Maaike Virus

 Virus Name:  Maaike 
 Aliases:     Maaike.164 
 V Status:    Rare 
 Discovered:  April, 1994 
 Symptoms:    .EXE files disappear from directory; .EXE files overwritten; 
              Error messages 
 Origin:      Unknown 
 Eff Length:  164 Bytes (Overwriting) 
 Type Code:   ORsE - Overwriting Resident .EXE Infector 
 Detection Method:  ViruScan, IBMAV, AVTK, Sweep, F-Prot, NAV, 
                    NAVDX, VAlert, PCScan, 
                    NShld, Sweep/N, AVTK/N, IBMAV/N, NProt, NAV/N 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Maaike virus was submitted in April, 1994.  The sample submitted 
       was from The Netherlands, though the following month a variant was 
       received from a public domain infection in Canada.  Its origin is 
       unknown.  Maaike is a memory resident overwriting virus which 
       destroys .EXE programs and interfers with system operation. 
       When the first Maaike infected program is executed, this virus will 
       install itself memory resident as a low system memory TSR, hooking 
       interrupt 21.  The system user will then be returned to the DOS 
       Once the Maaike virus is memory resident, execution of an .EXE 
       program will result in the virus replacing the .EXE program with 
       a 164 byte copy of itself.  The 164 byte file of viral code will 
       have the same name as the original .EXE file, with the current 
       system date and time.  The hidden attribute will be set, thus the 
       .EXE file will appear to have been deleted.  No text strings are 
       visible within the viral code. 
       Execution of .COM programs with the Maaike virus memory resident 
       will result in the following message being displayed: 
               "Bad Command or file name" 
       The .COM files are unaltered, and will function if the virus is 
       not memory resident.  Other error messages may also occur when 
       .COM and .EXE programs are executed with the virus memory resident, 
       primarily of the "Write fault error writing device AUX" or write 
       protect errors when attempting to execute .EXE programs from write 
       protected diskettes. 
       Known variant(s) of Maaike are: 
       Maaike.250: A 250 byte variant of the Maaike virus described 
                   above, this variant contains the following encrypted 
                   text string: 
                   "Maaike I Love You !" 
                   Isolated:  Canada  May, 1994 
       Maaike.757: Received in August, 1994, Maaike.757 is a 757 byte 
                   variant of the Maaike virus described above.  Its low 
                   system memory TSR is approximately 1,024 bytes, hooking 
                   interrupts 21 and 22.  Once resident, execution of an .EXE 
                   program will result in the virus replacing the program 
                   with a copy of itself.  This "copy" will be 757 bytes 
                   in size, and have the hidden attribute set in the DOS 
                   disk directory.  The file's date and time will be the 
                   current system date and time when infection occurred. 
                   The following text strings are visible within the viral 
                   "Unknown Enemy(c) Metal Militia/Immortal Riot" 
                   "I'm hurt, machineguns firing behind my back" 
                   "Never had no chance, no way to do a attack" 
                   "This one sure is the last time i guess" 
                   "Heading for a private deathrow, nothing less" 
                   "Blood, quickly pumping out from the vound in the vain" 
                   "Damn, this moment makes you sort of go insane" 
                   "Close my eyes, had much left to see" 
                   "Was my fault, but did they have to do it, gee?" 
                   "Promise me, this hit you will remember" 
                   "Take one of them down before winter comes in december" 
                   "Why that month?Well, i like it very much" 
                   "Fresh, cool air, wonders of the snow to touch" 
                   "The world is wonderful, what else to say?" 
                   "Just remember this shit, cause it happends every day" 
                   With the Maaike.757 virus memory resident, all programs 
                   will fail to function properly. 
                   Origin:  Unknown  August, 1994 

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