** Nimda_Fix Trojan Horse **

We have been notified that Trojan.Fix_Nimda is a trojan program propagating through e-mail disguised as a fix for the Nimda worm claiming to be from Security Focus and Trend Micro, two security services companies. Antivirus signatures to detect this trojan are currently unavailable.  No safeguards currently exist aside from the user deleting the file attachment FIX_NIMDA.exe, which actually infects the target device. If you receive this email, DO NOT OPEN THE ATTACHMENT.  Remember, any "exe" file received in email should be regarded as suspicious.

A partial example of the text carried by the false email is shown below:
From: aris-report@securityfocus.com
Hello,
This mail is from the ARIS Analyzer Service (Attack Registry and Intelligence Service) from SecurityFocus in cooperation with Trend Micro Incorporated. As you are probably aware from the media, the Nimda worm started spreading. It has come to our attention that your system(s), listed below have been identified as being compromised by the Nimda Worm. The Nimda Worm is rapidly spreading across the Internet.