Ransomware Resource Sheet Variant in focus: Files that suddenly acquire the “.eur” extension Technical Breakdown 1. File Extension & Renaming Patterns Confirmed extension: .eur (always lower-case, preceded by the original file name and a dot). Classic pattern observed: ORIGINAL_NAME.id-[8-hex-chars].email-[contact1;contact2].eur Example: budget.xlsx.id-A1B2C3D4.email-[[email protected]][[email protected]].eur Some builds omit the ID block or show only one mailbox. The email addresses…

Ransomware Briefing for the “.eucy” Strain (Last reviewed: 2024-06-04) TECHNICAL BREAKDOWN 1. File Extension & Renaming Patterns Extension appended: .eucy (lower-case, leading dot) Renaming convention: Original: Annual_Report.xlsx After attack: Annual_Report.xlsx.id[XXXXXXXX].[<attacker-email>].eucy XXXXXXXX = 8-byte victim ID (hex) generated from system hash <attacker-email> varies by wave, e.g., [email protected], [email protected], [email protected] Path is left intact – files are…

Euclid (a.k.a. “EuclidCrypt”) – Community Defense Brief Last revised: 2024-05-28 TECHNICAL BREAKDOWN 1. File extension & renaming patterns Confirmed extension appended: .euclid (lower-case) Renaming convention: – Original name → <original_name>.<original_extension>.euclid – Example: Report_Q1.xlsx becomes Report_Q1.xlsx.euclid – NO e-mail address, victim-ID, or random hex block is inserted between the two final dots (useful for quick triage…

Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: The current ransomware wave appends the literal suffix .eu (lowercase) to every encrypted object. Example: Annual_Report.xlsx → Annual_Report.xlsx.eu No second extension, prefix, or randomised UID is added, so victims frequently do not notice the change until they try to open a file. Renaming…

Ransomware Profile: “.ETY” (a.k.a. Ety, EtyProject, ETY-1992, “EternityAuto”) Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: .ety Renaming Convention: Original name: Quarterly_Report.xlsx After encryption: Quarterly_Report.xlsx.ety Deep variant adds an additional token: Quarterly_Report.xlsx.[UUID-like-machine-ID].ety Ransom note is dropped as: README_TO_RESTORE.ety.txt (or !ETY_RESTORE!.hta on desktops). 2. Detection & Outbreak Timeline Approximate Start Date: First…

Community Threat Dossier – “ETOLS” Ransomware (File extension: .etols) TECHNICAL BREAKDOWN 1. File Extension & Renaming Patterns Exact marker: .etols is appended as a second extension (e.g., Quarterly_Report.xlsx.etols). Typical convention: OriginalName . [original-extension] . etols – the malware does not wipe the original name or extension; it simply tacks “.etols” to the end, making quick…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The Ethan ransomware appends the literal string “.ethan” as a secondary extension, leaving the original file extension intact (e.g., Budget2024.xlsx.ethan, presentation.pptx.ethan). Renaming Convention: Files keep their original base name + original extension, then “.ethan” is simply tacked on. No email address, ransom code,…

ETH Ransomware Intelligence Brief (extension used by several unrelated strains – below is the consolidated view of every family observed in-the-wild that re-names files to “.eth”) Technical Breakdown 1. File Extension & Renaming Patterns Extension applied: .eth (lowercase; occasionally observed as .ETH) Renaming convention – Most strains: <original_name>.<ID>.[E-MAIL1].eth Example: Project.xlsx.id-A913D72B.[[email protected]].eth – Early Dharma fork (2019)…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: Files are given the double extension .eternity (lower-case). Example: Project_X.docx.eternity Renaming Convention: The malware keeps the original name and primary extension intact, then simply appends .eternity to every encrypted object. Network shares are processed the same way, so mapped drives show the extra…

Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: .eternal (lower-case, appended right after the original extension → invoice.xlsx.eternal). Renaming Convention: The malware preserves the original file name and simply concatenates “.eternal”. No e-mail address, random hex-string, or campaign-ID is inserted into the name (a trait that helps spot it quickly in…