Virus Database

IRC-Worm.Sonne

Description IRC-Worm.Sonne

This is an IRC worm that spreads through IRC channels using mIRC client for spreading. The worm appears on a computer as the "Sonnet.vbe" VBE program. When this file is executed by a user, the worm installs itself into the Windows directory and overwrites the mIRC SYSTEM.INI script file with new instructions.
The commands that are written to the SYSTEM.INI mIRC script intercept several events:
- when a new user enters the infected channel, (s)he is sent by the worm copy (the C:WINDOWSSONNET.VBE file).

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Antiscan.508

Description Antiscan.508

This is a dangerous, non-memory resident virus. It searches for *.G?? files and deletes them. It creates a C:SCAN.COM file, and writes itself into this file. Upon infection, it displays the following: "Shouldn't oughta be looking at nasty shit".

AntiSkola.2111

Description AntiSkola.2111

It is a dangerous memory resident parasitic virus. It hooks INT 9, 21h and writes itself to the end of COM and EXE files that are executed. While infecting the COMMAND.COM file the virus patches its code at fixed offset and writes JMP-Virus instruction to there. That does work only for some COMMAND.COM version(s) and corrupts COMMAND.COM from other DOSes (including Win95).
On keystrokes (INT 9) depending on the system timer the virus changes the data in keyboard buffer. Depending on the system timer the virus stops executing the TURBO.EXE and TPX.EXE files. Also depending on the system time the virus decrypts and displays the message (see below), plays a tune and halts the computer:
Dobry den,predstavuje se Vam virus AntiSkola.Tento virus byl napsan
pro demonstraci idealniho preziti viru ve skolnim prostredi.Doufam,
ze se Vam bude libit.
Moje podekovani patri zejmena :
Firme Borland International Inc. za TurboAssembler a TurboDebugger
Skole za to,ze mi umoznila nerusene programovat
Firme Microsoft za "operacni system" MS-DOS,ktery byl koncipovan
primo pro viry.Na prikladu WINDOWS 95 je jasne videt,ze se stale
teto filozofie nevzavaji.Mozna by si meli neco precist o
protected modu a preemtivnim multitaskingu.
At zije SOSE v Brne na Obranske !!

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