Technical & Response Guide for the “[email protected]” Ransomware Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: This strain appends the double-tagged extension .mkmk (the family marker) after the attacker’s e-mail address, so the final suffix for every encrypted file is [email protected] Renaming Convention: Original path → {original-filename}.{original-extension}[email protected] (e.g., 2023-Finance.xlsx becomes [email protected]).…

Technical Breakdown: File Extension & Renaming Patterns • Confirmation of File Extension: The ransomware appends “.adam” (lowercase) to every encrypted file. • Renaming Convention: Original filenames remain intact except for the trailing “.adam” suffix—e.g., “AnnualReport.xlsx” becomes “AnnualReport.xlsx.adam”. No e-mail addresses, random IDs, or hexadecimal blocks are inserted. Detection & Outbreak Timeline • Approximate Start Date/Period:…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The ransomware appends the fixed string “.adame” to every encrypted file (no random components). Example: Proposal.docx → Proposal.docx.adame Renaming Convention: Original file is AES encrypted. A single static extension is appended immediately after the last dot, creating a double-extension (e.g., .pdf.adame). No email…

Technical Breakdown File Extension & Renaming Patterns Exact file extension: ADAM Renaming convention: File names are converted to lowercase (Report_March.xlsx → report_march.xlsx.adam). In some variants files are reset merely to a sequence number followed by .ADAM. Original file-hash checksum accompanying each encrypted file is stored in README-ADAM-RECOVER.txt in the same directory. Detection & Outbreak Timeline…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The ransomware known as Adair appends the exact file extension .adair to every file it encrypts. Renaming Convention: Original: project_report.docx After attack: project_report.docx.adair The malware does not alter the original filename, volume-name, or include a victim-ID prefix; only the single .adair suffix is…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: Files encrypted by AdAge are given the “.adage” extension. Renaming Convention: All affected files are renamed as follows: <OriginalFileName>.<original-extension>.id-XXXXXXXX.[<contact-e-mail>].adage Example: Report_Q4.xlsx.id-1E857D00.[[email protected]].adage 2. Detection & Outbreak Timeline Approximate Start Date/Period: The first documented AdAge activity was observed in late May 2019, peaking between June…

Acute Ransomware Resource Guide (A variant that appends the .acute extension) Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: Files are definitively re-named with the suffix .acute (e.g., Report.xlsx → Report.xlsx.acute). Renaming Convention: The ransomware preserves the original file-name and directory structure but simply appends .acute—no e-mail, ransom-stub or hexadecimal string…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: acuna Victims notice that every encrypted file is appended with the literal string .acuna after the original extension (e.g., Report_2024.xlsx.acuna, project.tar.acuna). Renaming Convention: – The ransomware leaves the base filename and original extension intact, merely adding .acuna at the end. – No additional…

TLP:WHITE – Community Threat Advisory Ransomware Variant: .acuff (a.k.a. “Acuff” ransomware, part of the MedusaLocker v3 family tree) Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: .acuff is appended to every encrypted file (lower-case, 5 letters, no preceding space or hyphen). Renaming Convention: Original filename → picture.jpg.acuff Additional sub-folder-level clue files:…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The .acuf2 extension is appended to every encrypted file after the original file-extension (e.g., report.xlsx.acuf2, database.bak.acuf2). Renaming Convention: – Every dir receives a ransom note called HOW_TO_BACK_FILES.html (occasionally a simple TXT duplicate appears). – The malware replaces, does not keep, any other ransom…