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"
