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 trojan initiates a Denial of Service attack against several systems, most of which are in the langame.net domain. The executable has been packed with the PECompact packer. When run, the trojan copies itself to WINDOWS directory as NETDLL16.EXE and the Recycle Bin as Winlock.exe with hidden file attributes. A WIN.INI entry is added to load itself at startup.

run=C:\RECYCLED\winlock.exe

Symptoms

Presence of %WinDir\NETDLL16.EXE
Presence of C:\RECYCLED\Winlock.exe or C:\RECYCLER\Winlock.exe with hidden file attributes.

Method of Infection

Running this trojan installs it on the local system. Each time Windows is started, the trojan gets loaded into memory and attacks other machines on the Internet.

Removal

All Users:
Use current engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

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 trojan initiates a Denial of Service attack against several systems, most of which are in the langame.net domain. The executable has been packed with the PECompact packer. When run, the trojan copies itself to WINDOWS directory as NETDLL16.EXE and the Recycle Bin as Winlock.exe with hidden file attributes. A WIN.INI entry is added to load itself at startup.

run=C:\RECYCLED\winlock.exe

Symptoms

Symptoms -

Presence of %WinDir\NETDLL16.EXE
Presence of C:\RECYCLED\Winlock.exe or C:\RECYCLER\Winlock.exe with hidden file attributes.

Method of Infection

Method of Infection -

Running this trojan installs it on the local system. Each time Windows is started, the trojan gets loaded into memory and attacks other machines on the Internet.

Removal -

Removal -

All Users:
Use current engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

Additional Windows ME/XP removal considerations

Variants

Variants -

N/A