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Trojan.Siggen10.37163

Added to the Dr.Web virus database: 2020-10-13

Virus description added:

Technical Information

To ensure autorun and distribution
Creates or modifies the following files
  • %APPDATA%\microsoft\windows\start menu\programs\videolan\ddvlc.exe
Malicious functions
Injects code into
the following user processes:
  • ds1.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\login data
  • %APPDATA%\opera software\opera stable\login data
  • %LOCALAPPDATA%\google\chrome\user data\default\cookies
  • %LOCALAPPDATA%\google\chrome\user data\default\web data
Modifies file system
Creates the following files
  • %TEMP%\5396c946\api-ms-win-core-console-l1-1-0.dll
  • %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
  • %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
  • %TEMP%\1059106546932278921814.tmp
  • %TEMP%\10590754864356794443548.tmp
  • %TEMP%\5396c946\vcruntime140.dll
  • %TEMP%\5396c946\ucrtbase.dll
  • %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
  • %TEMP%\5396c946\softokn3.dll
  • %TEMP%\5396c946\nss3.dll
  • %TEMP%\5396c946\msvcp140.dll
  • %TEMP%\5396c946\mozglue.dll
  • %TEMP%\5396c946\freebl3.dll
  • %TEMP%\5396c946\api-ms-win-crt-utility-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-time-l1-1-0.dll
  • %TEMP%\5396c946\nssdbm3.dll
  • %LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
  • %TEMP%\10613376044224689527818.tmp
  • %TEMP%\10613528552281768784949.tmp
  • %TEMP%\ds1.exe
  • %TEMP%\ds2.exe
  • %TEMP%\rc.exe
  • %TEMP%\ac.exe
  • %TEMP%\10615558830473924897186.tmp-shm
  • %TEMP%\10615558830473924897186.tmp
  • %TEMP%\10615557764336743727549.tmp
  • %TEMP%\10615402933243552709471.tmp
  • %TEMP%\10615247828870020453199.tmp
  • %TEMP%\10615083666985590649037.tmp
  • %TEMP%\10615088271540794276245.tmp
  • %TEMP%\10614936891573978955904.tmp
  • %TEMP%\10614938063793729763700.tmp
  • %TEMP%\10614463887848593721467.tmp-shm
  • %TEMP%\10614463887848593721467.tmp
  • %TEMP%\5396c946\api-ms-win-crt-string-l1-1-0.dll
  • %WINDIR%\temp\o30xl2sj.exe
  • %TEMP%\5396c946\api-ms-win-crt-stdio-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-process-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-processenvironment-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-namedpipe-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-memory-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-localization-l1-2-0.dll
  • %TEMP%\5396c946\api-ms-win-core-libraryloader-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-interlocked-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-processthreads-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-heap-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-file-l2-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-file-l1-2-0.dll
  • %TEMP%\5396c946\api-ms-win-core-file-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-errorhandling-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-debug-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-datetime-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-handle-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-processthreads-l1-1-1.dll
  • %TEMP%\5396c946\api-ms-win-core-profile-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-rtlsupport-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-private-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-multibyte-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-math-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-locale-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-heap-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-filesystem-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-environment-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-convert-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-conio-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-util-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-timezone-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-sysinfo-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-synch-l1-2-0.dll
  • %TEMP%\5396c946\api-ms-win-core-synch-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-string-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-runtime-l1-1-0.dll
  • %WINDIR%\temp\p0dktjqt.inf
Deletes the following files
  • %TEMP%\10590754864356794443548.tmp
