Doel Santos, Author at Unit 42

A conceptual image representing ransomware, including HelloXD.

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Exposing HelloXD Ransomware and x4k

By Daniel Bunce and Doel Santos
June 10, 2022 at 6:00 PM

15 min. read

A conceptual image representing the REvil threat actors discussed in the post.

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Understanding REvil: REvil Threat Actors May Have Returned (Updated)

By Doel Santos and John Martineau
June 3, 2022 at 1:00 PM

12 min. read

A conceptual image representing ransomware, such as the BlackCat ransomware discussed here.

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Threat Assessment: BlackCat Ransomware

By Amanda Tanner, Alex Hinchliffe and Doel Santos
January 27, 2022 at 6:00 AM

10 min. read

A conceptual image representing ransomware, including the emerging ransomware groups covered here: AvosLocker, Hive, HelloKitty and LockBit 2.0.

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Ransomware Groups to Watch: Emerging Threats

By Doel Santos and Ruchna Nigam
August 24, 2021 at 3:00 AM

11 min. read

A conceptual image representing Prometheus ransomware

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Prometheus Ransomware Gang: A Group of REvil?

By Doel Santos
June 9, 2021 at 3:00 AM

9 min. read

A conceptual image representing ransomware, such as the Clop ransomware family discussed in this threat assessment.

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Threat Assessment: Clop Ransomware

By Doel Santos
April 13, 2021 at 8:00 AM

6 min. read

Conceptual image illustrating Egregor ransomware.

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Threat Assessment: Egregor Ransomware

By Doel Santos, Brittany Barbehenn and Robert Falcone
December 8, 2020 at 6:00 PM

5 min. read

Conceptual image illustrating Ryuk Ransomware

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Threat Assessment: Ryuk Ransomware

By Brittany Barbehenn, Doel Santos and Brad Duncan
October 29, 2020 at 5:45 PM

9 min. read

Conceptual image illustrating WastedLocker ransomware

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Threat Assessment: WastedLocker Ransomware

By Alex Hinchliffe, Doel Santos, Adrian McCabe and Robert Falcone
July 30, 2020 at 6:00 AM

4 min. read

35,402

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Threat Assessment: EKANS Ransomware

By Alex Hinchliffe and Doel Santos
June 26, 2020 at 6:00 AM

5 min. read

24,199

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Threat Assessment: Hangover Threat Group

By Doel Santos and Alex Hinchliffe
June 3, 2020 at 7:00 PM

8 min. read

Conceptual image representing Maze ransomware.

33,403

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Threat Brief: Maze Ransomware

By Brittany Barbehenn and Doel Santos
May 8, 2020 at 6:00 AM

5 min. read

Posts created by: Doel Santos

Exposing HelloXD Ransomware and x4k

Understanding REvil: REvil Threat Actors May Have Returned (Updated)

Threat Assessment: BlackCat Ransomware

Ransomware Groups to Watch: Emerging Threats

Prometheus Ransomware Gang: A Group of REvil?

Threat Assessment: Clop Ransomware

Threat Assessment: Egregor Ransomware

Threat Assessment: Ryuk Ransomware

Threat Assessment: WastedLocker Ransomware

Threat Assessment: EKANS Ransomware

Threat Assessment: Hangover Threat Group

Threat Brief: Maze Ransomware

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