Virus Database

Trojan-Downloader.Win32.Slime.e

Description Trojan-Downloader.Win32.Slime.e
This Trojan downloads other files via the Internet without the user's knowledge or consent. The Trojan itself is a Windows PE EXE file approximately 120 KB or greater in size. The size of the infected file may vary. Once launched, this Trojan creates a file named "Rundll.exe" in the Windows systemall

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IRC-Worm.Kazimas

Description IRC-Worm.Kazimas

This is an IRC virus-worm that spreads itself via mIRC channels. It appears as a MILBUG_A.EXE DOS EXE file about 10Kb in length. When it is executed, it copies itself to several disk directories under different names:
C:WINDOWSKAZIMAS.EXE
C:WINDOWSSYSTEMPSYS.EXE
C:ICQPATCH.EXE
C:MIRCNUKER.EXE
C:MIRCDOWNLOADMIRC60.EXE
C:MIRCLOGSLOGGING.EXE
C:MIRCSOUNDSPLAYER.EXE
C:GAMESSPIDER.EXE
C:WINDOWSFREEMEM.EXE

The worm then infects the installed mIRC client in the C:MIRC directory: it creates a new script file SCRPT.INI and overwrites the MIRC.INI configuration file. If the mIRC client is installed in any other path, the worm fails to infect it.
The worm modifies the MIRC.INI files that customize the mIRC client. There are several options set, for instance a user's identity is set to "kazimas", and the additional script file SCRPT.INI is included in auto-run scripts.
The SCRPT.INI file, that is dropped by the worm, contains several instructions that switch a user to the "Chat2K" channel, send messages to there, and the most important: send to the channel the worm copy (the C:WINDOWSKAZIMAS.EXE file).
The worm also overwrites the C:AUTOEXEC.BAT file with instructions that restore worm's copies (if they are erased) and execution:
@copy c:windowssystempsys.exe c:windowskazimas.exe >nul
@copy c:windowskazimas.exe c:kazimas.exe >nul
@c:kazimas.exe >nul
@cls

IRC-Worm.Lara

Description IRC-Worm.Lara

This is a silly IRC worm spreading through IRC channel and using mIRC client for spreading.
This is the first known modern Internet worm that spreads "Desktop Themes" files.
The worm appears on computer as the "LaraCroft.theme" filename.
On start this file the worm looks for mIRC-client, creates subsidiary VBS file in Windows directory and starts it. This file overwrites the mIRC script file SCRIPT.INI. The new script sends the worm copy to any user that enters infected channel.

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