Resource Sheet: The “.eeyu” Ransomware Variant (STOP/Djvu family, observed early-May 2024) PART 1 – TECHNICAL BREAKDOWN File Extension & Renaming Pattern Extension added: .eeyu (lower-case, four characters, preceded by a dot). Renaming convention: Original name is preserved, the extension is simply appended. Example: Project.xlsx → Project.xlsx.eeyu Dropped marker file: _readme.txt (identical text placed in every…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: “.eexpl” is appended verbatim to the original filename. Renaming Convention: Original name → <original-name>.<original-extension>.eexpl – Example: Budget_2024.xlsx becomes Budget_2024.xlsx.eexpl. – Folders receive a plain-text ransom note !readme_eexpl.txt dropped inside every directory once encryption is finished. 2. Detection & Outbreak Timeline Approximate Start Date/Period:…

Technical Breakdown: “EEWT” ransomware (a STOP/Djvu spin-off) 1. File Extension & Renaming Patterns Confirmation of File Extension: the literal, lower-case string “.eewt” is appended to every encrypted file. Renaming Convention: original filename + 4-character random ID (lower-case letters) + attacker e-mail address + “.eewt” Example: Document.docx → Document.docx.6p3x.eewt (Older samples sometimes omit the ID, producing…

eewsb Ransomware ─ Community Response Guide Last update: 27 June 2024 1. TECHNICAL BREAKDOWN 1.1 File-extension & Renaming Pattern Correct extension: .eewsb (lower-case, five characters, appended as a secondary extension: invoice.pdf → invoice.pdf.eewsb) No prefix/surfixed e-mail or ID string – the ransom note file name (_readme.txt) is the only external marker left in each folder.…

Ransomware Brief – “.eemv“ variant (DJVU/STOP family) TECHNICAL BREAKDOWN 1. File extension & renaming patterns Extension appended: .eemv (lower-case, four letters, no space or bracket) Renaming convention: OriginalName.jpg → OriginalName.jpg.eemv The file name itself is NOT scrambled—only the extension is added. A text note is dropped in every folder + the desktop: _readme.txt 2. Detection…

Ransomware Advisory for the “.eegf” extension (Updated May 2024) ======================================== TECHNICAL BREAKDOWN File Extension & Renaming Patterns • Confirmation of File Extension: every encrypted file receives the secondary extension “.eegf” (lower-case). • Renaming Convention: – Original: annual_report.xlsx – After encryption: annual_report.xlsx.eegf – Some clusters also prepend the victim ID in brackets, e.g. [C3A2F899]annual_report.xlsx.eegf. – The…

EEFG Ransomware – Community Resource Guide Technical Breakdown 1. File Extension & Renaming Patterns Confirmed extension: .eefg (lower-case, four characters, appended as a secondary extension). Renaming convention: original_name.ext.id[UNIQUE-ID].[attacker_email].eefg Example: 2024-budget.xlsx.id[A1B2C3D4].[[email protected]].eefg The ID is an 8-byte hex string generated from the victim’s MAC address + volume serial number; the e-mail changes per campaign (most frequently [email protected],…

eebn Ransomware – Community Resource Sheet (Version 1.0 – compiled May 2024) Technical Breakdown 1. File Extension & Renaming Patterns Confirmed extension: .eebn (lower-case, four letters) Renaming convention: Original file report.xlsx → report.xlsx.eebn No email address or victim-ID is inserted between the original name and the new extension The root filename is left untouched; only…

Ransomware Intel Card ‑ “EDW” Extension TECHNICAL BREAKDOWN 1. File Extension & Renaming Patterns Confirmation of File Extension: Encrypted files receive the SECONDARY suffix “.edw” (lower-case). Example: Invoice_Oct.xlsx → Invoice_Oct.xlsx.edw Renaming Convention: The ransomware normally keeps the original filename, directory tree, and primary extension untouched and only appends “.edw”, so analysts can still see the…

Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: After encryption the malware concatenates the lowercase string “.eduransom” to every affected file (e.g., 2024-budget.xlsx → 2024-budget.xlsx.eduransom). Renaming Convention: Original file names are left intact (no base-64 or hex shuffling), only the additional 10-byte suffix is appended – a trait often used by…