RE: [Full-Disclosure] Possible New Malware

[Perrymon, Josh L.]

Title: Message

After sending the file to the link below this is what we found.

 http://www.kaspersky.com/scanforvirus

 

I'm awaiting the binary to review.

 

It probably came in on a laptop and spread to machines unpatched to MS04-11.

W32/Forbot-C is a worm which attempts to spread to remote network shares. The worm also contains backdoor Trojan functionality, allowing unauthorised remote access to the infected computer via IRC channels while running in the background as a service process.

W32/Forbot-C moves itself to the Windows system folder as winitr32.exe andcreates the following registry entries to run itself on system logon:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Win32 Wmls Driver = winitr32.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunOnce\
Win32 Wmls Driver = winitr32.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
Win32 Wmls Driver = winitr32.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
Win32 Wmls Driver = winitr32.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce\
Win32 Wmls Driver = winitr32.exe

W32/Forbot-C attempts to spread to network machines using various exploits including the LSASS vulnerability (please see MS04-011).

W32/Forbot-C attempts to terminate several processes related to anti-virus and security related software.

 

-----Original Message-----
From: Perrymon, Josh L. [mailto:[EMAIL PROTECTED]
Sent: Tuesday, September 14, 2004 9:02 AM
To: [EMAIL PROTECTED]
Subject: [Full-Disclosure] Possible New Malware

Anyone Heard of BackDoor-CIW?

This is a piece of malware with the .exe of winstr32.exe that is causing 99% CPU on a couple machine at a remote location. I found that one infected machine does not have MS04-11 patched. So that could be an attack vector.

I get no luck googling for the .exe or BackDoor-CIW   <----  This is what Postini identifies the file as.

I'm trying to get a copy to put in my VMWare Lab.

Also----   Isn't there a website that we can email this file to and it will run several AV solutions on it to find more info?

Joshua Perrymon
Sr. Network Security Consultant

PGP Fingerprint
51B8 01AC E58B 9BFE D57D  8EF6 C0B2 DECF EC20 6021

**********CONFIDENTIALITY NOTICE**********
The information contained in this e-mail may be proprietary and/or
privileged and is intended for the sole use of the individual or
organization named above.  If you are not the intended recipient or an
authorized representative of the intended recipient, any review, copying
or distribution of this e-mail and its attachments, if any, is prohibited.
If you have received this e-mail in error, please notify the sender
immediately by return e-mail and delete this message from your system.