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Amiga Virus Encyclopedia
IRQ I Virus
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========== Computer Virus Catalog 1.2: IRQ Virus (5-June-1990) ========
Entry...............: IRQ Virus
Alias(es)...........: ---
Virus Strain........: ---
Virus detected when.: January 1989
where.: Elmshorn, FRG
Classification......: link virus (extending), resident
Length of Virus.....: 1. length on storage medium: 1060 byte
+ 36 byte (hunk)
2. length in RAM : 1060 byte
+ 36 byte (hunk)
--------------------- Preconditions -----------------------------------
Operating System(s).: AMIGA-DOS
Version/Release.....: 1.2/33.166, 1.2/33.180 and 1.3/34.20
Computer model(s)...: AMIGA 500, AMIGA 1000, AMIGA 2000A, AMIGA 2000B
--------------------- Attributes --------------------------------------
Easy Identification.: typical text: ---
others: allocates 100.000 byte of workspace
during infection of files
Type of infection...: self-identification method: $fffe6100 at 2nd word
of virus (without hunk table)
system infection: extending executable file,
RAM resident, reset resident, EXEC library
Infection Trigger...: usage of OldOpenLibrary routine of exec library
Storage media affected: any available storage medium
Interrupts hooked...: ---
Damage..............: permanent damage: causes some overlay programs to
malfunction because of altered offsets in hunk
table; DIR command of CLI is infected (stan-
dard file); 1st file used in startup-sequence
of inserted disk is infected (random file);
use of a nearly full disk may cause a
read/write error when the infected file won't
fit on disk, this disk may not be repaired.
transient damage: screen buffer manipulation:
changes window title of actual window:
'AmigaDOS presents:a new virus by the
IRQ-Team V41.0'
Damage Trigger......: permanent damage: usage of OldOpenLibrary routine
of exec library
transient damage: by random
Particularities.....: only infects files with a maximum length of
99.999 byte; uses SetFunction routine of exec
library to modify entry of the OldOpenLibrary
routine; other resident programs using the
system resident list (KickTagPointer,
KickMemPointer) are shut down.
Similarities........: ---
--------------------- Agents ------------------------------------------
Countermeasures.....: Names of tested products of Category 1-6:
Category 1: .2 Monitoring System Vectors:
'CHECKVECTORS 2.2'
.3 Monitoring System Areas:
'CHECKVECTORS 2.2','GUARDIAN 1.2',
'VIRUSX 4.0'
Category 2: Alteration Detection: ---
Category 3: Eradication: 'CHECKVECTORS 2.2',
'RemIRQ', 'KV', 'IRQKILLER',
'LINKKILLER', 'VIRUSX 4.0',
'DVICE PLUS'
Category 4: Vaccine: ---
Category 5: Hardware Methods: ---
Category 6: Cryptographic Methods: ---
Countermeasures successful: 'CHECKVECTORS 2.2' with 'RemIRQ', 'KV',
'LINKKILLER' or 'IRQKILLER',
'VIRUSX 4.0', 'DVICE PLUS'
Standard means......: 'CHECKVECTORS 2.2', 'IRQKILLER'
--------------------- Acknowledgement ---------------------------------
Location............: Virus Test Center, University Hamburg, FRG
Classification by...: Alfred Manthey Rojas
Documentation by....: Alfred Manthey Rojas
Date................: 5-June-1990
Information Source..: ---
===================== End of IRQ Virus ================================
Antivirus...........: Kickstart 1.2 & 1.3 : VT-Schutz v3.17
Kickstart all others: VirusZ III v1.04B or higher, and also Xvs.library v33.47 or higher
