Win32.HLLW.Autoruner2.19170

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /m'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /e'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /w'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /v'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /c'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /t'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /a'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /l'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /f'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /n'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /j'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /p'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /d'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /r'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'caoesik' = '%HOMEPATH%\caoesik.exe /b'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\caoesik.exe
<Drive name for removable media>:\Secret.exe
<Drive name for removable media>:\Sexy.exe
<Drive name for removable media>:\RCX1.tmp
<Drive name for removable media>:\Porn.exe
<Drive name for removable media>:\RCX2.tmp
<Drive name for removable media>:\RCX3.tmp
<Drive name for removable media>:\Passwords.exe
<Drive name for removable media>:\RCX4.tmp
<Drive name for removable media>:\RCX5.tmp
<Drive name for removable media>:\RCX6.tmp

Malicious functions:

To complicate detection of its presence in the operating system,

forces the system hide from view:

hidden files

Modifies file system:

Creates the following files:

%HOMEPATH%\caoesik.exe

Sets the 'hidden' attribute to the following files:

%HOMEPATH%\caoesik.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\caoesik.exe

Deletes the following files:

<Drive name for removable media>:\Sexy.exe
<Drive name for removable media>:\Porn.exe
<Drive name for removable media>:\Passwords.exe

Substitutes the following files:

<Drive name for removable media>:\Sexy.exe
<Drive name for removable media>:\Porn.exe
<Drive name for removable media>:\Passwords.exe

Network activity:

Connects to:

'ns#.##siczipz.com':8003

UDP:

DNS ASK ns#.##siczipz.com

Miscellaneous:

Creates and executes the following:

'%HOMEPATH%\caoesik.exe'

Technologies

Terminology

Training and education

Myths

Technical Information