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Exploit.Siggen3.7051

Added to the Dr.Web virus database: 2021-01-04

Virus description added:

Technical Information

To ensure autorun and distribution
Creates or modifies the following files
  • <SYSTEM32>\tasks\updates\pdkgygltssxm
Malicious functions
Creates and executes the following
  • '' (downloaded from the Internet)
Creates and executes the following (exploit)
  • 'C:\users\public\vbc.exe'
Injects code into
the following user processes:
  • vbc.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
  • C:\users\public\vbc.exe
  • %TEMP%\79394592\ucrtbase.dll
  • %TEMP%\79394592\softokn3.dll
  • %TEMP%\79394592\nssdbm3.dll
  • %TEMP%\79394592\nss3.dll
  • %TEMP%\79394592\msvcp140.dll
  • %TEMP%\113918140848977432114.tmp
  • %TEMP%\79394592\mozglue.dll
  • %TEMP%\79394592\api-ms-win-crt-utility-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-time-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-string-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-stdio-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-runtime-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-process-l1-1-0.dll
  • %TEMP%\79394592\freebl3.dll
  • %TEMP%\79394592\api-ms-win-core-sysinfo-l1-1-0.dll
  • %TEMP%\11392593567271264408.tmp
  • %TEMP%\11413969152371165212464.tmp
  • %TEMP%\1141381486583845670775.tmp
  • %TEMP%\1141350661404634004104.tmp
  • %TEMP%\1141350551548178845323.tmp
  • %TEMP%\1141287258935056574607.tmp
  • %TEMP%\11412729912515561738943.tmp
  • %TEMP%\79394592\api-ms-win-crt-private-l1-1-0.dll
  • %TEMP%\79394592\vcruntime140.dll
  • %TEMP%\11411788933895541118098.tmp
  • %TEMP%\1141038749020178255267.tmp
  • %TEMP%\1141022882955269449348.tmp
  • %LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
  • %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
  • %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
  • %TEMP%\11411788933895541118098.tmp-shm
  • %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
  • %TEMP%\79394592\api-ms-win-crt-multibyte-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-math-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-locale-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-file-l1-1-0.dll
  • %APPDATA%\pdkgygltssxm.exe
  • %TEMP%\tmp44cc.tmp
  • %TEMP%\79394592\api-ms-win-core-console-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-datetime-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-debug-l1-1-0.dll
  • %TEMP%\1141428308452474667940.tmp
  • %TEMP%\79394592\api-ms-win-core-errorhandling-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-memory-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-file-l2-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-handle-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-heap-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-interlocked-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-libraryloader-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-file-l1-2-0.dll
  • %TEMP%\114125663772904246188.tmp
  • %TEMP%\79394592\api-ms-win-core-namedpipe-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-processthreads-l1-1-1.dll
  • %TEMP%\79394592\api-ms-win-core-processenvironment-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-heap-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-filesystem-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-environment-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-convert-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-conio-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-processthreads-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-util-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-localization-l1-2-0.dll
  • %TEMP%\79394592\api-ms-win-core-synch-l1-2-0.dll
  • %TEMP%\79394592\api-ms-win-core-synch-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-string-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-rtlsupport-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-profile-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-timezone-l1-1-0.dll
  • %TEMP%\1141428308452474667940.tmp-shm
Deletes the following files
  • %TEMP%\tmp44cc.tmp
  • %TEMP%\79394592\api-ms-win-core-string-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-synch-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-synch-l1-2-0.dll
  • %TEMP%\79394592\api-ms-win-core-sysinfo-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-timezone-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-util-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-conio-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-convert-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-environment-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-filesystem-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-heap-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-locale-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-profile-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-rtlsupport-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-math-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-process-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-runtime-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-stdio-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-string-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-time-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-utility-l1-1-0.dll
  • %TEMP%\79394592\freebl3.dll
  • %TEMP%\79394592\mozglue.dll
  • %TEMP%\79394592\msvcp140.dll
  • %TEMP%\79394592\nss3.dll
  • %TEMP%\79394592\nssdbm3.dll
  • %TEMP%\79394592\softokn3.dll
  • %TEMP%\79394592\api-ms-win-crt-multibyte-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-crt-private-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-processthreads-l1-1-1.dll
  • %TEMP%\79394592\api-ms-win-core-processthreads-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-processenvironment-l1-1-0.dll
  • %TEMP%\11392593567271264408.tmp
  • %TEMP%\1141022882955269449348.tmp
  • %TEMP%\1141038749020178255267.tmp
  • %TEMP%\11411788933895541118098.tmp-shm
  • %TEMP%\11411788933895541118098.tmp
  • %TEMP%\114125663772904246188.tmp
  • %TEMP%\11412729912515561738943.tmp
  • %TEMP%\1141287258935056574607.tmp
  • %TEMP%\1141350551548178845323.tmp
  • %TEMP%\1141350661404634004104.tmp
  • %TEMP%\1141381486583845670775.tmp
  • %TEMP%\11413969152371165212464.tmp
  • %TEMP%\1141428308452474667940.tmp-shm
  • %TEMP%\113918140848977432114.tmp
  • %TEMP%\1141428308452474667940.tmp
  • %TEMP%\79394592\api-ms-win-core-datetime-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-debug-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-errorhandling-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-file-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-file-l1-2-0.dll
  • %TEMP%\79394592\api-ms-win-core-file-l2-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-handle-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-heap-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-interlocked-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-libraryloader-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-localization-l1-2-0.dll
  • %TEMP%\79394592\api-ms-win-core-memory-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-namedpipe-l1-1-0.dll
  • %TEMP%\79394592\api-ms-win-core-console-l1-1-0.dll
  • %TEMP%\79394592\ucrtbase.dll
  • %TEMP%\79394592\vcruntime140.dll
Network activity
TCP
HTTP GET requests
  • http://sn#######ikonlinedel.dns.army/kaladoc/vbc.exe
HTTP POST requests
  • http://wj####.myzen.co.uk/azo2/PL341/index.php
UDP
  • DNS ASK sn#######ikonlinedel.dns.army
  • DNS ASK wj####.myzen.co.uk
Miscellaneous
Creates and executes the following
  • '%WINDIR%\syswow64\schtasks.exe' /Create /TN "Updates\PdkGyGlTSsXm" /XML "%TEMP%\tmp44CC.tmp"' (with hidden window)
Executes the following
  • '%CommonProgramFiles%\microsoft shared\equation\eqnedt32.exe' -Embedding
  • '%WINDIR%\syswow64\schtasks.exe' /Create /TN "Updates\PdkGyGlTSsXm" /XML "%TEMP%\tmp44CC.tmp"

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    • 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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