mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-25 04:45:27 +00:00
141 lines
11 KiB
Plaintext
141 lines
11 KiB
Plaintext
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> This Virus Came To You By Way Of... <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>
|
|||
|
<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20>
|
|||
|
<EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>
|
|||
|
<EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>
|
|||
|
<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20>
|
|||
|
<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Computer Research & Information Service <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Cris is a group of computer users that have a true interest in <20>
|
|||
|
<EFBFBD> Computer Viruses and Trojans, as well as how they work. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Members of Cris feel a need, not only to be up on the latest <20>
|
|||
|
<EFBFBD> Bombs, Trojans, Worms, and Viruses, but to safely transfer these <20>
|
|||
|
<EFBFBD> files into the hands of other dedicated researchers. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Cris cannot be held responsible for the use or misuse of these <20>
|
|||
|
<EFBFBD> files. Cris releases are sent out to better the knowledge of the <20>
|
|||
|
<EFBFBD> virus community, for those who would like to learn more about them <20>
|
|||
|
<EFBFBD> and how they work. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Also, all Cris releases have been pre-tested and informative text <20>
|
|||
|
<EFBFBD> files are enclosed with valuable information regarding the type of <20>
|
|||
|
<EFBFBD> virus, how it works, and removal information. If the virus you <20>
|
|||
|
<EFBFBD> downloaded is not a Cris release, you don't know what you've got. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> DuWayne Bonkoski <20>
|
|||
|
<EFBFBD> (Original Text Written By Michael Paris) <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
|||
|
<EFBFBD> Cris Release Date:12/18/93 <20>
|
|||
|
<EFBFBD> Type: Virus <20>
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
|||
|
<EFBFBD> VSUM Information - Quoted from Patricia M. Hoffman's Hypertext VSUM <20>
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ
|
|||
|
<EFBFBD> No Information Found <20>
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
|||
|
<EFBFBD> Scanning Results <20>
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> McAfee's ViruScan Reports - Detected [Flue] <20>
|
|||
|
<EFBFBD> File had to be deleted <20>
|
|||
|
<EFBFBD> F-Prot's ViruScan Reports - Detected [Flue] <20>
|
|||
|
<EFBFBD> File had to be deleted <20>
|
|||
|
<EFBFBD> TBAV's ViruScan Reports - Detected [Flue] <20> <20>
|
|||
|
<EFBFBD> Successfully repaired executable <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
|
|||
|
<EFBFBD> Researcher's Notes <20>
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ
|
|||
|
<EFBFBD> The FLUE virus is a polymorphic virus which infects COM files only. The <20>
|
|||
|
<EFBFBD> FLUE virus has a very visible way to letting you know it has infected <20>
|
|||
|
<EFBFBD> a file. The virus will "flip" a character screen from right to left or <20>
|
|||
|
<EFBFBD> vice versa. The screen flip does not work on monochrome monitors, however, <20>
|
|||
|
<EFBFBD> because the virus is hard-coded to read segment B800 which is where screen <20>
|
|||
|
<EFBFBD> information lies for color text modes. Monochrome video lies in <20>
|
|||
|
<EFBFBD> the B000 segment and the virus does not have a routine to sense which <20>
|
|||
|
<EFBFBD> type of video is being used. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> The virus hooks interrupt 24 (Critical Error Handler) which causes the <20>
|
|||
|
<EFBFBD> virus to replicate if a critical error occurs during execution. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> The virus does not become memory resident as far as I can tell. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> A character string can be found within the virus body which may appear <20>
|
|||
|
<EFBFBD> un-encrypted within infected files. The string reads as follows: <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Hatsjeee!! <C> 1992/1993 by TridenT / [D<>RkR<6B>Y]Oh, BTW it's from Holland, <20>
|
|||
|
<EFBFBD> and is called the FLUEFor those who are interested...... <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Encryption <20>
|
|||
|
<EFBFBD> ========== <20>
|
|||
|
<EFBFBD> The FLUE encrypts itself by XOR'ing the body of the virus with a <20>
|
|||
|
<EFBFBD> randomly generated word varaiable and then uses the variable's complement <20>
|
|||
|
<EFBFBD> on the next encryption cycle. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Infection <20>
|
|||
|
<EFBFBD> ========= <20>
|
|||
|
<EFBFBD> The FLUE infects COM files having a length between 500 and 47987 bytes. <20>
|
|||
|
<EFBFBD> The virus does not check to see if the file has already been infected and <20>
|
|||
|
<EFBFBD> will attempt to re-infect an already infected file. <20>
|
|||
|
<EFBFBD> The decryption routine the virus creates is very polymorphic. The program <20>
|
|||
|
<EFBFBD> will randomly change which registers it uses to decrypt itself for each <20>
|
|||
|
<EFBFBD> infected file. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> The infected files grow by a varying number of bytes. The virus <20>
|
|||
|
<EFBFBD> copies a random number of bytes from the zero page and appends them to <20>
|
|||
|
<EFBFBD> the end of the executable before infecting the file. This is what causes <20>
|
|||
|
<EFBFBD> the random growth. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Upon execution of an infected file, the virus will try to infect between <20>
|
|||
|
<EFBFBD> one and eight files plus one more for each directory it moves into. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> An interesting note on how the virus appends itself to other COM files. <20>
|
|||
|
<EFBFBD> At first glance, the source codes does not show any significant file <20>
|
|||
|
<EFBFBD> write routines that are necessary to cause replication. It took me <20>
|
|||
|
<EFBFBD> a while to figure out how the virus accomplished this. It does this <20>
|
|||
|
<EFBFBD> by building it's own write routine as it runs in memory. Just another <20>
|
|||
|
<EFBFBD> example of the polymorphic capabilities of this virus. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Detection <20>
|
|||
|
<EFBFBD> ========= <20>
|
|||
|
<EFBFBD> All scanners tested will detect this virus. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> This virus can be detected using the following scan strings (for those <20>
|
|||
|
<EFBFBD> who are using older/other scan utilities): <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> 89?18B?1B94002?331?1F7?349 - TBAV <20>
|
|||
|
<EFBFBD> 89??8B??B94002??????31??F7??????49 - F-PROT <20>
|
|||
|
<EFBFBD> 89?8B?B94002???31?F7???49 - SCAN <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD> Summary <20>
|
|||
|
<EFBFBD> ======= <20>
|
|||
|
<EFBFBD> I have to admit, the virus was a challenge for me due to it's polymorphic <20>
|
|||
|
<EFBFBD> capabilities. I had to step through it a couple of times to get a feel <20>
|
|||
|
<EFBFBD> for what was going on. I'm not sure why all the polymorphism is used <20>
|
|||
|
<EFBFBD> in this particular strain since the visual cues easily let you know <20>
|
|||
|
<EFBFBD> something unusual is happening. Otherwise, this virus is a pretty fast <20>
|
|||
|
<EFBFBD> replicator that wants to be noticed in its own little way. <20>
|
|||
|
<EFBFBD> <20>
|
|||
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|