Overall Risk Level: 
W32/Bagle-AJ is a variant of I-Worm.Bagle family of worms that will display fake error messages when first executed on computer. It will spread to another computers by extracting an e-mail addresses and uses those to send a copy of spam message with W32/Bagle-AJ attached to it.
Alias: I-Worm.Bagle.am
Damage Level: Low
Systems Affected: Windows
Any Response?