full-disclosure - [UPDATE] ping floods

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From: benjurry at szcert.org (benjurry)
Subject: [UPDATE] ping floods

This worn written by VC++6.0 and compressed by UPX. Its size is 10240 bytes.
The worm's aim is to remove the msblast anf patch the system,which infects by RPC DCOM and WebDEV.
When it go into the system ,it copy %systemroot%\system32\dllcache\tftpd.exe to %systemroot%\system32\wins\svchost.exe ,then create the service named RPCTftpd ,and its Display is ""Network Connections Sharing".
And then It copy himself to %systemroot%\system32\wins\dllhost.exe ,then create the service named RpcPath .
3rd,the worm will check the process "msblast" and remove it ,then download the patch form the M$ according diffrent language version,and patch system with parameter "-n -o -z -q".
Then it scan the subnet with ICMP filled with ,whose type is "echo" and size is 92 bytes ,so there are large volumes of ICMP traffic in network .when the worm find a host ,it will try to infect with RPC DCOM and Webdev, If sucess it will listen a TCP port less than 1000 to send the file.If the year is 2004,then it will remove itself.So the easiest way to remove is adjust your time.

It seems it is a "good " worm to clean msblast:)

benjurry

----- Original Message ----- 
From: "Sam Pointer" <sam.pointer@...software.com>
To: "'Abraham, Antony (Cognizant)'" <Antony@....cognizant.com>; <B3r3n@...osnet.com>; <full-disclosure@...ts.netsys.com>
Sent: Tuesday, August 19, 2003 12:15 AM
Subject: RE: [Full-Disclosure] [UPDATE] ping floods

> Antony Abraham wrote:
> >
> >http://vil.nai.com/vil/content/v_100559.htm 
> >
> >New RPC worm which will generate lot of ICMP traffic.
> 
> Well I guess it would appear from this portion of NAI's analysis that
> someone was listening to the thread on this list about writing an
> anti-blaster worm:
> 
> "The worm carries links to various patches for the MS03-026 vulnerability:
> ...
> The worm attempts to download and install one of these patches on the victim
> machine."
> 
> 
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