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  3. Trojan.Alworo


Risk Level 1: Very Low

June 29, 2011
June 29, 2011 10:08:26 AM
Also Known As:
Troj/Popureb-A [Sophos], Troj/Popureb-B [Sophos], TROJ_POPUREB.SMB [Trend], Troj/PopKmem-A [Sophos]
Infection Length:
84,992 bytes
Systems Affected:
Windows 2000, Windows 7, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP
Trojan.Alworo is a Trojan horse that downloads configuration files from the Internet and displays advertisements. It also modifies the master boot record (MBR) to hide its components.

Antivirus Protection Dates

  • Initial Rapid Release version June 29, 2011 revision 001
  • Latest Rapid Release version June 24, 2014 revision 006
  • Initial Daily Certified version June 29, 2011 revision 002
  • Latest Daily Certified version July 17, 2013 revision 022
  • Initial Weekly Certified release date June 29, 2011
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Masaki Suenaga, Karthik Servaraj, Piotr Krysiuk, Stephen Doherty

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