el link k pone el muestra informacion acerca del virus "inzae". no he navegado mas por su pagina que eso.
el virus inzae NO BORRA archivos, solo ENVIA EMAILS.
segun symantec y mcafee no hay ningun virus que borre archivos de la manera que han descrito desde hace varias semanas. (edit: he mirado las ultimas semanas, pero diria que no hay ningun virus asi desde hace MESES o mas)
[quote name='http://securityresponse.symantec.com/avcenter/venc/data/w32.inzae.a@mm.html']W32.Inzae.A@mm
Category 1
Discovered on: November 22, 2004
Last Updated on: November 23, 2004 03:20:28 PM
W32.Inzae.A@mm is a mass-mailing worm that uses its own SMTP engine to spread by sending itself as an email attachment.
The threat is written in the Visual Basic v6.0 programming language. Some components of the threat is written in the Visual C++ programming language.
Also Known As: W32/Tasin.A.worm [Panda]
Type: Worm
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
protection
# Virus Definitions (Intelligent Updater) *
November 23, 2004
# Virus Definitions (LiveUpdate™) **
November 24, 2004
*
Intelligent Updater definitions are released daily, but require manual download and installation.
Click here to download manually.
**
LiveUpdate virus definitions are usually released every Wednesday.
Click here for instructions on using LiveUpdate.
threat assessment
Wild
* Number of infections: 0 - 49
* Number of sites: 0 - 2
* Geographical distribution: Low
* Threat containment: Easy
* Removal: Easy
Threat Metrics
Low Medium Medium
Wild:
Low
Damage:
Medium
Distribution:
Medium
Damage
* Payload Trigger: n/a
* Payload: n/a
o Large scale e-mailing: Sends email to the addresses collected from an infected computer.
o Deletes files: n/a
o Modifies files: n/a
o Degrades performance: Mass-mailing may clog mail servers or degrade network performance.
o Causes system instability: n/a
o Releases confidential info: n/a
o Compromises security settings: n/a
Distribution
* Subject of email: Varies
* Name of attachment: Varies with a .zip extension.
* Size of attachment: n/a
* Time stamp of attachment: n/a
* Ports: n/a
* Shared drives: n/a
* Target of infection: n/a
technical details
When W32.Inzae.A@mm is executed, it does the following:
1. Copies itself as the following:
* %System%\svchosl.pif
* %System%\m.zip
Note: %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
2. Adds the value:
"Svchost"="%System%\svchosl.pif"
to the registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
so that the worm runs when Windows starts.
3. Creates the following files:
* %System%\inzax.exe
* %System%\sw.exe
* %System%\sx.exe
* %System%\sz.exe
4. Displays the following messages on screen including a counter from 0 to 50:
Title: Wolas
Message: Pulse aceptar para seguir..
Title: Intro
Message:Este juego solo trata de responder unas preguntas...Y si se aciertan todas...Pues ustd se llevará el premio xDDD. Pulse aceptar
Title: Final..
Message: Ya casi estamos listos para empezar si ustd lo está pulse aceptar ...
Title: Te jodes y cayao
Message: Ahora por tonto contemos hasta cincuenta porque a mi me da la GANA!!! QUE PAISA?
Title: Y toma y dale y mas de lo mismo xDDD
Message: Todos Juntos :> <digits>etc.
The last message displays the following text in a white window that occupies the entire screen:
Pulse CONTROL + 0 + 8 + N + 6 PARA PASAR VER LAS FOTOS SIGUIENTES...
5. Copies the following files to the C, D, E and F drives:
* codm
* extasis8.pif
* inzae.pif
* ph003.pif
* rd2_roberto.pif
* simbolic3.pif
* sin_mas_menos.pif
6. Sends a HTTP GET request to a web site on the domain xxxxx.org, to test if the machine is connected to Internet:
7. Uses its own SMTP engine to send email messages to any addresses found on the infected computer.
The email may have the following characteristics:
From: (Spoofed)
Subject: (One of the following)
* re:Amor verdadero
* re:Como el aire...
