Win32.HLLW.Autoruner2.30962
Added to the Dr.Web virus database:
2017-12-23
Virus description added:
2017-12-23
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'css.exe' = '"%TEMP%\css.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'css.exe' = '"%TEMP%\css.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\css.exe
Creates the following files on removable media:
- <Drive name for removable media>:\css.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
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:
Modifies file system:
Creates the following files:
- %TEMP%\css.exe
- <SYSTEM32>\ctfmon.exe.new
Sets the 'hidden' attribute to the following files:
- %TEMP%\css.exe
- <Drive name for removable media>:\css.exe
Moves the following system files:
- from <SYSTEM32>\ctfmon.exe to %TEMP%\29048
Moves the following files:
- from %HOMEPATH%\Start Menu\Programs\Startup\desktop.ini to %TEMP%\29940
- from %HOMEPATH%\Start Menu\Programs\Startup\Shortcut to startup_local.lnk to %TEMP%\82634
- from %HOMEPATH%\Start Menu\Programs\Startup\Shortcut to startup_local.lnk to %TEMP%\80697
- from <STUBS_DIR>\ecmd\ecmd.exe to %TEMP%\59570
- from %HOMEPATH%\Start Menu\Programs\Startup\desktop.ini to %TEMP%\27392
Network activity:
Connects to:
- 'te#######.seeallofthatstuff.ml':1605
UDP:
- DNS ASK te#######.seeallofthatstuff.ml
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: ''
- ClassName: '' WindowName: 'AngarCl'
Creates and executes the following:
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 "%TEMP%\css.exe" /sc minute /mo 5
- '<SYSTEM32>\schtasks.exe' /create /tn NYAN /tr "%TEMP%\css.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
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