2 of 2 new comp virus....

[Guest guest]

Backdoor.IRC.Jemput

Discovered on: September 12, 2003

Last Updated on: September 12, 2003 11:37:56 PM

Backdoor.IRC.Jemput is a Backdoor Trojan Horse that installs an mIRC

client, with backdoor capabilities, which gives the Trojan's author

unlimited access to a computer.

Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me,

Windows NT, Windows Server 2003, Windows XP

Systems Not Affected: DOS, Linux, Macintosh, Microsoft IIS, OS/2,

UNIX, Windows 3.x

Virus Definitions (Intelligent Updater) *

September 12, 2003

Virus Definitions (LiveUpdate™) **

September 17, 2003

*

Intelligent Updater definitions are released daily, but require

manual download and installation.

Click here to download manually.

**

LiveUpdate virus definitions are usually released every Wednesday.

Click here for instructions on using LiveUpdate.

Wild:

Number of infections: 0 - 49

Number of sites: 0 - 2

Geographical distribution: Low

Threat containment: Easy

Removal: Easy

Threat Metrics

Wild:

Low

Damage:

Low

Distribution:

Low

When Backdoor.IRC.Jemput is executed, it does the following:

Creates the following files, some of which are not malicious:

antivirus cleaner.ico

cakap.cnf

channel.cnf

danautoba.cnf

hide.ico

http.cnf

icon.pif

jempu.ini

jemput.pif

mira.pif

mirc.exe

mirc.ini

mirc.sys

norton.pif

remote.ini

symantecsys.pif

systemdll.pif

FONTS\ident.txt

FONTS\Nick.txt

FONTS\tambah.txt

FONTS\username.txt

in the C:\Windows\Leukosit folder, which the Trojan creates if it

does not exist.

Executes C:\Windows\Leukosit\Mirc.exe, which will connect to a remote

server to await further instruction from the Trojan's author.

When Backdoor.IRC.Jemput runs, there will be two icons visible in the

system tray:

ku2 -X- Virus Checker

ku2 -X- Virus Scanner Cleaner V3.4

Symantec Security Response encourages all users and administrators to

adhere to the following basic security " best practices " :

Turn off and remove unneeded services. By default, many operating

systems install auxiliary services that are not critical, such as an

FTP server, telnet, and a Web server. These services are avenues of

attack. If they are removed, blended threats have less avenues of

attack and you have fewer services to maintain through patch updates.

If a blended threat exploits one or more network services, disable,

or block access to, those services until a patch is applied.

Always keep your patch levels up-to-date, especially on computers

that host public services and are accessible through the firewall,

such as HTTP, FTP, mail, and DNS services.

Enforce a password policy. Complex passwords make it difficult to

crack password files on compromised computers. This helps to prevent

or limit damage when a computer is compromised.

Configure your email server to block or remove email that contains

file attachments that are commonly used to spread viruses, such

as .vbs, .bat, .exe, .pif and .scr files.

Isolate infected computers quickly to prevent further compromising

your organization. Perform a forensic analysis and restore the

computers using trusted media.

Train employees not to open attachments unless they are expecting

them. Also, do not execute software that is downloaded from the

Internet unless it has been scanned for viruses. Simply visiting a

compromised Web site can cause infection if certain browser

vulnerabilities are not patched.