Incidents

Echoes from the past

It seems from information on the Danish web site of Medion that some of the laptops they shipped recently were infected with the boot sector virus Angelina. This virus, which infects the boot sector of floppy disks and the MBR (Master Boot Record) of hard disks, dates from the mid-1990s.

Once commonplace, such threats are now rare. And on the face of it, you might not expect viruses as old as this to be still around. But incidents like this remind us that they haven’t completely disappeared.

For those of you who haven’t had to grapple with such viruses, they infect when the machine is booted from an infected floppy disk. Of course, this typically happens by accident, when the user forgets that there’s a floppy disk in the drive. They infect at boot-up, before the operating system loads, so they will infect any PC configured to boot from the floppy drive. However, they only spread under DOS and (under specific conditions) Windows 9x. This is why they’re not very common.

So, if such threats are rare, do we detect them? Absolutely, you never know when such ‘legacy’ threats might put in an appearance.

Echoes from the past

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Reports

The leap of a Cycldek-related threat actor

The investigation described in this article started with one such file which caught our attention due to the various improvements it brought to this well-known infection vector.

Lazarus targets defense industry with ThreatNeedle

In mid-2020, we realized that Lazarus was launching attacks on the defense industry using the ThreatNeedle cluster, an advanced malware cluster of Manuscrypt (a.k.a. NukeSped). While investigating this activity, we were able to observe the complete life cycle of an attack, uncovering more technical details and links to the group’s other campaigns.

Sunburst backdoor – code overlaps with Kazuar

While looking at the Sunburst backdoor, we discovered several features that overlap with a previously identified backdoor known as Kazuar. Our observations shows that Kazuar was used together with Turla tools during multiple breaches in past years.

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