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W32/Bropia.G!worm.im - Released Feb 25, 2005 - Last Updated Apr 11, 2006

Alias/es

IM-Worm.Win32.Bropia.f, W32/Bropia-M, W32/Bropia.N-net, W32/Kelvir.F-net, WORM_BROPIA.N

Detection Availability

Active DatabaseExtended Database
FortiGate
low
high
FortiClient
FortiMail N/A

Visible Symptoms

  • The following files exist in the root folder of Drive C: Beautiful Ass.pif, Kool.pif, Me & you pic!.pif, Me Pissed!.pif, sexy.pif, She Could Fit her Ass in a Teacup.pif, she's fuckin fit.pif, titanic2.jpg.pif and John Kerry as Super Chicken.scr.
  • The file Isass.exe exists in the System folder. Note that the first letter is an uppercase i and not a lowercase l.
  • Microsoft Internet Explorer is executed to open the HTML document l0l_53xy_l0l.html.

Detailed Analysis

  • Drops the file l0l_53xy_l0l.html to the current directory and opens it via Microsoft Internet Explorer. This HTML document is not malicious but just connects to the following websites:

    • http://www.freewebs.com
    • http://counter.rapidcounter.com

  • Copies itself to the System folder as Isass.exe.
  • Adds the value

    Anti = %SYSTEM%\Isass.exe, where %SYSTEM% refers to the System folder

    to the registry subkeys

    HKLM\Software\Microsoft\Windows\CurrentVersion\Run
    HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices

  • Creates several copies of itself to the root folder of Drive C. The copies have the following filenames:

    • Beautiful Ass.pif
    • Kool.pif
    • Me & you pic!.pif
    • Me Pissed!.pif
    • sexy.pif
    • She Could Fit her Ass in a Teacup.pif
    • she's fuckin fit.pif
    • titanic2.jpg.pif
    • John Kerry as Super Chicken.scr

  • Attempts to terminate the following processes:

    • taskmgr.exe
    • regedit.exe

  • Sends a copy of itself via MSN messenger to the user's contact list.

Recommended Action

Check the main screen using the web interface for your FortiGate unit to ensure that the latest AV/NIDS database has been downloaded and installed on your system - if required, enable the "Allow Push Update" option

Reference: ID - 166968