* re:Crees que puede ser verdad?
* re:Déjate de rollos y vivé!!!
* re:Eso con queso rima con...xD
* re:La Luna
* re:Neptuno y Mercurio
* re:Pisología
* re:Voodoo un tanto ps...
* re:xD no me lo puedo creer!!
Message body: (One of the following)
o No veas que cosas xD,luego me cuentas,chao.
o Crees en el amor de verdad?,miralo y ya hablamos,ciaooo
o Mira lo que te mando y ya verás que los detalles mas pequeños son los que importan,ciaoo
o Test para ver si andas bien de las neuronassss!xD,luego hablamos, chao
o Qué relación tienen estos planetas?,miralo y luego me cuentas,chao.
o Esa moribunda y solitaria Luna,Impresionante!chao.
o Será cierta la magia negra?,sal de dudas y ya me cuentas,chao.
o No comment,xDD,Nos vemos!!
o Renvíalo a todo que es que se meannn xD,nos vemos!
Attachment: (One of the following)
o D-Incógnito.zip
o EL_rechazo.zip
o Love-Me.zip
o Moon(Luna).zip
o My life(Mi vida).zip
o Para-Brisas.zip
o Planetario.zip
o Psíquico-Mix.zip
o Rimaz.zip
o Voodoo!.zip
The underneath file name that contains a copy of the worm is one of the following:
o inzae.pif
o ph003.pif
o rd2_roberto.pif
o simbolic3.pif
o extasis8.pif
o sin_mas_menos.pif
recommendations
Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":
* Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates.
* If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
* Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services (for example, all Windows-based computers should have the current Service Pack installed.). Additionally, please apply any security updates that are mentioned in this writeup, in trusted Security Bulletins, or on vendor Web sites.
* Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
* Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files.
* Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media.
* Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
removal instructions
The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.
1. Disable System Restore (Windows Me/XP).
2. Update the virus definitions.
3. Restart the computer in safe mode or VGA mode.
4. Run a full system scan and delete all the files detected as W32.Inzae.A@mm.
5. Delete the value that was added to the registry.
For specific details on each of these steps, read the following instructions.
1. To disable System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.
Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.
Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.
For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:
* "How to disable or enable Windows Me System Restore"
* "How to turn off or turn on Windows XP System Restore"
Note: When you are completely finished with the removal procedure and are satisfied that the threat has been removed, re-enable System Restore by following the instructions in the aforementioned documents.
For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article, "Antivirus Tools Cannot Clean Infected Files in the _Restore Folder," Article ID: Q263455.
2. To update the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:
* Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate).
* Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted daily. You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater).
The Intelligent Updater virus definitions are available: Read "How to update virus definition files using the Intelligent Updater" for detailed instructions.
3. To restart the computer in Safe mode or VGA mode
Shut down the computer and turn off the power. Wait for at least 30 seconds, and then restart the computer in Safe mode or VGA mode.
* For Windows 95, 98, Me, 2000, or XP users, restart the computer in Safe mode. For instructions, read the document, "How to start the computer in Safe Mode."
* For Windows NT 4 users, restart the computer in VGA mode.
4. To scan for and delete the infected files
1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
* For Norton AntiVirus consumer products: Read the document, "How to configure Norton AntiVirus to scan all files."
* For Symantec AntiVirus Enterprise products: Read the document, "How to verify that a Symantec Corporate antivirus product is set to scan all files."
2. Run a full system scan.
3. If any files are detected as infected with W32.Inzae.A@mm, click Delete.
5. To delete the value from the registry
Important: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry," for instructions.
1. Click Start > Run.
2. Type regedit
Then click OK.
3. Navigate to the key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
4. In the right pane, delete the value:
"Svchost"="%System%\svchosl.pif"
5. Exit the Registry Editor.[/quote]
Este tema ha sido editado por zandadoum: 23 November 2004 - 06:40 PM