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Discovered:
- June 29, 2011
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Updated:
- June 29, 2011 10:08:26 AM
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Also Known As:
- Troj/Popureb-A [Sophos], Troj/Popureb-B [Sophos], TROJ_POPUREB.SMB [Trend], Troj/PopKmem-A [Sophos]
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Type:
- Trojan
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Infection Length:
- 84,992 bytes
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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
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Initial Rapid Release version June 29, 2011 revision 001
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Latest Rapid Release version May 20, 2013 revision 038
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Initial Daily Certified version June 29, 2011 revision 002
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Latest Daily Certified version May 21, 2013 revision 002
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Initial Weekly Certified release date June 29, 2011
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat Assessment
Wild
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Wild Level: Low
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Number of Infections: 0 - 49
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Number of Sites: 0 - 2
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Geographical Distribution: Low
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Threat Containment: Easy
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Removal: Easy
Damage
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Damage Level: Medium
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Payload: Downloads files.
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Modifies Files: Modifies the MBR.
Writeup By: Masaki Suenaga, Karthik Servaraj, Piotr Krysiuk, Stephen Doherty
