At least two security vendors have issued alerts for Troj_Dropper.IAW, a Trojan that arrives as attachment to email messages spammed by another malware or a malicious user.

It may be dropped by other malware or downloaded unknowingly by a user when visiting malicious Web sites.

It creates folders and drops files.


It creates a registry entry to enable its automatic execution at every system startup. It creates also registry key(s) as part of its installation routine. It modifies registry entry(ies) as part of its installation routine.

Technical details can be found at this Trend Micro page.

According to Proland Software, which also issued an alert, W32/Dropper.IAW is a Trojan that will infect Windows systems.

The Trojan arrives as an attachment to email messages spammed by another malware or a malicious user. It may also be dropped by other malware or downloaded unknowingly by a user upon visiting malicious Web sites.

Upon execution, the Trojan copies several files in Windows Temp\spoolsv folder. View them and other information can be found at this Proland Software page.