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Trojan.Siggen29.53131
Added to the Dr.Web virus database:
2024-10-16
Virus description added:
2024-10-18
Technical Information
To ensure autorun and distribution
Sets the following service settings
[HKLM\System\CurrentControlSet\Services\16d352c5223eab19921ef343bd1c104c] 'Start' = '00000002'
[HKLM\System\CurrentControlSet\Services\16d352c5223eab19921ef343bd1c104c] 'ImagePath' = 'rundll32.exe "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager_x64.dll" main'
[HKLM\System\CurrentControlSet\Services\61eb1a92c5590cd1b199e91cc5b5b89f] 'Start' = '00000002'
[HKLM\System\CurrentControlSet\Services\61eb1a92c5590cd1b199e91cc5b5b89f] 'ImagePath' = 'rundll32.exe "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager.dll" main'
[HKLM\System\CurrentControlSet\Services\d619ecf5f4cc56da937a28a6ea3fd0f4] 'Start' = '00000002'
[HKLM\System\CurrentControlSet\Services\d619ecf5f4cc56da937a28a6ea3fd0f4] 'ImagePath' = 'rundll32.exe "%WINDIR%\ebcqeo.dll" PTiAXwtoVS'
Creates the following services
'16d352c5223eab19921ef343bd1c104c' rundll32.exe "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager_x64.dll" main
'61eb1a92c5590cd1b199e91cc5b5b89f' rundll32.exe "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager.dll" main
'd619ecf5f4cc56da937a28a6ea3fd0f4' rundll32.exe "%WINDIR%\ebcqeo.dll" PTiAXwtoVS
Malicious functions
Executes the following
'%WINDIR%\syswow64\taskkill.exe' /IM firefox.exe /f
Installs hooks to intercept notifications
on window messages:
Handler for all processes: %ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager_x64.dll
Handler for all processes: %ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager.dll
Terminates or attempts to terminate
the following user processes:
Modifies file system
Creates the following files
%TEMP%\nsy705f.tmp\esomdqskuj.map
%ProgramFiles(x86)%\chrome extension manager\msg.exe
%ProgramFiles(x86)%\chrome extension manager\msg.inf
%ProgramFiles(x86)%\chrome extension manager\uninstall.tar
%ProgramFiles(x86)%\chrome extension manager\infile.cab
%ProgramFiles(x86)%\chrome extension manager\chrome_manager.dll
%WINDIR%\ebcqeo.dll
%ProgramFiles(x86)%\chrome extension manager\infile_x64.cab
%ProgramFiles(x86)%\chrome extension manager\chrome_manager_x64.dll
%ALLUSERSPROFILE%\ntuser.pol
%TEMP%\nsd7428.tmp\execdos.dll
<SYSTEM32>\grouppolicy\gpt.ini
<SYSTEM32>\grouppolicy\adm\chrome.adm
%WINDIR%\installer\{07c45acf-209c-e775-24d0-3ab4327d5c96}\{947567da-3457-4eab-ff56-987452456322}.xpi
<SYSTEM32>\grouppolicy\machine\registry.pol
%WINDIR%\installer\{07c45acf-209c-e775-24d0-3ab4327d5c96}\419106e719bee1c6c1a4d5d0616920a2
%WINDIR%\installer\{07c45acf-209c-e775-24d0-3ab4327d5c96}\bb18525315b0eb64977c45719348b270
%WINDIR%\installer\{07c45acf-209c-e775-24d0-3ab4327d5c96}\aab8e6e6564b8d3a94b6e529d6e1277c
%WINDIR%\installer\{07c45acf-209c-e775-24d0-3ab4327d5c96}\7b9469331b57113ff413125d408af184
%TEMP%\nsd7428.tmp\nsexec.dll
%TEMP%\nsd7428.tmp\simplesc.dll
%TEMP%\nsd7428.tmp\inetc.dll
%TEMP%\nsd7428.tmp\ipconfig.dll
%TEMP%\nsd7428.tmp\md5dll.dll
%TEMP%\nsd7428.tmp\moreinfo.dll
%TEMP%\nsd7428.tmp\system.dll
%TEMP%\nsy705f.tmp\jxdgudzrxy.dll
<SYSTEM32>\grouppolicy\machine\template.pol
%TEMP%\nsd7428.tmp\nsjson.dll
Deletes the following files
<SYSTEM32>\grouppolicy\machine\template.pol
%WINDIR%\ebcqeo.dll
Modifies the following files
%APPDATA%\mozilla\firefox\profiles\apc2n9d1.default-release\extensions.json
Substitutes the following files
Network activity
UDP
DNS ASK ta####chnology.com
DNS ASK te#####ogiekingwin.com
Miscellaneous
Searches for the following windows
ClassName: '#32770' WindowName: ''
ClassName: 'Chrome_WidgetWin_1' WindowName: ''
ClassName: 'SysListView32' WindowName: ''
ClassName: 'MozillaWindowClass' WindowName: ''
ClassName: '' WindowName: ''
Creates and executes the following
'%ProgramFiles(x86)%\chrome extension manager\msg.exe' -c iffp
Executes the following
'%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Google\Chrome\ExtensionInstallForcelist /v 1 /t REG_SZ /d kocbepmfamjimgdjfobnecfcdmlooncl;file:///C:/Windows/Installer/{07c45acf-209c-e775-24d0-3ab4327...
'%WINDIR%\syswow64\rundll32.exe' "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager.dll" main --install-run
'%WINDIR%\syswow64\rundll32.exe' %WINDIR%\ebcqeo.dll PTiAXwtoVS kwli
'<SYSTEM32>\rundll32.exe' "%WINDIR%\ebcqeo.dll" PTiAXwtoVS
'<SYSTEM32>\rundll32.exe' "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager.dll" main
'<SYSTEM32>\rundll32.exe' "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager_x64.dll" main IFxpKZBJa ssWypWwP4
'%WINDIR%\syswow64\rundll32.exe' "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager.dll" main 1uHG3nwIH 2F5kZjcjn
'<SYSTEM32>\rundll32.exe' "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager_x64.dll" main --install-no-updater-run
'<SYSTEM32>\rundll32.exe' "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager_x64.dll" main
'<SYSTEM32>\svchost.exe' -k secsvcs
'%WINDIR%\syswow64\gpupdate.exe' /force
'<SYSTEM32>\raserver.exe' /offerraupdate
'%WINDIR%\syswow64\rundll32.exe' "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager_x64.dll" main --install-no-updater-run
'%WINDIR%\syswow64\gpupdate.exe' /force' (with hidden window)
'%WINDIR%\syswow64\reg.exe' add HKEY_LOCAL_MACHINE\Software\Policies\Google\Chrome\ExtensionInstallForcelist /v 1 /t REG_SZ /d kocbepmfamjimgdjfobnecfcdmlooncl;file:///C:/Windows/Installer/{07c45acf-209c-e775-24d0-3ab4327...' (with hidden window)
'%WINDIR%\syswow64\taskkill.exe' /IM firefox.exe /f' (with hidden window)
'%WINDIR%\syswow64\rundll32.exe' "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager_x64.dll" main --install-no-updater-run' (with hidden window)
'%WINDIR%\syswow64\rundll32.exe' "%ProgramFiles(x86)%\Chrome Extension Manager\chrome_manager.dll" main --install-run' (with hidden window)
'%ProgramFiles(x86)%\chrome extension manager\msg.exe' -c iffp' (with hidden window)
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
Download Dr.Web for Android
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