| Alias: | --- |
| Strain: | SUNTRONIC Virus |
| detected when: | October 1989 |
| where: | Elmshorn, FRG |
| Classification: | system virus (bootblock), resident |
| Length: | 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 |
| Caroname: | Suntronic |
Attributes | |
| Easy identification: | typical texts: '(C) by Suntronic', 'VORSICHT! KEIN STANDARD BOOTBLOCK', 'Linke Maustaste = Weiter', 'Rechte Maustaste = Disk installieren', 'SCHREIBSCHUTZ AN!', 'Linke Maustaste = Weiter','Rechte Maustaste = Neuer Versuch','Rechte Maustaste = Checker inaktiv' |
Type of Infection: | self-identification method: in bootblock at byte 752 ascii 'Sunt' (hex. $02F0) system infection: RAM resident, reset resident, bootblock |
| Infection Technique: | |
| Infection Trigger: | reset, any disk access |
| Storage Media affected: | only floppy disks (3.5" and 5.25") |
| Interrupts hooked: | --- |
| Stealth: | |
| Tunneling/Selfprot: | |
| Oligo/Polymorphism: | |
| Encoding Method: | |
| Damage: | permanent damage: overwriting bootblock after detecting a non standard bootblock and re- questing for bootblock installation transient damage: screen buffer manipulation: (see above) while detecting a non standard bootblock |
| Damage Trigger: | permanent damage: reset, detecting a virus and using the 'KILL VIRUS' option transient damage: (see above) |
| Particularities: | detecting a virus causes SUNTRONIC to ask for a bootblock installation, but SUNTRONIC is written and not a standard bootblock, so a boot loader may be destroyed; if no instal- lation is requested, SUNTRONIC asks whether it shall be removed from system, in this case memory is cleared (but not allocated) and CoolCapture vector is reset to default ($00000000); interrupt vectors 3 and 6, DoIO() entry and KickTag pointer are set to the default values of KICKSTART 1.2 (release 33.180); ColdCapture vector isn't changed nor tested; memory range ($0007E000 .. $0007FA00) is cleared because a lot of the known viruses use this region. |
| Similarities: | --- |
Agents | |
| Countermeasures: | 'CHECKVECTORS 2.2', 'GUARDIAN 1.2', 'VIRUSX 4.0' |
| Standard means: | 'CHECKVECTORS 2.2' |
Acknowledgements | |
| Location: | Virus Test Center, University Hamburg, FRG |
| Classification by: | Alfred Manthey Rojas |
| Documentation by: | Alfred Manthey Rojas |
| Date: | 5-June-1990 |
| Information Source: | -- |
(c) 1996 Virus-Test-Center, University of Hamburg