Yipper is a family of email stealing trojans written in Visual Basic. All 3 currently known variants appeared on 6th of May, 2003. These trojans do not install themselves to system, they only collect email addresses and send them to 2 pre-defined email addresses in Israel.
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This trojan variant sends stolen emails to <email@example.com> email address. The message is sent with 'Hi' text in a subject line. The message body contains entries from infected user's Outlook Address Book.
This trojan variant was sent to several people in email messages as FindMyMatch.exe attachment. The trojan sends stolen emails to <firstname.lastname@example.org> email address. The message is sent with 'NewWorld' in a subject. The body contains encrypted entries from infected user's Outlook Address Book.
The B variant keeps its copy in memory while A and C variants exit after they send out email lists.
This trojan variant is very close to Yipper.A variant. It sends stolen emails to <email@example.com> email address. The message is sent with 'Hi' in a subject line. The body contains entries from infected user's Outlook Address Book.
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