Re: possible new irc worm

[Axel Pettinger <api () epost de>]

ZSisic wrote:
> Hello everybody,
>
> As of today, we started noticing spamming bots or drones on our IRC 
> network. They enter channels, scan for users, exit and spam users with 
> following messages:
>
> <kyzclvqfc> EEEEEEETHHHOOOM! MINDJAIL!! HE IS TRAPPED!! GET HIM OUT!
> http://61.48.32.73:3030/mindjail.zip
>
>
>
> <pwdujizao> Ever heard of a thing called mindjail? Check it:
> http://61.106.85.184:3030/mindjail.zip
>
>
>
> Did anybody else notice this behavior? It seems to be a new work. I 
> searched on Google for "mindjail", but my search did not return 
> anything.

"mindjail.zip" contains a HTML file, "mindjail.html", which drops and
executes "javax.sun.base.exe" (MD5: 286b884697dffd5a535295dcf5a4c6ea) on
vulnerable systems - see "Self-Executing HTML: Internet Explorer 5.5 and
6.0 Part II", <http://www.securityfocus.com/archive/1/313174>, for more
information about the vulnerability.

"javax.sun.base.exe" is an upx'ed SdBot variant. It tries to connect to
"hk.zxy0.com" [64.156.241.176].

The most anti virus scanners fail to detect the exploit code and the
backdoor trojan. But a few scanners report the following:

[MINDJAIL.HTML]

    Dialogue Science DrWebWCL  : Trojan.SelfExecHtml
    GeCAD RAVAV                : HTML/CodeBaseExec*
    Kaspersky Lab KAVDOS32     : TrojanDropper.JS.Mimail.b
    Symantec NAV CE VSCAND     : Trojan.Sefex

[JAVAX.SUN.BASE.EXE]

    GeCAD RAVAV                : Backdoor:IRC/SdBot
    Kaspersky Lab KAVDOS32     : Backdoor.SdBot.gen


Regards,
Axel Pettinger

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