Trojan.MulDrop9.40442

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKLM>\Software\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad] 'Web Event Logger' = '{79FEACFF-FFCE-815E-A900-316290B5B738}'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = '<SYSTEM32>\ctfmon.exe'

Malicious functions

Modifies settings of Windows Internet Explorer

[<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1601' = '00000000'
[<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1601' = '00000000'
[<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1601' = '00000000'
[<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
[<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1601' = '00000000'

Modifies file system

Creates the following files

<SYSTEM32>\jnobmpbb.exe
<SYSTEM32>\hlmckeqn.dll
<SYSTEM32>\surf.dat
%TEMP%\kdojpbpk.htm
%TEMP%\kibcoabd.htm
%TEMP%\bjjpgmdj.htm

Deletes the following files

%TEMP%\kibcoabd.htm
%TEMP%\kdojpbpk.htm

Network activity

TCP

HTTP GET requests

http://ga##prom.ru/index.htm
http://ga##prom.ru/disabled/style.css
http://ga##prom.ru/disabled/modernizr.js
http://ga##prom.ru/disabled/html5shiv.js
http://ga##prom.ru/disabled/i/_/b-header-parking__content-logo.png
http://ga##prom.ru/disabled/i/_/b-menu-external__logo_style_regru.png
http://ga##prom.ru/disabled/i/_/b-http-status_icon_stop.png
http://ga##prom.ru/disabled/script.js
http://ga##prom.ru/disabled/english.js

HTTP POST requests

http://www.re##ine.ru/index.php

UDP

DNS ASK ki###-bank.ru
DNS ASK re##ine.ru
DNS ASK ga##prom.ru
DNS ASK co##.jquery.com

Miscellaneous

Searches for the following windows

ClassName: 'IEFrame' WindowName: 'MicroSoft-Corp2 - Microsoft Internet Explorer'
ClassName: 'IEFrame' WindowName: 'MicroSoft-Corp1 - Microsoft Internet Explorer'
ClassName: '' WindowName: ''
ClassName: 'MS_AutodialMonitor' WindowName: ''
ClassName: 'MS_WebcheckMonitor' WindowName: ''
ClassName: 'IEFrame' WindowName: 'MicroSoft-Corp3 - Microsoft Internet Explorer'

Creates and executes the following

'<SYSTEM32>\jnobmpbb.exe'
'<SYSTEM32>\jnobmpbb.exe' ' (with hidden window)

Executes the following

'%ProgramFiles%\internet explorer\iexplore.exe' %TEMP%\kibcoabd.htm
'%ProgramFiles%\internet explorer\iexplore.exe' %TEMP%\kdojpbpk.htm
'<SYSTEM32>\rundll32.exe' "%ProgramFiles%\Microsoft Office\Office12\GrooveUtil.DLL",GetResourceModulePath g6BojgnB7kM4VJ3x/i0Sl93nk84Oc6Ut
'<SYSTEM32>\rundll32.exe' "%ProgramFiles%\Microsoft Office\Office12\GrooveUtil.DLL",GetResourceModulePath IlLnyRalPXeNKwbzaR/IK1bY1AHhXqx2
'<SYSTEM32>\ctfmon.exe'
'%ProgramFiles%\internet explorer\iexplore.exe' %TEMP%\bjjpgmdj.htm
'<SYSTEM32>\rundll32.exe' "%ProgramFiles%\Microsoft Office\Office12\GrooveUtil.DLL",GetResourceModulePath suE72VfsJqifxKMJwRtglbSufiqJi6tq

Curing recommendations

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.

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

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Download on App Store

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

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Download Dr.Web

Download by serial number

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.

Technologies

Terminology

Training and education

Myths

Technical Information

Curing recommendations

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