Incidents

Fresh Bagles ahead

Two new Bagle variants have been spotted today. Both are 36352 bytes in size and are very similar in operation. Actually, the second one looks like a repack of the first variant in order to avoid detection. Both work through a downloader component, which connects to a set of websites and attempts to fetch a file. Just as it usually happens with Sober, the author may choose to upload a trojan with unexepected effects at the “update” URLs. We are currently monitoring them for any changes.

Below you can find the MD5’s for these two new variants:

(Email-Worm.Win32.Bagle.bo)

f4271a7bd37b7502ecab0ec2964d87c6 – first sample
71379e8529c54c80ead31f5499e3406b – second sample

We released detection for the most recent version at 18:59.

Fresh Bagles ahead

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Reports

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.

Lazarus covets COVID-19-related intelligence

As the COVID-19 crisis grinds on, some threat actors are trying to speed up vaccine development by any means available. We have found evidence that the Lazarus group is going after intelligence that could help these efforts by attacking entities related to COVID-19 research.

Sunburst: connecting the dots in the DNS requests

We matched private and public DNS data for the SUNBURST-malware root C2 domain with the CNAME records, to identify who was targeted for further exploitation. In total, we analyzed 1722 DNS records, leading to 1026 unique target name parts and 964 unique UIDs.

What did DeathStalker hide between two ferns?

While tracking DeathStalker’s Powersing-based activities in May 2020, we detected a previously unknown implant that leveraged DNS over HTTPS as a C2 channel, as well as parts of its delivery chain. We named this new malware “PowerPepper”.

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