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Amiga Virus Encyclopedia
Zaccess v1.0 Virus
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== Computer Virus Catalog 2.0: ZACCESS V1.0 Virus (14-December-1993) ===
Entry...............: ZACCESS V1.0 Virus
Alias(es)...........: ---
Virus Strain........: 16 Bit Crew Virus strain
detected when.: ---
where.: ---
Classification......: system virus (bootblock), resident
Length of Virus.....: 1. Length on storage medium: 1024 bytes
2. Length in RAM: 1024 bytes
--------------------- Preconditions -------------------------------------
Operating System(s).: AMIGA-OS
Version/Release.....: all system releases
Computer model(s)...: all models
--------------------- Attributes ----------------------------------------
Easy identification.: text visible in bootblock: "ZACCESS V1.0 / 1991"
Type of Infection...: Self-identification method: Virus checks if the
sum of two matchwords in the bootblock equals
zeros; if yes, the virus assumes to have found
itself on disk
System infection: RAM resident, reset resident,
bootblock
Infection Trigger...: reset
Storage Media affec.: only floppy disks
Systemcalls hooked..: DoIO vector of exec-library, CoolCapture
Stealth.............:
Tunneling/Selfprot.¾:ºOligo¿Pÿnymorphism..:
Encoding Method...,.:
Damage..............: Permanent damage: overwriting bootblock
° °Transùeþv damage: LED flashing 10 or 3 times)
Damage Trigger......: Permanent damage: reset
Transient damage: depending on infection counter
value and mouse button during
boot
Particularities.....: a resident program using the CoolCapture vector
is shut down
Similarities........:
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Countermeasures.....: Virus Workshop V3.0, VirusChecker V6.3, VT 2.58,
VirusZ 3.07
Standard means......: VT 2.58, Virus Workshop V3.0
--------------------- Acknowledgements ----------------------------------
Location............: Virus Test Center, University of Hamburg, Germany
Classification by...: Karim Senoucci
Documentation by....: Karim Senoucci
Date................: 14-December-1993
Information Source..: Virus analysis
======================= End of ZACCESS V1.0 Virus =======================
Antivirus removal...: Kickstart 1.2 & 1.3 : VT-Schutz v3.17
Kickstart all others: VirusZ III, and also Xvs.library must be installed
Ascii of Zaccess v1.0 virus:
