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Amiga Virus Encyclopedia
Gyros Virus
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======== Computer Virus Catalog 1.2: GYROS Virus (5-June-1990) ========
Entry...............: GYROS Virus
Alias(es)...........: --
Virus Strain........: --
Virus detected when.: December 1988
              where.: Elmshorn, FRG
Classification......: system virus (bootblock), resident
Length of Virus.....: 1. length on storage medium: 1024 byte
                      2. length in RAM           : 1024 byte
--------------------- Preconditions -----------------------------------
Operating System(s).: AMIGA-DOS
Version/Release.....: 1.2/33.180
Computer model(s)...: AMIGA 500, AMIGA 1000
                         (without any memory expansions)
--------------------- Attributes --------------------------------------
Easy Identification.: typical text: 'Dear Arnd! Your Amiga is fucked
                         from a nice GYROS. Many greetings to you from
                         Goeblodiel!!'
Type of infection...: self-identification method: string 'DOS' and
                         hex. $0 at memory location $0007EC00
                      system infection: RAM resident, reset resident,
                         bootblock
Infection Trigger...: reset (CONTROL + Left-AMIGA + RIGHT-AMIGA)
Storage media affected: only floppy disks (3.5" and 5.25")
Interrupts hooked...: ---
Damage..............: permanent damage: overwriting bootblock,
                         blocking system reboot after some time, system
                         has to be turned off; this seems to be a
                         prerelease of a virus, blitter data is
                         included in the virus, but not used.
                      transient damage: screen buffer manipulation:
                         screen becomes black, boot operation will be
                         blocked after some time; animated graphic is
                         not shown (see above).
Damage Trigger......: permanent damage: reset
                         others: unknown yet
                      transient damage: after 10th infection, action
                         part (animated blitter graphics) is not
                         executed.
Particularities.....: resident programs using the CoolCaptureVector 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',
                                     'VIRUSX 4.0'
                      Category 4: Vaccine: ---
                      Category 5: Hardware Methods: ---
                      Category 6: Cryptographic Methods: ---
Countermeasures successful: 'CHECKVECTORS 2.2', 'GUARDIAN 1.2',
                            'VIRUSX 4.0'
Standard means......: 'CHECKVECTORS 2.2'
--------------------- Acknowledgement ---------------------------------
Location............: Virus Test Center, University Hamburg, FRG
Classification by...: Wolfram Schmidt
Documentation by....: Alfred Manthey Rojas
Date................: 5-June-1990
Information Source..: ---
===================== End of GYROS-Virus ==============================

Antivirus removal...: Kickstart 1.2 & 1.3 : VT-Schutz v3.17
                      Kickstart all others: VirusZ III with Xvs.library installed


Ascii of Gyros virus: