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W32/Cult.D@mm - Released Apr 02, 2003 - Last Updated Mar 13, 2007

Alias/es

I-Worm.Cult.d, W32.HLLW.Cult.C@mm, W32/Cult-C, W32/Cult.D, W32/Cult.D@mm, Worm.Cult.D

Visible Symptoms

  • Creation of the file "iexplorer.exe" into the %Windows%\System32 folder

  • Virus may be received by email in this format -

    Subject: Hi , I sent you an eCard from Blue-Mountain.com
    Body:
    To view your eCard, open the attachment

    If you have any comments or questions, please visit
    http://www.bluemountain.com/customer/index.pd

    Thanks for using BlueMountain.com.
    Attachment: BlueMountaineCard.pif

Detailed Analysis

  • Virus is 32bit with a compressed file size of 22,016 bytes

  • If virus is run, it will copy itself into the %Windows%\System32 folder as "iexplorer.exe" and then run as a process in memory

  • The virus will modify the registry to load itself at next Windows startup -

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
    "sysconfig" = iexplorer.exe

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices\
    "sysconfig" = iexplorer.exe

  • The mass-mailing code within the virus may send a copy of the virus to others with an attachment with a .PIF extension and a size of 22,016 bytes - the target address is generated at random and may or not be an actual email address - the email will be in this format -

    Subject: Hi , I sent you an eCard from Blue-Mountain.com
    Body:
    To view your eCard, open the attachment

    If you have any comments or questions, please visit
    http://www.bluemountain.com/customer/index.pd

    Thanks for using BlueMountain.com.
    Attachment: BlueMountaineCard.pif

  • Virus may attempt to connect to IRC servers via TCP port 6667 at one of two addresses -

    xman.sytes.net
    ragonx.hopto.org

  • Once connected the virus listens and awaits commands from a hacker or group of hackers which could include initiating a "ping attack" or UDP flood against a target

  • Virus contains SDBot code and has the string "sdbot 0.5b by [sd]" in its code


Reference: ID - 1056