Win32.HLLW.Autoruner.55942

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe] 'Debugger' = 'avgguard.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = 'ctfmon.exe'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\RECYCLER\S-1-6-20-3802918391-3809376219-530039213-2313\flsched.exe
<Drive name for removable media>:\RECYCLER\S-1-6-20-3802918391-3809376219-530039213-2313\Desktop.ini

Malicious functions:

To complicate detection of its presence in the operating system,

forces the system hide from view:

blocks the following features:

Creates and executes the following:

Executes the following:

Injects code into

the following system processes:

Terminates or attempts to terminate

the following user processes:

Searches for windows to

detect analytical utilities:

ClassName: '' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'PROCMON_WINDOW_CLASS' WindowName: ''
ClassName: '' WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'RegmonClass' WindowName: ''
ClassName: '' WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'GBDYLLO' WindowName: ''
ClassName: 'OLLYDBG' WindowName: ''
ClassName: 'FilemonClass' WindowName: ''
ClassName: 'pediy06' WindowName: ''

Hides the following processes:

Modifies file system :

Creates the following files:

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\RECYCLER\S-1-6-20-3802918391-3809376219-530039213-2313\flsched.exe
<SYSTEM32>\avgguard.exe

Deletes itself.

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: