Remove Chast. Description and removal instructions

Title: Chast
Type: Backdoors	Severity scale: (77 / 100)

Chast is a backdoor that provides the attacker with unauthorized remote access to a compromised computer. The intruder can control the infected system and steal user sensitive data. Chast also records user keystrokes, captures online chat conversations and collects system information. It may install a trojan able to hide Chast running processes. The backdoor automatically runs on every Windows startup.

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Chast properties:
• Allows remote user connection
• Logs keystrokes
• Connects itself to the internet
• Hides from the user
• Stays resident in background

Automatic Chast removal:

remover for Chast

Chast manual removal:

Kill processes:
win16svc.exe

HELP:
how to kill malicious processes

Delete registry values:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system32check

HELP:
how to remove registry entries

Delete files:
win16svc.exe, isnsys.dll, isnsys32zx.dll

HELP:
how to remove harmful files

Delete directories:
C:\Windows\System\isndata
C:\Windows\System32\isndata
C:\Winnt\System32\isndata
Misc:
The backdoor creates files with random names.

Most Chast files reside in C:\Windows or C:\Winnt directory.

Other programs to remove Chast:

• SUPERAntiSpyware - Review - Download
• CounterSpy - Review - Download
• Windows Defender - Review - Download

Information added: 23/11/05
Information updated: 23/11/05

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