Sophos

Troj/Istsvc-A

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 10 April 2005 14:53:28 (GMT)
Detected by All Sophos products
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Action

Please follow the instructions for removing Trojans.

Windows NT/2000/XP/2003

In Windows NT/2000/XP/2003 you will also need to edit the following registry entry. The removal of this entry is optional in Windows 95/98/Me. Please read the warning about editing the registry.

At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.

Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.

Locate the HKEY_LOCAL_MACHINE entry:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
<random name>
<path to Trojan>

and delete it if it exists.

Close the registry editor.

More Information

Troj/Istsvc-A is a Trojan downloader for the Windows platform.

When installed Troj/Istsvc-A periodically attempts to download and run files from the Internet while running in the background as a service process.

Troj/Istsvc-A then creates the following registry entry so as to run itself on computer logon:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
<random name>
<path to Trojan>

Troj/Istsvc-A also creates the following registry entry:

HKCU\Software\IST\

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