[Dshield] FW: [Full-Disclosure] Hello Mydoom

Micheal Patterson micheal at tsgincorporated.com
Thu Jan 29 15:42:34 GMT 2004

I'd like to know if this can be confirmed. So far, none of the systems that
I'm in control over have been hit by either a or b versions so far.


Micheal Patterson
TSG Network Administration

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----- Original Message ----- 
From: "Paul Marsh" <pmarsh at nmefdn.org>
To: <list at dshield.org>
Sent: Thursday, January 29, 2004 8:04 AM
Subject: [Dshield] FW: [Full-Disclosure] Hello Mydoom

> Morning All:
> I don't know maybe this is the wrong thing to forward but can
> the coders of the group take a look at this email of FD's list.
> Thanx, Paul
> -----Original Message-----
> From: Juari Bosnikovich [mailto:juarib at m-net.arbornet.org]
> Sent: Wednesday, January 28, 2004 05:40 PM
> To: full-disclosure at lists.netsys.com
> Subject: [Full-Disclosure] Hello Mydoom
> When I disassembled the virus I found new information that haven't came
> up anywhere else to this time.
> Here is the information that is beleived...
> 1. use restricted usernames to send email to and from
> 2. encode strings with ROT13 method
> 3. create a mutex called 'SwebSipcSmtxSO' when ran
> 4. transform in taskmon.exe and
> 4.1 add [HKLM\Software\Microsoft\Windows\CurrentVersion\Run]
>    "TaskMon" = %sysdir%\taskmon.exe
> 4.2 add [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
>    "TaskMon" = %sysdir%\taskmon.exe
> 5. add %sysdir%\shimgapi.dll
>   open ports 3127/tcp - 3198/tcp
> 6. stops spreading febuary 12
> 7. spreads through KaZaA and Electronic Mail System
> 8. and more very technical fact i will not describe here
> What I found...
> Even if the virus (Mydoom) is programmed in assembler and compiled using
> masm it is made to look like it has been programmed in C++ when
> disassembling. It is a fact that many more information are hidden and
> undiscovered to this date such as the fact that it will stop spreading
> on febuary 12 which is not true. Mydoom will pass in a new phase upon
> febuary 12 and it will be very much more serious as it will be updated
> and will mutate in Mydoom.C. The backdoor (shimgapi.dll) is open a port
> but this is used to obscur the real intention of Mydoom.B as well as
> Outlook express.
> It was also unknown that the virus infects the BIOS of the computer it
> infects by injecting a 624bytes backdoor written in FORTH which will
> open port tcp when Mydoom will be executed AFTER febuary 12.
> It is a conclusion that the viral professionals that published diagnosis
> of the Mydoom.A virus are trying to hide something or are very
> incompetent.
> Also there are no way to fix the virus that is injected in the BIOS
> after it has been infected except from flashing it AFTER disinfecting
> the workstation that was infected.
>                                         Juari Bosnikovich
> _______________________________________________
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