The Week in Ransomware – August eleventh 2023 – Concentrating on Healthcare | Digital Noch

The Week in Ransomware – August eleventh 2023 – Concentrating on Healthcare | Digital Noch

Whereas some ransomware operations declare to not goal hospitals, one comparatively new ransomware gang named Rhysida does not appear to care.

Rhysida launched in Might 2023, when it rapidly began to make a reputation for itself because it made indiscriminate assaults on hospitals, the enterprise, and even authorities companies.

The group first got here to notoriety after attacking the Chilean Military (Ejército de Chile) and leaking stolen knowledge.

Now the ransomware gang is making the headlines attributable to its focusing on of healthcare, with the group believed to be behind the assaults on Prospect Medical Group, impacting 17 hospitals and 166 clinics throughout the US.

This led to a flurry of stories launched by the U.S. Division of Well being and Human Companies, Pattern Micro, Cisco Talos, and Test Level Analysis.

We additionally noticed extra stories on ransomware about TargetCompany, code leaks impacting the RaaS ecosystem, and a brand new menace actor utilizing a personalized model of Yashma ransomware.

In different information, we proceed to see the fallout from Clop’s MOVEit data-theft assaults, with Missouri’s Division of Social Companies warning that knowledge was stolen from IBM’s MOVEit server.

Lastly, Europol and the U.S. Division of Justice introduced the takedown of the LOLEKHosted bulletproof internet hosting supplier, saying that one of many arrested admins facilitated Netwalker ransomware assaults by internet hosting storage servers for the gang.

Contributors and those that supplied new ransomware info and tales this week embrace: @Seifreed, @struppigel, @Ionut_Ilascu, @serghei, @LawrenceAbrams, @malwrhunterteam, @billtoulas, @demonslay335, @BleepinComputer, @HHSGov, @TrendMicro, @TalosSecurity, @_CPResearch_, @IRS_CI, and @pcrisk.

August seventh 2023

New menace actor targets Bulgaria, China, Vietnam and different nations with personalized Yashma ransomware

Talos assesses with excessive confidence that this menace actor is focusing on victims in English-speaking nations, Bulgaria, China and Vietnam, because the actor’s GitHub account, “nguyenvietphat,” has ransomware notes written in these nations’ languages. The presence of an English model may point out the actor intends to focus on a variety of geographic areas.

Code leaks are inflicting an inflow of recent ransomware actors

Ransomware gangs are constantly rebranding or merging with different teams, as highlighted in our 2022 12 months in Evaluation, or these actors work for a number of ransomware-as-a-service (RaaS) outfits at a time, and new teams are all the time rising.

TargetCompany Ransomware Abuses FUD Obfuscator Packers

We discovered energetic marketing campaign deployments combining distant entry trojan (RAT) Remcos and the TargetCompany ransomware earlier this yr. We in contrast these deployments with earlier samples and located that these deployments are implementing totally undetectable (FUD) packers to their binaries. By combining telemetry knowledge and exterior menace looking sources, we had been in a position to collect early samples of those in improvement. Just lately, we discovered a sufferer on which this system was deployed and focused particularly at.

New STOP ransomware variants

PCrisk discovered new STOP ransomware variants that append the .yyza and .yytw extensions.

New Dharma ransomware variant

PCrisk discovered a brand new Dharma variant that appends the .GPT extension.

August eighth 2023


The Rhysida ransomware group was first revealed in Might this yr, and since then has been linked to a number of impactful intrusions, together with an assault on the Chilean Military. Just lately the group was additionally tied to an assault in opposition to Prospect Medical Holdings, affecting 17 hospitals and 166 clinics throughout the US. After this assault, the US Division of Well being and Human Companies outlined Rhysida as a big menace to the healthcare sector.

What Cisco Talos is aware of concerning the Rhysida ransomware

Cisco Talos is conscious of the current advisory printed by the U.S. Division of Well being and Human Companies (HHS) warning the healthcare trade about Rhysida ransomware exercise.

New Xorist variant

PCrisk discovered a brand new Xorist ransomware variant that appends the .PrOToN extension and drops a ransom notice named HOW TO DECRYPT FILES.txt.

August ninth 2023

Missouri warns that well being data was stolen in IBM MOVEit knowledge breach

Missouri’s Division of Social Companies warns that protected Medicaid healthcare info was uncovered in an information breach after IBM suffered a MOVEit knowledge theft assault.

Rhysida ransomware behind current assaults on healthcare

The Rhysida ransomware operation is making a reputation for itself after a wave of assaults on healthcare organizations has compelled authorities companies and cybersecurity firms to pay nearer consideration to its operations.

An Overview of the New Rhysida Ransomware Concentrating on the Healthcare Sector

On August 4, 2023, the HHS’ Well being Sector Cybersecurity Coordination Heart (HC3) launched a safety alert a few comparatively new ransomware known as Rhysida (detected as Ransom.PS1.RHYSIDA.SM), which has been energetic since Might 2023. On this weblog entry, we are going to present particulars on Rhysida, together with its targets and what we find out about its an infection chain.

August tenth 2023

New Harward ransomware

PCrisk discovered a brand new ransomware variant that appends the .harward extension.

August eleventh 2023

LOLEKHosted admin arrested for aiding Netwalker ransomware gang

Police have taken down the Lolek bulletproof internet hosting supplier, arresting 5 people and seizing servers for allegedly facilitating Netwalker ransomware assaults and different malicious actions.

New MedusaLocker variant

PCrisk discovered a brand new ransomware variant that appends the .alock extension.

That is it for this week! Hope everybody has a pleasant weekend!

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