Parent class: VirWare
Viruses and worms are malicious programs that self-replicate on computers or via computer networks without the user being aware; each subsequent copy of such malicious programs is also able to self-replicate. Malicious programs which spread via networks or infect remote machines when commanded to do so by the “owner” (e.g. Backdoors) or programs that create multiple copies that are unable to self-replicate are not part of the Viruses and Worms subclass. The main characteristic used to determine whether or not a program is classified as a separate behaviour within the Viruses and Worms subclass is how the program propagates (i.e. how the malicious program spreads copies of itself via local or network resources.) Most known worms are spread as files sent as email attachments, via a link to a web or FTP resource, via a link sent in an ICQ or IRC message, via P2P file sharing networks etc. Some worms spread as network packets; these directly penetrate the computer memory, and the worm code is then activated. Worms use the following techniques to penetrate remote computers and launch copies of themselves: social engineering (for example, an email message suggesting the user opens an attached file), exploiting network configuration errors (such as copying to a fully accessible disk), and exploiting loopholes in operating system and application security. Viruses can be divided in accordance with the method used to infect a computer:- file viruses
- boot sector viruses
- macro viruses
- script viruses
Class: Email-Worm
Email-Worms spread via email. The worm sends a copy of itself as an attachment to an email message or a link to its file on a network resource (e.g. a URL to an infected file on a compromised website or a hacker-owned website). In the first case, the worm code activates when the infected attachment is opened (launched). In the second case, the code is activated when the link to the infected file is opened. In both case, the result is the same: the worm code is activated. Email-Worms use a range of methods to send infected emails. The most common are: using a direct connection to a SMTP server using the email directory built into the worm’s code using MS Outlook services using Windows MAPI functions. Email-Worms use a number of different sources to find email addresses to which infected emails will be sent: the address book in MS Outlook a WAB address database .txt files stored on the hard drive: the worm can identify which strings in text files are email addresses emails in the inbox (some Email-Worms even “reply” to emails found in the inbox) Many Email-Worms use more than one of the sources listed above. There are also other sources of email addresses, such as address books associated with web-based email services.Read more
Platform: Win32
Win32 is an API on Windows NT-based operating systems (Windows XP, Windows 7, etc.) that supports execution of 32-bit applications. One of the most widespread programming platforms in the world.Description
Technical Details
This is an Internet worm, which spreads via e-mail messages using Microsoft Outlook.
When launched, the worm copies itself to the following locations:
C:Si.exe
C:ReDe.exe
c:Disk.exe
c:Common.exe
c:UserConf.exe
Then, it sends itself to all recipients of victim's Outlook Address book.
If Microsoft Outlook is not present at victim's computer, the worm is unable to spread.The subject of messages sent by the worm is selected randomly from a list of pre-defined strings.
The attached file is always one of the following:
Si.exe
Common.exe
UserConf.exe
ReDe.exe
Disk.exe
Resedi.a
If the worm was launched on the computer for the first time, it show a message:
Title: Microsoft Windows Update
Message: Your Windows Update has been successful.
If current date is 11 November 2001, and Windows short date format is either mm/dd/yy, or dd/mm/yy, the worm writes several command to autoexec.bat, so in Windows 9x the C: drive will be formatted after reboot.
The worm writes the following registry key to start automatically with Windows:
HKLMSoftwareMicrosoftWindowsCurrentVersionRunRede
The worm sends itself in e-mail messages that have the following content:
Subject is one of the following:
FW: Microsoft security update.
FW: Security Update by Microsoft.
FW: IT departments on state of HIGH ALERT.
FW: Important news from Microsoft.
FW: Stop terrorists computer viruses reign.
FW: Terrorists release computer virus.
FW: Emergency response from Microsoft Corp.
FW: Terrorist Emergency. Latest virus can wipe disk in minutes.
FW: Microsoft Update. Final Release Candidate.
FW: New computer virus.
Message body:
Just recieved this in my email
I have contacted Microsoft and they say it's real !
-----Original Message-----
From: Microsoft Support Desk [mailto:Support@microsoft.com]
Sent: 17 October 2001 15:21
Subject: Security Update
Due to the recent spate of email spread computer viruses Microsoft Corp has released a security patch. Please apply the attached file to your Windows computer to stop any futher spread or these malicious programs. Regards Microsoft Support
The worm's body contains the following strings:
Mind the Threefold Law ye should, three times bad and three times good.
When misfortune is enow, wear the blue star on thy brow.
True in love ye must ever be, lest thy love be false to thee.
These words the Wiccan Rede fulfill: An ye harm none, do what ye will.
Rede(c)Si 2001 ... heh, want my phone number too ?!?
Sick of all thes 3rd world gits spreading worms. Time for a bit of Welsh stuff :)
Resedi.b
The subject of the messages sent by the worm is one of the following:
Kev Gives great orgasms to ladeez!! -- Kev
hell is coming for u, u will be sucked into a bottomless pit!!! -- Gaz
Scientists have found traces of the HIV virus in cows milk...here is the proof -- Will
Yay. I caught a fish -- Six
I don't want to write anything but Si is bullying me. -- Jim
I want to live in a wooden house -- Arwel
Michelle still owes me �10 ... shit ! -- Si
Why have I only got cheese and onion crisps? I hate them !! -- Si
A new type of Lager / Weed variant...... sorted !
My dad not caring about my exam results -- by Michelle
Message body: heh. I tell ya this is nuts ! You gotta check it out !
When messages are sent, the worm shows the following message:
Title: %file path%%filename% is not a valid Win32 application.Message: %file path%%filename% is not a valid Win32 application.
Read more
Find out the statistics of the vulnerabilities spreading in your region on statistics.securelist.com