Small.DDY

Threat description

Details

CATEGORYMalware
TYPETrojan-Downloader
DATE DISCOVEREDAugust 11, 2006

Summary

Small.DDY is a trojan downloader that attempts to secretly download and execute a file from a malicious website.See below for details.



Removal

Automatic action

Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.

More scanning & removal options

More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

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Technical Details

Small.DDY is an FSG packed malware that injects malicious code into svchost.exe. It does so by creating a new instance of svchost.exe using the malware as its parameter. After execution it deletes the executable file.The injected malware code checks for an Internet connection every 250ms. Once an Internet connection has been established, it will attempt to download and execute a file from the following URL:

  • https://81.95.146.107/[REMOVED].exe

The downloaded file is saved in the Windows directory using the filename: au.exe.

Detection

F-Secure Anti-Virus detects this malware with the following updates:

Detection Type: PC

Database: 2006-07-10_02

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