Saturday, June 23, 2012

Using command prompt "attrib" to check for Viruses or Malware


To start attrib
  1. Go to Start Menu > Run
  2. Type cmd (cmd stands for command prompt)
  3. Press Enter key
The Command Prompt will appear showing us where is our location in the directory.

Using attrib

To use attrib
  1. Go to the root directory first by typing cd\(because this is always the target of Malware / Virus)
2. Type attrib and press Enter key

In this example, I have two files that are considered as malware.
Note that there are two files which I outlined in red (SilentSoftech.exe and autorun.inf). Since you cannot see this file nor delete it (because the attributes that was set on these files are +s +h +r)
  1. +s - meaning it is a system file (which also means that you cannot delete it just by using the delete command)
  2. +h - means it is hidden (so you cannot delete it)

  3. +r - means it is a read only file ( which also means that you cannot delete it just by using the delete command)

Now we need to set the attributes of autorun.inf to -s -h -r (so that we can manually delete it)
  1. Type attrib -s -h -r autorun.inf ( be sure to include -s -h -r because you cannot change the attributes using only -s or -h or -r alone)
  2. Type attrib again to check if your changes have been commited
  3. If the autorun.inf file has no more attributes, you can now delete it by typingdel autorun.inf
  4. Since SilentSoftech.exe is a malware you can remove its attributes by doing step 1 and step 3(just change the filename) ex. attrib -s -h -r silentsoftech.exe



THANKYOU...

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