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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.
New GBU Weekly
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The Good, the Bad and the Ugly in Cybersecurity – Week 22

Jim Walter / May 28, 2021

Another Darknet marketplace gets shuttered by cyber cops, Bose tells all about its data breach, and Belgian ministry becomes victim of an espionage attack.

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The Good, the Bad and the Ugly in Cybersecurity – Week 19

Jim Walter / May 7, 2021

Cyber cops take down Boystown child porn site, DDoS attack knocks hundreds of public institutions offline, and slew of flaws in Dell driver affect millions.

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

Jim Walter / April 2, 2021

DeepDotWeb operators face 20 years in jail, threat actors set up entire fake call center to distribute malware, and FIN11 dump Shell Accellion leak files.

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Avaddon RaaS   Breaks Public Decryptor Continues On Rampage 7
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Crimeware

Avaddon RaaS | Breaks Public Decryptor, Continues On Rampage

Jim Walter / April 1, 2021

Unbreakable encryption, a data leak site and threats of DDoS attacks, Avaddon has all the tricks of a modern RaaS. And now version 2 is on the way.

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The Good, the Bad and the Ugly in Cybersecurity – Week 11

Jim Walter / March 12, 2021

GandCrab affiliate gets busted by cyber cops, more attackers swarm on flawed Exchange servers, and IoT hack allows sneaks to view healthcare, prison cameras.

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HelloKitty Ransomware Lacks Stealth But Still Strikes Home 3
labs
Crimeware

HelloKitty Ransomware Lacks Stealth, But Still Strikes Home

Jim Walter / March 8, 2021

HelloKitty lacks the stealth of Ryuk, REvil and Conti, but has still struck some notable targets, including CEMIGO. Ransomware overview and IoCs here.

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

Jim Walter / February 19, 2021

Cops bust Egregor affiliate as RaaS starts to fade, Lazarus continues its crypto coin stealing spree and DoppelPaymer claims scalp of another household name

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Zeoticus 2.0   Ransomware With No C2 Required 4
labs
Crimeware

Zeoticus 2.0 | Ransomware With No C2 Required

Jim Walter / February 3, 2021

Zeoticus is a Windows-specific ransomware that can execute fully offline with no callback to a C2, making network activity detection rules redundant.

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Blog Weekly Weekly
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The Good, the Bad and the Ugly in Cybersecurity – Week 5

Jim Walter / January 29, 2021

Europol & friends conduct massive disruption of Emotet, ransomware operators add DDoS to their repertoire, and two privilege escalation bugs found in sudo.

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The Good, the Bad and the Ugly in Cybersecurity – Week 2

Jim Walter / January 8, 2021

Man behind mass sextortion campaign jailed for 11 years, Babuk is 2021's first new ransomware entry, and scammers impersonate Australian cyber crime unit.

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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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