Many things inside the worm's code suggest that it originates from Russia.
The worm tries to spread via an attachment file called 11september.exe. When this file is executed, the worm will attempt to send the following email to each address found from the Windows address book:
From: main@world.com
To: all-people-in-the-address-book
Subject:
All people!!
Attachment: 11september.exe
Dear ladies and gentlemen!
The given letter does not contain viruses, and is not Spam.
We ask you to be in
earnest to this letter. As you know America and
England have begun bombardment of
Iraq, cause of its threat for all the world.
It isn't the truth. The real reason is
in money laundering and also to cover up traces
after acts of terrorism
September, 11, 2001. Are real proofs of connection between
Bush and Al-Qaeda
necessary for you? Please! There is a friendly dialogue between
Bin Laden and the secretary of a state security of USA in the given photos.
In the following photo you'll see, how FBI discusses how to strike over New York to lose
people as much as possible. And the document representing the super confidential
agreement between CIA and Al-Qaeda is submitted to your attention. All this
circus was specially played to powder brains!! You'll find out the truth.
Naked truth, instead of TV showed.
For your convenience, and to make letter less, all documentary materials
(photos and MS Word documents) are located in one EXE file.
Open it, and all materials will be
installed on your computer. You will receive the
freshest and classified
documents automatically from our site.
It isn't a virus! You can trust us absolutely. We hope, that it will open your
eyes on many things occurring in this world.
Please note that the screenshot was taken in a laboratory environment. The worm is unable to spread in normal conditions.
When Chet sends the infected messages it also collects information about the infected computer and the current user. All the collected data is sent to a predefined email address to Russia.
System infection
When the worm is first executed on a computer it copies itself to the Windows System Directory as 'synchost1.exe'. This file is then added to the registry as
'HKLU\Software\Microsoft\Windows\CurrentVersion\Run\ICQ1'
Chet stores some of its internal data in a registry key:
'HKLU\DefaultLcid2'
After 13th of September, 2002 the worm commits suicide and removes itself from the infected computer.
Payload
If the infected computer has a modem the worm tries to call a predefined phone number. The number most likely a local number in some country. The owner of the number is unknown, so it the purpose of the call.
Since the worm crashes relatively early this routine is never activated.