Incidents

2+2=89?

This week we added another unusual detection – detection for a calculator virus.

Virus.TI.Tigraa.a is a memory resident virus, and in the best tradition of DOS viruses, it’s a mere 492 bytes in size. It works on Texas Instruments TI-89 graphing calculators (the TI-89, TI-89 Titanium, and the Voyage 200 which will run most programs for the TI-89) with the Motorola 68000 processor. The virus is designed to clear the screen and then display a message saying ‘t89.GAARA’.

Of course, Tigraa.a is classic proof of concept code. It’ll only work on individual calculators, and can’t spread. But nevertheless, it’s created another entry in the roll call of potentially infectable devices.

2+2=89?

Your email address will not be published. Required fields are marked *

 

Reports

APT trends report Q3 2022

This is our latest summary of advanced persistent threat (APT) activities, focusing on events that we observed during Q3 2022.

APT10: Tracking down LODEINFO 2022, part I

The first part of this report will provide technical analysis of the new infection methods such as SFX files and DOWNIISSA, a new downloader shellcode used to deploy the LODEINFO backdoor.

Subscribe to our weekly e-mails

The hottest research right in your inbox