Bropia.C is a minor variant of Bropia.A. It uses MSN messenger for spreading by sending itself as "LOL.scr", "Webcam.pif", "hahahaha.pif", "me_2005.pif" or "sister.pif". It also drops a variant of Rbot on the infected computer.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
When run, the worm checks files
winexec32.exe adaware32.exe VB6.EXE iexplore.exe
If these files are not found, it drops file "cz.exe" and executes it. This file is a variant of Rbot which is detected generically by FSAV.Brobia.C can also disable mouse right button.
The worm copies itself in C-directory using one of the following filenames:
LOL.scr Webcam.pif hahahaha.pif me_2005.pif sister.pif
Then it attempts to send this file using MSN messenger to all active MSN contacts. The MSN messenger window has to be open on the infected computer's desktop for this to be successful.
F-Secure Anti-Virus detects Brobia.C with the following update:
Technical Details: Jarkko Turkulainen, Jan 26th, 2005