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Trojan.Siggen15.14511

Added to the Dr.Web virus database: 2021-09-13

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\RunOnce] 'WindowsUpdateCheck' = '%TEMP%\MSBuild.exe'
Creates or modifies the following files
  • %HOMEPATH%\start menu\programs\startup\.b580e5043e45a7e4d097
Creates the following files on removable media
  • <Drive name for removable media>:\.b580e5043e45a7e4d097
  • <Drive name for removable media>:\join.avi
  • <Drive name for removable media>:\000814251_video_01.avi
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
  • Windows Defender
Executes the following
  • '%WINDIR%\syswow64\taskkill.exe' /IM VBoxSDS.exe /F
  • '%WINDIR%\syswow64\taskkill.exe' /IM iexplore.exe /F
  • '%WINDIR%\syswow64\taskkill.exe' /IM U8SmartClient.exe /F
  • '%WINDIR%\syswow64\taskkill.exe' /IM "UFSoft.U8.OC.QuartzScheduler.exe" /F
  • '%WINDIR%\syswow64\taskkill.exe' /IM Att.exe /F
  • '%WINDIR%\syswow64\taskkill.exe' /IM rcrelay.exe /F
  • '%WINDIR%\syswow64\net.exe' stop "igfxCUIService2.0.0.0"
  • '%WINDIR%\syswow64\net.exe' stop VMwareHostd
  • '%WINDIR%\syswow64\net.exe' stop "SQLBrowser"
  • '%WINDIR%\syswow64\net.exe' stop "MSSQL$SHOPCONTROL9"
  • '%WINDIR%\syswow64\net.exe' stop U8WorkerService2
  • '%WINDIR%\syswow64\taskkill.exe' /F /IM UFIDA.U8.ECE.UTU.Services.exe
  • '%WINDIR%\syswow64\taskkill.exe' /IM httpd.exe /F
  • '%WINDIR%\syswow64\net.exe' stop MSSQL$
  • '%WINDIR%\syswow64\taskkill.exe' /IM pg_ctl.exe /F
  • '%WINDIR%\syswow64\taskkill.exe' /IM BackupExec.exe /F
  • '%WINDIR%\syswow64\taskkill.exe' /F /IM Veeam.Backup.Agent.ConfigurationService.exe
  • '%WINDIR%\syswow64\taskkill.exe' /IM DDSoftPwsTomcat9.exe /F
  • '%WINDIR%\syswow64\taskkill.exe' /IM ReportingServicesService.exe /F
  • '%WINDIR%\syswow64\taskkill.exe' /IM Tomcat7w.exe /F
  • '%WINDIR%\syswow64\net.exe' stop "MSOLAP$SHOPCONTROL9"
  • '%WINDIR%\syswow64\taskkill.exe' /IM sqlservr.exe /F
  • '%WINDIR%\syswow64\taskkill.exe' /IM ThunderPlatform.exe /F
  • '%WINDIR%\syswow64\net.exe' stop HaoZipSvc
  • '%WINDIR%\syswow64\net.exe' stop U8WorkerService1
  • '%WINDIR%\syswow64\net.exe' stop UIODetect
  • '%WINDIR%\syswow64\net.exe' stop "SQLSERVERAGENT"
  • '%WINDIR%\syswow64\taskkill.exe' /F /IM U8WorkerService.exe
  • '%WINDIR%\syswow64\taskkill.exe' /F /IM UFIDA.U8.UAP.ReportService.exe
  • '%WINDIR%\syswow64\net.exe' stop SQLSERVERAGENT
Injects code into
the following user processes:
  • msbuild.exe
Modifies file system
Creates the following files
  • %TEMP%\rifhxtf.bat
  • %HOMEPATH%\voip\how to back your files.txt
  • %HOMEPATH%\videos\.b580e5043e45a7e4d097
  • %HOMEPATH%\videos\how to back your files.txt
  • %HOMEPATH%\templates\.b580e5043e45a7e4d097
  • %HOMEPATH%\templates\how to back your files.txt
  • %HOMEPATH%\start menu\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\how to back your files.txt
  • %HOMEPATH%\how to back your files.txt
  • %HOMEPATH%\voip\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\winrar\how to back your files.txt
  • %HOMEPATH%\start menu\programs\total commander\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\total commander\how to back your files.txt
  • %HOMEPATH%\start menu\programs\telegram desktop\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\telegram desktop\how to back your files.txt
  • %HOMEPATH%\start menu\programs\maintenance\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\maintenance\how to back your files.txt
  • %HOMEPATH%\start menu\programs\how to back your files.txt
  • %HOMEPATH%\start menu\programs\winrar\.b580e5043e45a7e4d097
