CLAAS ABRAHAM Virus (5-June-1990)
Entry...............: CLAAS ABRAHAM Virus
Alias(es)...........: --
Virus Strain........: --
Virus detected when.: November 1989
              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, AMIGA 2000A, AMIGA 2000B
--------------------- Attributes --------------------------------------
Easy Identification.: typical text: in bootblock: --
                         in memory: '>>> Claas Abraham Virus !!! <<<'
Type of infection...: self-identification method: ---
                      system infection: RAM resident, reset resident,
                         bootblock
Infection Trigger...: reset (CONTROL + Left-AMIGA + RIGHT-AMIGA)
                      operation: any access on bootblock sectors
Storage media affected: only floppy disks (3.5" and 5.25")
Interrupts hooked...: interrupt vector 3 (IV 3)
Damage..............: permanent damage: overwriting bootable standard
                         bootblocks; formatting disks from sector 880;
                         changes reset entry (adress: $00FC00D2),
                         reason is unknown yet
                      transient damage: ---
Damage Trigger......: permanent damage: reset
                         operation: at any access on bootblock sectors
                         (blocks 0 and 1), formatting disks from sector
                         880 after 16th infection
                      transient damage: ---
Particularities.....: a resident program using the CoolCapture and/or
                         the ColdCapture vector is shut down
                      resident programs using the system resident list
                         (KickTagPointer,KickMemPointer) are shut down;
                         virus creates a resident list called 
                         '>>> Claas Abraham Virus !!! <<<'
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: without restrictions:
                             'CHECKVECTORS 2.2', 'VIRUSX 4.0'
                            with restrictions: 'GUARDIAN 1.2'
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..: ---

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