  • %TEMP%\5396c946\api-ms-win-core-rtlsupport-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-string-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-synch-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-synch-l1-2-0.dll
  • %TEMP%\5396c946\api-ms-win-core-sysinfo-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-timezone-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-util-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-conio-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-convert-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-environment-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-filesystem-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-heap-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-locale-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-multibyte-l1-1-0.dll
  • %TEMP%\5396c946\ucrtbase.dll
  • %TEMP%\5396c946\api-ms-win-crt-private-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-process-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-runtime-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-stdio-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-string-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-time-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-utility-l1-1-0.dll
  • %TEMP%\5396c946\freebl3.dll
  • %TEMP%\5396c946\mozglue.dll
  • %TEMP%\5396c946\msvcp140.dll
  • %TEMP%\5396c946\nss3.dll
  • %TEMP%\5396c946\nssdbm3.dll
  • %TEMP%\5396c946\softokn3.dll
  • %TEMP%\5396c946\api-ms-win-core-profile-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-crt-math-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-processthreads-l1-1-1.dll
  • %TEMP%\10615558830473924897186.tmp
  • %TEMP%\1059106546932278921814.tmp
  • %TEMP%\10613376044224689527818.tmp
  • %TEMP%\10613528552281768784949.tmp
  • %TEMP%\10614463887848593721467.tmp-shm
  • %TEMP%\10614463887848593721467.tmp
  • %TEMP%\10614938063793729763700.tmp
  • %TEMP%\10614936891573978955904.tmp
  • %TEMP%\10615088271540794276245.tmp
  • %TEMP%\10615083666985590649037.tmp
  • %TEMP%\10615247828870020453199.tmp
  • %TEMP%\10615402933243552709471.tmp
  • %TEMP%\10615557764336743727549.tmp
  • %TEMP%\10615558830473924897186.tmp-shm
  • %TEMP%\5396c946\api-ms-win-core-console-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-processenvironment-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-datetime-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-debug-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-errorhandling-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-file-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-file-l1-2-0.dll
  • %TEMP%\5396c946\api-ms-win-core-file-l2-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-handle-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-heap-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-interlocked-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-libraryloader-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-localization-l1-2-0.dll
  • %TEMP%\5396c946\api-ms-win-core-memory-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-namedpipe-l1-1-0.dll
  • %TEMP%\5396c946\api-ms-win-core-processthreads-l1-1-0.dll
  • %TEMP%\5396c946\vcruntime140.dll
Deletes itself.
Network activity
Connects to
  • 'ma###p.ac.ug':6970
TCP
HTTP GET requests
  • http://mo####rgio.ac.ug/ac.exe
  • http://mo####rgio.ac.ug/rc.exe
  • http://mo####rgio.ac.ug/ds2.exe
  • http://mo####rgio.ac.ug/ds1.exe
  • http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
HTTP POST requests
  • http://mo####rgio.ac.ug/index.php
  • 'cd#.##scordapp.com':443
    • UDP
    • DNS ASK mo####rgio.ac.ug
    • DNS ASK ma###p.ac.ug
    • DNS ASK ma###palgo.ug
    • DNS ASK di##ord.com
    • DNS ASK cd#.##scordapp.com
    • DNS ASK microsoft.com
    Miscellaneous
    Creates and executes the following
    • '%TEMP%\ac.exe'
    • '%TEMP%\rc.exe'
    • '%TEMP%\ds2.exe'
    • '%TEMP%\ds1.exe'
    • '%WINDIR%\syswow64\cmd.exe' /c <SYSTEM32>\timeout.exe 3 & del "<File name>.exe"' (with hidden window)
    Executes the following
    • '%WINDIR%\syswow64\cmd.exe' /c <SYSTEM32>\timeout.exe 3 & del "<File name>.exe"
    • '%WINDIR%\syswow64\timeout.exe' 3
    • '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Add-MpPreference -ExclusionPath '"%APPDATA%\Microsoft\Windows\Start Menu\Programs\VideoLAN\ddvlc.exe"'
    • '%WINDIR%\syswow64\windowspowershell\v1.0\powershell.exe' Get-MpPreference -verbose
    • '%WINDIR%\syswow64\cmstp.exe' /au %WINDIR%\temp\p0dktjqt.inf

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