  • C:\msocache\all users\{90140000-0117-0409-1000-0000000ff1ce}-c\access.en-us\.b580e5043e45a7e4d097
  • C:\msocache\all users\{90140000-0117-0409-1000-0000000ff1ce}-c\how to back your files.txt
  • C:\msocache\all users\{90140000-0117-0409-1000-0000000ff1ce}-c\.b580e5043e45a7e4d097
  • %TEMP%\msbuild.exe
  • %ALLUSERSPROFILE%\local\.b580e5043e45a7e4d097
  • %TEMP%\ids.txt
  • z:\.b580e5043e45a7e4d097
  • D:\.b580e5043e45a7e4d097
  • C:\.b580e5043e45a7e4d097
  • z:\system volume information\.b580e5043e45a7e4d097
  • D:\$recycle.bin\.b580e5043e45a7e4d097
  • %TEMP%\pkgecycbuc.vbs
  • D:\system volume information\.b580e5043e45a7e4d097
  • C:\msocache\.b580e5043e45a7e4d097
  • C:\how to back your files.txt
  • C:\users\.b580e5043e45a7e4d097
  • C:\msocache\how to back your files.txt
  • C:\users\how to back your files.txt
  • %HOMEPATH%\.b580e5043e45a7e4d097
  • C:\msocache\all users\.b580e5043e45a7e4d097
  • C:\msocache\all users\how to back your files.txt
  • D:\$recycle.bin\s-1-5-21-1960123792-2022915161-3775307078-1001\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\mail.ru\how to back your files.txt
  • %HOMEPATH%\start menu\programs\icq\how to back your files.txt
Sets the 'hidden' attribute to the following files
  • %ALLUSERSPROFILE%\local\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\telegram desktop\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\total commander\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\winrar\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\.b580e5043e45a7e4d097
  • %HOMEPATH%\templates\.b580e5043e45a7e4d097
  • %HOMEPATH%\videos\.b580e5043e45a7e4d097
  • %HOMEPATH%\voip\.b580e5043e45a7e4d097
  • C:\msocache\all users\{90140000-0117-0409-1000-0000000ff1ce}-c\access.en-us\.b580e5043e45a7e4d097
  • C:\msocache\all users\{90140000-0117-0409-1000-0000000ff1ce}-c\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\startup\.b580e5043e45a7e4d097
  • C:\msocache\all users\.b580e5043e45a7e4d097
  • C:\users\.b580e5043e45a7e4d097
  • C:\msocache\.b580e5043e45a7e4d097
  • D:\$recycle.bin\s-1-5-21-1960123792-2022915161-3775307078-1001\.b580e5043e45a7e4d097
  • D:\system volume information\.b580e5043e45a7e4d097
  • D:\$recycle.bin\.b580e5043e45a7e4d097
  • <Drive name for removable media>:\.b580e5043e45a7e4d097
  • C:\.b580e5043e45a7e4d097
  • z:\system volume information\.b580e5043e45a7e4d097
  • D:\.b580e5043e45a7e4d097
  • z:\.b580e5043e45a7e4d097
  • %HOMEPATH%\.b580e5043e45a7e4d097
  • %HOMEPATH%\start menu\programs\maintenance\.b580e5043e45a7e4d097
Modifies the following files
Network activity
UDP
  • DNS ASK google.com
Miscellaneous
Creates and executes the following
  • '%WINDIR%\syswow64\wscript.exe' "%TEMP%\Pkgecycbuc.vbs"
  • '%TEMP%\msbuild.exe'
  • '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Test-Connection google.com' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Test-Connection google.com
  • '%WINDIR%\syswow64\sc.exe' delete ftnlses3
  • '%WINDIR%\syswow64\net1.exe' stop HaoZipSvc
  • '%WINDIR%\syswow64\net1.exe' stop "MSOLAP$SHOPCONTROL9"
  • '%WINDIR%\syswow64\net1.exe' stop "SQLSERVERAGENT"
  • '%WINDIR%\syswow64\net1.exe' stop UIODetect
  • '%WINDIR%\syswow64\sc.exe' delete FxService
  • '%WINDIR%\syswow64\net1.exe' stop MSSQL$
  • '%WINDIR%\syswow64\sc.exe' delete RTCATS
  • '%WINDIR%\syswow64\sc.exe' delete OracleVssWriterORCL
  • '%WINDIR%\syswow64\net1.exe' stop U8WorkerService1
  • '%WINDIR%\syswow64\sc.exe' config "SQLAgent$VEEAMSQL2012" start= disabled
  • '%WINDIR%\syswow64\sc.exe' delete "eCard-TTransServer"
  • '%WINDIR%\syswow64\sc.exe' config "SQL Server (MSSQLSERVER)" start=disabled
  • '%WINDIR%\syswow64\sc.exe' delete SQLWriter
