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Tuesday, November 22, 2005

Risk Virus Alert - WORM_SOBER.AG

As of November 21, 2005 2:20 PM Pacific Standard Time (PST, GMT -8:00), TrendLabs has declared a Medium Risk Virus Alert to control the spread of WORM_SOBER.AG. TrendLabs has received several infection reports indicating that this malware is spreading in the USA, Belgium, Canada, Brazil, and New Zealand.

This memory-resident worm propagates by attaching a copy of itself to an email message, which it sends to target recipients using its own Simple Mail Transfer Protocol (SMTP) engine. Since it's email propagation does not require any user intervention, the user is often unaware that this worm is sending out email messages.

The email it sends out has the following details:

From: {Email address generated by this worm}

Subject: (any of the following)
• hi,_ive_a_new_mail_address
• Mail delivery failed
• Registration Confirmation
• smtp mail failed
• Spam: Registration Confirmation
• Your Password
• Your IP was logged
• Paris_Hilton_&_Nicole_Richie
• You visit illegal websites

Message body: (any of the following)
hey its me, my old address dont work at time. i dont know why?!
in the last days ive got some mails. i' think thaz your mails but im not sure!
plz read and check ...


This is an automatically generated Delivery Status Notification.

SMTP_Error []
I'm afraid I wasn't able to deliver your message.
This is a permanent error; I've given up. Sorry it didn't work out.
The full mail-text and header is attached


Account and Password Information are attached!
***** Go to: http://www.{random}.com
***** Email: {random}.com


Dear Sir/Madam,

we have logged your IP-address on more than 30 illegal Websites.
Please answer our questions!
The list of questions are attached.

Yours faithfully,
Steven Allison

*** Federal Bureau of Investigation -FBI-
*** 935 Pennsylvania Avenue, NW, Room 3220
*** Washington, DC 20535
*** phone: (202) 324-3000


Account and Password Information are attached! ---

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Attachment: (any of the following)
• mailtext.zip
• mail.zip
• reg_pass.zip
• mail.zip
• reg_pass-data.zip
• question_list.zip
• list.zip
• downloadm
• mail_body.zip

The attached .ZIP file contains the copy of this worm using the following file name: File-packed_dataInfo.exe

When executed, it displays a fake error message box in order to trick a user into thinking that the file did not properly execute.

This worm searches the process list of the affected system for mrt.exe, the Microsoft Windows Malicious Software Removal Tool process. If found, it terminates the said process thus making the system more vulnerable to malicious attacks.

TrendLabs will be releasing the following EPS deliverables:

TMCM Outbreak Prevention Policy (Beta) - 187 (Released)
Official Pattern Release - 2.957.00 (ETA: 1.5 hrs)
Damage Cleanup Template - 678 (Being created)
Network Virus Wall - 10232 (Being created)


At 4:45 PM, Anonymous Anonymous said...

Ive been getting buttloads of these wormy emails for several days, I had it in my temp files when I clicked on it but according to virus scans its gone. I am still getting my junk mail box full of these, but only on 1 specific email account. Strange thing is, the emails I get are always addressed to other people...
It also messed up my anti virus software and seems to have deleted almost all of my system recovery check points. Holy Merde.


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