Incidents

Not just Twitter, Jaiku too

Yesterday Arbor Networks reported that malware (which we detect as Trojan-Banker.Win32.Banker.alwa and Trojan-Banker.Win32.Banker.alwe) was using Twitter as a control system to command infected machines.

But it’s not just Twitter being used by this malware, but Jaiku as well.

You might never have heard of Jaiku, but it’s very similar to Twitter. And it’s being used in the same way, with someone sending commands encrypted in Base64 to an account:

Decrypting some lines we can see two links:

http://bit.ly/******
http://bit.ly/******

that lead to a page with more Base64 code:

This code gets downloaded by the malware, decrypted and saved as an infection component, updating the malware sitting on compromised machines.

So Brazilian cybercriminals are right on the money when it comes to finding new attack vectors; although Jaiku isn’t anywhere near as popular as Twitter, this attack shows they’re out to find as many victims as they can.

Not just Twitter, Jaiku too

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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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