Remove Ryknos.b. Description and removal instructions

Title: Ryknos.b
Type: Backdoors	Severity scale: (68 / 100)

Ryknos.b is an IRC-controlled backdoor that provides the attacker with unauthorized remote access to a compromised computer. The intruder can download and execute arbitrary files, retrieve system and network information, send messages to specified remote hosts. Ryknos.b uses the infamous First4DRM rootkit to hide itself in the system. It is able to bypass Windows Firewall. Ryknos.b automatically runs on every Windows startup.

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Ryknos.b properties:
• Allows remote user connection
• Connects itself to the internet
• Hides from the user
• Stays resident in background

Automatic Ryknos.b removal:

remover for Ryknos.b

Ryknos.b manual removal:

Kill processes:
$sys$xp.exe

HELP:
how to kill malicious processes

Delete registry values:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\$sys$cmp=$sys$xp.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\$sys$cmp=$sys$xp.exe

HELP:
how to remove registry entries

Delete files:
$sys$xp.exe

HELP:
how to remove harmful files

Misc:
The threat can infect any system except for those, where First4DRM is already installed from Sony BMG content-protected music CDs.

The $sys$xp.exe file can be found in default system directory, which is one of the following: C:\Windows\System, C:\Windows\System32, C:\Winnt\System32.

Other programs to remove Ryknos.b:

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

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

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