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embargo

Ransomware Group2 claimsLast activity:

Overview

Embargo is a ransomware group associated with a ransomware-as-a-service operation and extortion through encryption and threatened data disclosure. Its ransomware and supporting tools use Rust. ESET documented a loader called MDeployer and a security-disabling tool called MS4Killer, with versions tailored to particular victim environments. Those investigations described abuse of Safe Mode and a vulnerable driver to disable endpoint protection. Microsoft has separately documented an affiliate, Storm-0501, deploying Embargo ransomware in compromised networks. The affiliate is distinct from the ransomware service it uses. These general research findings describe the operation and do not establish which techniques were used in any individual claimed attack.

Incident claims

Memorial Hospital and Manor ransomware disrupts records

Incident date: Source: ransomware.liveDiscovered:

Claim details

Embargo claimed Memorial Hospital and Manor/mh-m.org and alleged1.15TBtheft. NativeUSdomainsearchreturnedtwoapparentduplicateentries:samehospital/domain/group/volume,earliestnamedentrydiscoveredNov5,2024T09:18:46.151958Z; domainentry16:48:56.931581Z. Discoverytimeisnotproveninitialcompromise/postingtime; attack_dateunavailable. Keepthisoneexistingclaim,noduplicate. OriginalTheRecordNov5reportedthreattoleakdataNov8unlessransompaid; amountandpaymentnotestablished. OfficialFeb2025hospitalnoticeindependentlyconfirmsunauthorizeddataaccess/acquisitionbyanunknownactor,notEmbargoresponsibilityorclaimedvolume. SecurityWeekFeb10reportedsubsequentleak; actualdataset/authenticity/completenessnotverifiedandnotdownloaded. SharedEmbargoactor’sstandingprofile/threeprimaryCTIrefsverified312preserved; generictools/Storm0501affiliationnotincidentforensics. Browserransomware.liveknownsite-safetyblock,nobypass; nativeMCPmetadataandoriginalreportingused.

Wexford ransomware disrupts services and damages land records

Incident date: Source: other

Claim details

Comparitech’s Nov6,2024updated originalreport describes Embargo listing WexfordCounty on electionevening, alleging1TBtheft andpostingclaimedcredentialssample, withanundiscloseddemand andNov11deadline. Actualposting/discoveryinstantsunverified; volume, credentialauthenticity andsuccessfulfilestheftareunverifiedallegations. NamedcountyadministratorlateridentifiedEmbargo anddescribedcontactwithoutdollaramount, whileemployee-fileexposure remainedpotential,notconfirmedtheft/count. Officialsrejectedtheelectionsystemsclaim. ThreeUS-filteredname/domaintrackerqueriesreturnedzero; independentclaimreportingisnotnegated. Directhistoricaltrackerpageunavailable inweb and blockedbybrowser sitesafety; no workaround. Existingsharedactorretained; generalRust/tool/affiliatefindings are notattributedtothisincident.

Impacted organizations

Impacted locations

Sources

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