Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,,%PROGRAM_FILES%\microsoft\watermark.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\RECYCLER\S-4-6-78-7550137860-4636734705-565032534-3656\dAmVUQWk.cpl
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\RECYCLER\S-4-6-78-7550137860-4636734705-565032534-3656\FuuAorrO.exe
Malicious functions:
Creates and executes the following:
- %PROGRAM_FILES%\Microsoft\WaterMark.exe
- <Auxiliary element>
Executes the following:
- <SYSTEM32>\svchost.exe
Injects code into
the following system processes:
- <SYSTEM32>\spoolsv.exe
- <SYSTEM32>\svchost.exe
- %WINDIR%\Explorer.EXE
- <SYSTEM32>\alg.exe
- <SYSTEM32>\ctfmon.exe
- <SYSTEM32>\lsass.exe
- <SYSTEM32>\smss.exe
- System
- <SYSTEM32>\csrss.exe
- <SYSTEM32>\services.exe
- <SYSTEM32>\winlogon.exe
a large number of user processes.
Modifies file system :
Creates the following files:
- <SYSTEM32>\dmlconf.dat
- %PROGRAM_FILES%\Microsoft\WaterMark.exe
- <Auxiliary element>
Network activity:
Connects to:
- 'ea###ybstr.com':443
- '74.##5.232.51':80
- 'fg###career.com':443
UDP:
- DNS ASK ea###ybstr.com
- DNS ASK google.com
- DNS ASK fg###career.com
