Incidents

Malicious encryption programs

Recently we’ve noticed several versions of one malicious program spreading. The program encrypts users files. In the last week we’ve had more requests from users to decrypt encrypted files.

An de-encryption routine has been added to antivirus databases for encrypted files. The encrypted files are detected as Virus.Win32.Gpcode.

The string PGPcoder is in the beginning of encrypted versions of files.

On PCs with encrypted files users may find files which contain warnings in Russian. In translation, the warnings say:

The contents of some of your files have been encoded using encoder ver 1.2. For decoding contact the following address: xcv789@mail.ru

Some of your files have been encoded using CRZ. For decoding contact: bnm7814@yahoo.com or ztc567@mail.ru]

Malicious encryption programs

Your email address will not be published. Required fields are marked *

 

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”.

Subscribe to our weekly e-mails

The hottest research right in your inbox