Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'testNjratlime.exe' = '"%WINDIR%\testNjratlime.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'testNjratlime.exe' = '"%WINDIR%\testNjratlime.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\testNjratlime.exe
Creates the following files on removable media:
- <Drive name for removable media>:\testNjratlime.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Executes the following:
- '<SYSTEM32>\taskkill.exe' /F /IM cmd.exe
- '<SYSTEM32>\taskkill.exe' /F /IM wscript.exe
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\cmd.exe
Modifies file system:
Creates the following files:
- %WINDIR%\testNjratlime.exe
- <SYSTEM32>\ctfmon.exe.new
Sets the 'hidden' attribute to the following files:
- %WINDIR%\testNjratlime.exe
- <Drive name for removable media>:\testNjratlime.exe
Moves the following system files:
- from <SYSTEM32>\ctfmon.exe to %TEMP%\40323
Moves the following files:
- from %HOMEPATH%\Start Menu\Programs\Startup\desktop.ini to %TEMP%\78204
- from %HOMEPATH%\Start Menu\Programs\Startup\Shortcut to startup_local.lnk to %TEMP%\46711
- from %HOMEPATH%\Start Menu\Programs\Startup\Shortcut to startup_local.lnk to %TEMP%\23052
- from <STUBS_DIR>\ecmd\ecmd.exe to %TEMP%\55068
- from %HOMEPATH%\Start Menu\Programs\Startup\desktop.ini to %TEMP%\73214
Network activity:
Connects to:
- 'gi###8.ddns.net':4444
UDP:
- DNS ASK gi###8.ddns.net
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: 'AngarCl'
- ClassName: '' WindowName: ''
Creates and executes the following:
- '%WINDIR%\testNjratlime.exe'
Executes the following:
- '<SYSTEM32>\schtasks.exe' /create /tn NYAN /tr "<Full path to file>" /sc minute /mo 1
- '<SYSTEM32>\schtasks.exe' /create /tn NYANP /tr "%WINDIR%\testNjratlime.exe" /sc minute /mo 5
- '<SYSTEM32>\schtasks.exe' /create /tn NYAN /tr "%WINDIR%\testNjratlime.exe" /sc minute /mo 1
- '<SYSTEM32>\schtasks.exe' /Delete /tn NYANP /F
- '<SYSTEM32>\schtasks.exe' /create /tn NYANP /tr "<Full path to file>" /sc minute /mo 5
- '<SYSTEM32>\schtasks.exe' /Delete /tn NYAN /F
