Incidents

Fake virustotal website propagated java worm

The infection strategies using java script technology are on the agenda and that because of his status as a “hybrid”, criminals looking to expand its coverage of attack recruiting infected computers regardless of the browser or operating system you use.

In terms of criminal activities, the techniques of Drive-by-Download by injecting malicious java script in different websites, are a combo of social engineering that requires users to increasingly sharpen the senses of “detection”.

During this weekend, we encountered a fake website of the popular system analyzes suspicious files Virustotal, by Hispasec company, touted to infect users through the methods mentioned above.

A view of users, the website looks the same way as the original. However, hidden in the source the parameters needed to infect the system through a java applet through which discharge completely silent malware detected by Kaspersky Lab as Worm.MSIL.Arcdoor.ov.

The worm is developed to recruit zombies that will be part of a botnet designed primarily to perform DDoS attacks synflood, httpflood, udpflood and icmpflood. The communication focuses on a C&C that stores information obtained from the victim machine. Some of the parameters involved in the communication are:

& mode: type of DDoS attack

&botver: malware version

&pcname: name victim machine (hostname)

&winver: type and versin of operating system

Usually these attacks through a centralized hub from which the attacker manages malicious maneuvers using web applications DDoS Framework such as N0ise (used in this case), Cythosia, or NOPE. Such applications have a high impact and demand in terms of development, especially since the European zone of Germany.

Kaspersky Lab detects this threat proactive and continues the investigations into these criminal activities.

Fake virustotal website propagated java worm

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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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