Incidents

Twitter down

As the previous attacks was reaching peak activity, Twitter went offline.

The guys at Twitter are yet unsure of the cause of the problem (http://status.twitter.com/post/157160617/site-is-down).

Most likely the Koobface attack and Twitter going down at the same time is just a coincidence – but hey, there’s a good part about this story too: at least we’re not seeing new malicious tweets anymore.

UPDATE:Seems Twitter has changed its IP address during the downtime we’re currently seeing. The server is responsive to pings, but not HTTP requests. Signs of a DDoS attack?

UPDATE 2: Twitter has confirmed it is “fighting against” a denial-of-service attack.

Twitter down

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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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