  • '%WINDIR%\syswow64\sc.exe' config "SQLWriter" start= disabled
  • '%WINDIR%\syswow64\sc.exe' delete OracleServiceORCL
  • '%WINDIR%\syswow64\sc.exe' delete "SQL Server Reporting Services"
  • '%WINDIR%\syswow64\net1.exe' stop "igfxCUIService2.0.0.0"
  • '%WINDIR%\syswow64\net1.exe' stop VMwareHostd
  • '%WINDIR%\syswow64\net1.exe' stop "SQLBrowser"
  • '%WINDIR%\syswow64\net1.exe' stop "MSSQL$SHOPCONTROL9"
  • '%WINDIR%\syswow64\sc.exe' config MSSQL$ start=disabled
  • '%WINDIR%\syswow64\sc.exe' delete SQLSERVERAGENT
  • '%WINDIR%\syswow64\sc.exe' delete eCardMPService
  • '%WINDIR%\syswow64\sc.exe' delete aspnet_state @sc delete Redis
  • '%WINDIR%\syswow64\sc.exe' delete RtcQms
  • '%WINDIR%\syswow64\sc.exe' delete "UtilDev Web Server Pro"
  • '%WINDIR%\syswow64\sc.exe' delete EnergyDataService
  • '%WINDIR%\syswow64\sc.exe' config "MSSQL" start= disabled
  • '%WINDIR%\syswow64\sc.exe' delete SQLBrowser
  • '%WINDIR%\syswow64\net1.exe' stop U8WorkerService2
  • '%WINDIR%\syswow64\sc.exe' delete RTCAVMCU
  • '%WINDIR%\syswow64\sc.exe' delete ftnlsv3
  • '%WINDIR%\syswow64\sc.exe' delete OracleOraDb11g_home1TNSListener
  • '%WINDIR%\syswow64\sc.exe' delete REPLICA
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & a & taskkill /F /IM Veeam.Backup.Agent.ConfigurationService.exe & taskkill /F /IM Veeam.Backup.BrokerService.exe & taskkill /F /IM Veeam.Backup.CatalogDataService.exe & taskkill /...
  • '%WINDIR%\syswow64\cmd.exe' /c @echo off sc config browser sc config browser start=enabled vssadmin delete shadows /all /quiet sc stop vss sc config vss start=disabled sc stop MongoDB sc config MongoDB start=disabl...
  • '%WINDIR%\syswow64\cmd.exe' /c ""%TEMP%\Rifhxtf.bat" "
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & a & net stop "SQLSERVERAGENT" & net stop "SQLBrowser" & net stop "SQLTELEMETRY" & net stop "MsDtsServer130" & net stop "SSISTELEMETRY130" & net stop "SQLWrite" & net stop "MSSQL$V...
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & a & sc config "SQLWriter" start= disabled & sc config "MSSQL$VEEAMSQL2012" start= disabled & sc config "SQLAgent$VEEAMSQL2012" start= disabled & sc config "MSSQL" start= disabled ...
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & taskkill /F /IM U8WorkerService.exe & taskkill /F /IM UFIDA.U8.ECE.UTU.Services.exe & taskkill /F /IM UFIDA.U8.UAP.ReportService.exe & taskkill /F /IM U8AllAuthServer.exe & taskki...
  • '%WINDIR%\syswow64\sc.exe' delete UI0Detect
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & sc config MSSQLSERVER start=disabled & sc config "SQL Server (MSSQLSERVER)" start=disabled & net stop MSSQL$ & sc config MSSQL$ start=disabled & net stop SQLSERVERAGENT & sc confi...
  • '%WINDIR%\syswow64\cmd.exe' /c "@color b & sc delete MSCRMAsyncService & @sc delete REPLICA & @sc delete RTCATS & @sc delete RTCAVMCU & @sc delete RtcQms & @sc delete RTCMEETINGMCU & @sc delete RTCIMMCU & @sc delete RTCDA...
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & a & @taskkill /IM Tomcat7w.exe /F & @taskkill /IM "UFSoft.U8.OC.QuartzScheduler.exe" /F & @taskkill /IM UFSoft.U8.OC.QuartzScheduler.exe /F & @taskkill /IM Launchpad.exe /F & @tas...
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & a & @taskkill /IM DDSoftPwsTomcat9.exe /F & @taskkill /IM U8SmartClient.exe /F & @taskkill /IM U8SmartClientMonitor.exe /F & @taskkill /IM tomcat9.exe /F & @taskkill /IM SqlManage...
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & a & @sc delete "XT800Service_Personal" & @sc delete SQLSERVERAGENT & @sc delete SQLWriter & @sc delete SQLBrowser & @sc delete MSSQLFDLauncher & @sc delete MSSQLSERVER & @sc delet...
