McAfee > Theat Center > Virus Detail Page

Overview

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Characteristics

This is a BackDoor trojan written in the Perl script language. This trojan enables the intruder remote shell access.

Most recently, this trojan was found to be used in instrusions involving the Linux/Lupper.worm.b virus. Upon successful penetration, Perl/BackDoor-CXZ.gen may perform the following:

• Sends kernel type and version information to the intruder
• Disable user shell command log to hide intruder traces
• Connects back to the intruder's machine on an arbitrary port providing the intruder with remote shell access.

Symptoms

• Presence of one or more of the followings:
  • /tmp/ping.txt
• Unexpected outgoing connections on port 8080 or other ports

Method of Infection

This trojan is typically downloaded onto the victim machine by exploiting a web server script vulnerability and executed with the user privileges of the web server user (usually "nobody" or "apache" on a Linux or BSD machine).

Removal

AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

Additional Windows ME/XP removal considerations

Variants

Variants

N/A

All Information

Overview -

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Characteristics

Characteristics -

This is a BackDoor trojan written in the Perl script language. This trojan enables the intruder remote shell access.

Most recently, this trojan was found to be used in instrusions involving the Linux/Lupper.worm.b virus. Upon successful penetration, Perl/BackDoor-CXZ.gen may perform the following:

• Sends kernel type and version information to the intruder
• Disable user shell command log to hide intruder traces
• Connects back to the intruder's machine on an arbitrary port providing the intruder with remote shell access.

Symptoms

Symptoms -

• Presence of one or more of the followings:
  • /tmp/ping.txt
• Unexpected outgoing connections on port 8080 or other ports

Method of Infection

Method of Infection -

This trojan is typically downloaded onto the victim machine by exploiting a web server script vulnerability and executed with the user privileges of the web server user (usually "nobody" or "apache" on a Linux or BSD machine).

Removal -

Removal -

AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

Additional Windows ME/XP removal considerations

Variants

Variants -

N/A