ClassName: '#32770' WindowName: '[ LordPE RoyalTS ] by yoda'
  • ClassName: '[ LordPE RoyalTS ] by yoda' WindowName: '#32770'
  • ClassName: '#32770' WindowName: 'STARFUCK TOOL'
  • ClassName: 'STARFUCK TOOL' WindowName: '#32770'
  • ClassName: 'PEBrowse Professional Interactive' WindowName: 'TMainForm'
  • ClassName: 'TForm1' WindowName: 'Fucker of CDROM Protections v0.81 Beta'
  • ClassName: 'ToolbarWindow32' WindowName: ''
  • ClassName: 'Fucker of CDROM Protections v0.83 Beta' WindowName: 'TForm1'
  • ClassName: '#32770' WindowName: 'BusTrace Status'
  • ClassName: 'BusTrace Status' WindowName: '#32770'
  • ClassName: 'TApplication' WindowName: 'SafeDisc4 Hider'
  • ClassName: 'SafeDisc4 Hider' WindowName: 'TApplication'
  • ClassName: 'TForm1' WindowName: 'Fucker of CDROM Protections v0.83 Beta'
  • ClassName: 'MPWClass' WindowName: ''
Creates and executes the following
  • '%TEMP%\cmdlineextinstallerexe.exe'
Executes the following
  • '<SYSTEM32>\regsvr32.exe' /s %WINDIR%\SysWOW64\cmdlineext_x64.dll

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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