Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'UDP Subsystem' = '%ProgramFiles(x86)%\UDP Subsystem\udpss.exe'
Malicious functions
Creates and executes the following
- '' (downloaded from the Internet)
Creates and executes the following (exploit)
- '%APPDATA%\vbc.exe'
Injects code into
the following system processes:
- %WINDIR%\microsoft.net\framework\v4.0.30319\regasm.exe
Modifies file system
Creates the following files
- %APPDATA%\vbc.exe
- %TEMP%\csc7a5315ed71c243cdbed610bad159f216.tmp
- %TEMP%\idf2gqjc.out
- %TEMP%\idf2gqjc.cmdline
- %TEMP%\idf2gqjc.0.cs
- %TEMP%\a3zx5gk1.dll
- %TEMP%\resa6d.tmp
- %TEMP%\cscaa48ef0e585340e09c458a68442096.tmp
- %TEMP%\a3zx5gk1.out
- %TEMP%\a3zx5gk1.cmdline
- %TEMP%\a3zx5gk1.0.cs
- %ProgramFiles(x86)%\udp subsystem\udpss.exe
- %APPDATA%\36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee\run.dat
- %TEMP%\res1181.tmp
- %TEMP%\25tnggvy.dll
- %TEMP%\csc9e30a450ed3848e0a656f6df99cec12d.tmp
- %TEMP%\25tnggvy.out
- %TEMP%\25tnggvy.cmdline
- %TEMP%\25tnggvy.0.cs
- %TEMP%\mrpayzjs.dll
- %TEMP%\resf464.tmp
- %TEMP%\csc1d72adc37cd40348de7b6582472495d.tmp
- %TEMP%\mrpayzjs.out
- %TEMP%\mrpayzjs.cmdline
- %TEMP%\mrpayzjs.0.cs
- %TEMP%\ixp000.tmp\khsydqnpoppoabtxma5
- %TEMP%\ixp000.tmp\khsydqnpoppoabtxma5.exe
- %TEMP%\resfbf6.tmp
- %TEMP%\idf2gqjc.dll
Deletes the following files
- %TEMP%\resf464.tmp
- %TEMP%\idf2gqjc.0.cs
- %TEMP%\idf2gqjc.dll
- %TEMP%\idf2gqjc.cmdline
- %TEMP%\idf2gqjc.out
- %TEMP%\csc7a5315ed71c243cdbed610bad159f216.tmp
- %TEMP%\res1181.tmp
- %TEMP%\a3zx5gk1.out
- %TEMP%\a3zx5gk1.0.cs
- %TEMP%\a3zx5gk1.dll
- %TEMP%\a3zx5gk1.cmdline
- %TEMP%\cscaa48ef0e585340e09c458a68442096.tmp
- %TEMP%\resa6d.tmp
- %TEMP%\25tnggvy.dll
- %TEMP%\25tnggvy.0.cs
- %TEMP%\25tnggvy.out
- %TEMP%\25tnggvy.cmdline
- %TEMP%\csc9e30a450ed3848e0a656f6df99cec12d.tmp
- %TEMP%\resfbf6.tmp
- %TEMP%\mrpayzjs.cmdline
- %TEMP%\mrpayzjs.0.cs
- %TEMP%\mrpayzjs.dll
- %TEMP%\mrpayzjs.out
- %TEMP%\csc1d72adc37cd40348de7b6582472495d.tmp
- %TEMP%\ixp000.tmp\khsydqnpoppoabtxma5
- %TEMP%\ixp000.tmp\khsydqnpoppoabtxma5.exe
Network activity
Connects to
- '18#.#44.30.251':83
- 'na####44.ddns.net':83
TCP
HTTP GET requests
- http://ie####sulting.org/major.exe
UDP
- DNS ASK ie####sulting.org
- DNS ASK na####44.ddns.net
Miscellaneous
Creates and executes the following
- '%TEMP%\ixp000.tmp\khsydqnpoppoabtxma5.exe'
- '%TEMP%\ixp000.tmp\khsydqnpoppoabtxma5.exe' ' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\mrpayzjs.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESF464.tmp" "%TEMP%\CSC1D72ADC37CD40348DE7B6582472495D.TMP"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\25tnggvy.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESFBF6.tmp" "%TEMP%\CSC9E30A450ED3848E0A656F6DF99CEC12D.TMP"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\a3zx5gk1.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESA6D.tmp" "%TEMP%\CSCAA48EF0E585340E09C458A68442096.TMP"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\idf2gqjc.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES1181.tmp" "%TEMP%\CSC7A5315ED71C243CDBED610BAD159F216.TMP"' (with hidden window)
Executes the following
- '%CommonProgramFiles%\microsoft shared\equation\eqnedt32.exe' -Embedding
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\mrpayzjs.cmdline"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESF464.tmp" "%TEMP%\CSC1D72ADC37CD40348DE7B6582472495D.TMP"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\25tnggvy.cmdline"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESFBF6.tmp" "%TEMP%\CSC9E30A450ED3848E0A656F6DF99CEC12D.TMP"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\regasm.exe'
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\a3zx5gk1.cmdline"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESA6D.tmp" "%TEMP%\CSCAA48EF0E585340E09C458A68442096.TMP"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\idf2gqjc.cmdline"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES1181.tmp" "%TEMP%\CSC7A5315ED71C243CDBED610BAD159F216.TMP"
