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Jim Walter

Jim Walter is a Senior Threat Researcher at SentinelOne focusing on evolving trends, actors, and tactics within the thriving ecosystem of cybercrime and crimeware. He specializes in the discovery and analysis of emerging cybercrime "services" and evolving communication channels leveraged by mid-level criminal organizations. Jim joined SentinelOne following ~4 years at a security start-up, also focused on malware research and organized crime. Previously, he spent over 17 years at McAfee/Intel running their Threat Intelligence and Advanced Threat Research teams.
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The Good, the Bad and the Ugly in Cybersecurity – Week 20

The Good, the Bad and the Ugly | 5 minute read
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Technical Overview Of NEMTY Successor Nefilim Nephilim Ransomware 4
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Crimeware

Meet NEMTY Successor, Nefilim/Nephilim Ransomware

Jim Walter / May 4, 2020

Ransomware families NEMTY, Nefilim and Nephilim continue to evolve and merge, taking on aspects of other successful variants that aim to encrypt and extort.

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The Good, the Bad and the Ugly in Cybersecurity – Week 17

The Good, the Bad and the Ugly | 4 minute read
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Maze Ransomware Update  Extorting And Exposing Victims 2
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Crimeware

Maze Ransomware Update: Extorting and Exposing Victims

Jim Walter / April 17, 2020

Maze ransomware doesn’t just demand payment for a decryptor but exfiltrates victim data and threatens to leak it publicly if the target doesn’t pay up.

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The Good, the Bad and the Ugly in Cybersecurity – Week 14

The Good, the Bad and the Ugly | 4 minute read
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Looking on the Bright Side of Coronavirus: Impact on Low-to-Mid-Tier Criminals and Vendors

For CISO/CIO | 4 minute read
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The Good, the Bad and the Ugly in Cybersecurity – Week 11

The Good, the Bad and the Ugly | 4 minute read
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DPRK HiddenCobra Update  North Korean Malicious Cyber Activity 1
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Advanced Persistent Threat

DPRK Hidden Cobra Update: North Korean Malicious Cyber Activity

Jim Walter / February 25, 2020

New threat intelligence on the ever-expanding toolset of North Korean APT Hidden Cobra (Lazarus) including IoCs for RATs, beacons, persistence and more.

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The Good, the Bad and the Ugly in Cybersecurity – Week 8

The Good, the Bad and the Ugly | 4 minute read
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The Good, the Bad and the Ugly in Cybersecurity – Week 5

The Good, the Bad and the Ugly | 4 minute read
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SentinelLabs

In the era of interconnectivity, when markets, geographies, and jurisdictions merge in the melting pot of the digital domain, the perils of the threat ecosystem become unparalleled. Crimeware families achieve an unparalleled level of technical sophistication, APT groups are competing in fully-fledged cyber warfare, while once decentralized and scattered threat actors are forming adamant alliances of operating as elite corporate espionage teams.

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