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Win32.HLLW.Autoruner2.40656
Added to the Dr.Web virus database:
2018-06-21
Virus description added:
2018-06-21
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'svhost.exe' = '"%TEMP%\svhost.exe" ..'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'svhost.exe' = '"%TEMP%\svhost.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\svhost.exe
Creates the following files on removable media:
<Drive name for removable media>:\svhost.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 wscript.exe
'<SYSTEM32>\taskkill.exe' /F /IM cmd.exe
Terminates or attempts to terminate
the following system processes:
Modifies file system:
Creates the following files:
<SYSTEM32>\ctfmon.exe.new
%TEMP%\svhost.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\svhost.exe
%TEMP%\svhost.exe
Moves the following system files:
from <SYSTEM32>\ctfmon.exe to %TEMP%\68337
Moves the following files:
from <STUBS_DIR>\ecmd\ecmd.exe to %TEMP%\50190
from %HOMEPATH%\Start Menu\Programs\Startup\desktop.ini to %TEMP%\36843
from %HOMEPATH%\Start Menu\Programs\Startup\Shortcut to startup_local.lnk to %TEMP%\10934
from %HOMEPATH%\Start Menu\Programs\Startup\desktop.ini to %TEMP%\40699
from %HOMEPATH%\Start Menu\Programs\Startup\Shortcut to startup_local.lnk to %TEMP%\76116
Miscellaneous:
Searches for the following windows:
ClassName: '' WindowName: ''
ClassName: '' WindowName: 'AngarCl'
Creates and executes the following:
Executes the following:
'<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
'<SYSTEM32>\schtasks.exe' /create /tn NYAN /tr "<Full path to file>" /sc minute /mo 1
'<SYSTEM32>\schtasks.exe' /create /tn NYANP /tr "%TEMP%\svhost.exe" /sc minute /mo 5
'<SYSTEM32>\schtasks.exe' /create /tn NYAN /tr "%TEMP%\svhost.exe" /sc minute /mo 1
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