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & @sc delete "DAService_TCP" & @sc delete "eCard-TTransServer" & @sc delete eCardMPService & @sc delete EnergyDataService & @sc delete UI0Detect & @sc delete K3MobileService & @sc d...
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & @sc delete OracleOraDb11g_home1ClrAgent & @sc delete OracleOraDb11g_home1TNSListener & @sc delete OracleVssWriterORCL & @sc delete OracleServiceORCL & @sc delete aspnet_state @sc ...
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & a & net stop "MSOLAP$SHOPCONTROL9" & net stop "MSSQL$SHOPCONTROL9" & net stop "MSSQLFDLauncher$SHOPCONTROL9" & net stop "ReportServer$SHOPCONTROL9" & net stop "SQLAgent$SHOPCONTRO...
  • '%WINDIR%\syswow64\sc.exe' delete RTCMEETINGMCU
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & @taskkill /IM ReportingServicesService.exe /F & @sc delete "SQL Server Reporting Services" & @sc delete MSSQLFDLauncher & @taskkill /IM U8CEServer.exe /F & @taskkill /IM ServerNT....
  • '%WINDIR%\syswow64\cmd.exe' /c "color a & @net stop UIODetect & @net stop VMwareHostd & @net stop TeamViewer8 & @net stop VMUSBArbService & @net stop VMAuthdService & @net stop wanxiao-monitor & @net stop WebAttendServer ...
  • '%WINDIR%\syswow64\cmd.exe' /c "color a & @net stop U8WorkerService1 & @net stop U8WorkerService2 & @net stop "memcached Server" & @net stop Apache2.4 & @net stop UFIDAWebService & @net stop MSComplianceAudit & @net stop ...
  • '%WINDIR%\syswow64\sc.exe' config "MSSQL$VEEAMSQL2012" start= disabled
  • '%WINDIR%\syswow64\sc.exe' delete "DAService_TCP"
  • '%WINDIR%\syswow64\sc.exe' delete "XT800Service_Personal"
  • '%WINDIR%\syswow64\sc.exe' delete "UWS LoPriv Services"
  • '%WINDIR%\syswow64\sc.exe' delete OracleOraDb11g_home1ClrAgent
  • '%WINDIR%\syswow64\cmd.exe' /c "color a & @net stop HaoZipSvc & @net stop "igfxCUIService2.0.0.0" & @net stop Realtek11nSU & @net stop xenlite & @net stop XenSvc & @net stop Apache2.2 & @net stop "Synology Drive VSS Servi...
  • '%WINDIR%\syswow64\sc.exe' delete MSCRMAsyncService
  • '%WINDIR%\syswow64\cmd.exe' /c "color b & @sc delete "UWS LoPriv Services" & @sc delete ftnlsv3 & @sc delete ftnlses3 & @sc delete FxService & @sc delete "UtilDev Web Server Pro" & @sc delete ftusbrdwks & @sc delete ftusb...
  • '%WINDIR%\syswow64\cmd.exe' /c "color e & @taskkill /IM VBoxSDS.exe /F & @taskkill /IM mysqld.exe /F & @taskkill /IM TeamViewer_Service.exe /F & @taskkill /IM TeamViewer.exe /F & @taskkill /IM CasLicenceServer.exe /F & @t...
  • '%WINDIR%\syswow64\cmd.exe' /c "color e & @taskkill /IM BackupExec.exe /F & @taskkill /IM Att.exe /F & @taskkill /IM mdm.exe /F & @taskkill /IM BackupExecManagementService.exe /F & @taskkill /IM bengine.exe /F & @taskkill...
  • '%WINDIR%\syswow64\cmd.exe' /c "color e & @taskkill /IM pg_ctl.exe /F & @taskkill /IM rcrelay.exe /F & @taskkill /IM SogouImeBroker.exe /F & @taskkill /IM CCenter.exe /F & @taskkill /IM ScanFrm.exe /F & @taskkill /IM d_ma...
  • '%WINDIR%\syswow64\cmd.exe' /c "color e & @taskkill /IM ThunderPlatform.exe /F & @taskkill /IM iexplore.exe /F & @taskkill /IM vm-agent.exe /F & @taskkill /IM vm-agent-daemon.exe /F & @taskkill /IM eSightService.exe /F & ...
  • '%WINDIR%\syswow64\cmd.exe' /c "color e & @taskkill /IM sqlservr.exe /F & @taskkill /IM httpd.exe /F & @taskkill /IM java.exe /F & @taskkill /IM fdhost.exe /F & @taskkill /IM fdlauncher.exe /F & @taskkill /IM Veeam.Backup...
  • '%WINDIR%\syswow64\sc.exe' config MSSQLSERVER start=disabled
  • '%WINDIR%\syswow64\sc.exe' delete MSSQLFDLauncher

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.
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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);
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    • Switch off your device and turn it on as normal.

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