SCA.D&A.Dropper (31-July-1993)
Entry...............: SCA.D&A_dropper Virus
Alias(es)...........: SCA Dos kill = D&A File Virus
Virus Strain........: SCA Virus Strain
Virus detected when.: ---
              where.: ---
Classification......: Boot Virus dropper, memory resident
Length of Virus.....: 1.Length on storage medium: 1052 byte
                      2.Length in RAM:            1024 byte
--------------------- Preconditions ------------------------------------
Operating System(s).: AMIGA-DOS
Version/Release.....: 1.2/all, 1.3/all, 2.0/all, 3.0/all
Computer model(s)...: All models
--------------------- Attributes ---------------------------------------
Easy Identification.: Typical text in virus and displayed: 
                         "Something wonderful has happened
                          Your Amiga is fucked !! and, even better...
                          Some of your disks are infected by a Virus !!!
                          Another masterpiece of The Mega-Mighty D&A !!"
Type of infection...: Self-identification method: virus test whether
                         4th longword matches string "CHW!" (this
                         isnot done properly)
                      System infection : RAM resident, reset resident
Infection Trigger...: Reset
Storage media affected: Only floppy disks (3.5" and 5.25")
Interrupts hooked...: ---
Damage..............: Permanent damage: Overwriting bootblock with
                                        a Non-Dos bootblock
                      Transient damage: Screen buffer manipulation:
                                        screen becomes black, message
                                        (see typical text) is shown by
                                        fading in and out peaces of it
Damage Trigger......: Permanent damage: Reset
                      Transient damage: 15th infection
Particularities.....: A resident program using the CoolCaptureVector
                         is shut down by virus' suicide function. 
Similarities........: SCA virus strain
--------------------- Agents -------------------------------------------
Countermeasures.....: VirusZ 3.06, VT 2.54, VirusChecker 6.28
Countermeasures successful: VirusZ 3.06, VT 2.54
Standard means......: VT 2.54
--------------------- Acknowledgement ----------------------------------
Location............: Virus Test Center, University Hamburg, Germany
Classification by...: Jens Vogler / Karim Senoucci
Documentation by....: Jens Vogler / Karim Senoucci
Date................: 01. VII. 1993
Information Source..: Virus disassembly / Erik Loevendahl, Praestoe,DK

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