Reboot-T

This page shows details and results of our analysis on the malware Reboot-T

Overview

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.


Minimum DAT

4237 (2002-12-11)

Updated DAT

4237 (2002-12-11)

Minimum Engine

5.1.00

File Length

28,672 bytes

Description Added

2002-12-03

Description Modified

2002-12-04

Malware Proliferation

Characteristics

This trojan sets a Registry key such that the victim machine restarts upon booting Windows. In testing, it does not work as designed on NT systems.

When run on the victim machine, the following dialog box is displayed ('Installation Successful' in German):

The following Registry key is also set:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
"Sdll32" = rundll32.exe user,exitWindows

Scanning and cleaning with the indicated engine/DATs will delete the trojan and remove this Registry key.

Symptoms

Machine restarting immediately after Windows starts, coupled with the existence of the above Registry key.

Method of Infection

The trojan sets a Registry key in order to put the victim machine in a reboot loop.

Removal

All Users:
Use current engine and DAT files for detection and removal.

Manual Removal Instructions

  • Restart Windows in Safe Mode
  • Delete the files mentioned above
  • Delete the registry keys as mentioned above
  • Restart the computer

Additional Windows ME/XP removal considerations

Variants