Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .r2cheats Renaming Convention: The malware prepends an 8-byte ASCII identifier to the original file name, followed by the fixed string _r2cheats. Example: Before → Project.docx After → 5F3B7EAA_Project.docx.r2cheats 2. Detection & Outbreak Timeline Approximate Start Date/Period: First observed in underground forums in mid-June…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: After encryption, every file receives the fixed, static suffix ._r00t_2024_* (the asterisk is literal and is not replaced with random characters). No extra hexadecimal blocks or v4 UUIDs are appended. Renaming Convention: Full original filename plus extension remain intact. Example → Quarterly_Report.xlsx becomes…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .out – never observed with any appended ID, version, or victim code. Renaming Convention: <original_filename>.<original_ext>.out Example: presentation.pptx.out, CRM_backup.zip.out. The double-extension pattern keeps the original file name and original extension as-readable characters, making it easy to identify what was encrypted. 2. Detection & Outbreak…

Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: _nullbyte* (most commonly ._nullbyte, filename._nullbyte) – note that the asterisk is not actually part of the final extension; analysts often use the * as a wildcard placeholder in logs, so the real suffix appended to each encrypted file is ._nullbyte. Renaming Convention: Original…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .not_a_joke (note the leading underscore is not part of the actual extension; the ransomware appends the literal suffix .not_a_joke). Renaming Convention: OriginalFileName.ext.not_a_joke Typical example: QuarterlyFinance.xlsx.not_a_joke No additional prefix or Base-64 encoded strings are added to the file name itself; the only mutation is…

Ransomware Resource – _nemty_btkid9h_ Variant Technical Breakdown File Extension & Renaming Patterns • Confirmation of File Extension: The ransomware appends nemtybtkid9h to every encrypted file (e.g., document.pdf→document.pdf._nemty_btkid9h_). • Renaming Convention: ..nemtybtkid9h (case insensitive; no prefix, no random hex block). The desktop wallpaper and each directory also receive a ransom note named NEMTY-DECRYPT.txt. Detection & Outbreak…

Ransomware {{ $json.extension }}:// aka NEMTY Comprehensive Response and Recovery Guide (Last reviewed: 2024-06-18) Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: Files encrypted by NEMTY receive the extension {{ $json.extension }} e.g. budget-2024.xlsx → budget-2024.xlsx._nemty_random8chars Renaming Convention: original_name.ext._nemty_[8-random-alphanumeric-chars] The 8-character suffix is created with every infection run and varies from…

Ransomware Resource: _nemty* (Nemty / Nefilim Ransomware Family) Technical Breakdown 1. File Extension & Renaming Patterns Confirmed File-Extension: Decrypted files receive one of the following lines appended just before the original extension: .nemty .nemty_[version tag] (e.g., .nemty_A, .nemty_B, .nemty_2023…) .nefilim (sub-fork after source-code leak; common from 2020 onward) .MERS .L00CKED Actual Renaming Convention: (<original_filename> +…

──────────────────────────────── RANSOMWARE FILE-EXTENSION BRIEFING: _luck ──────────────────────────────── Technical Breakdown 1. File Extension & Renaming Patterns Exact Extension: Encrypted files receive the additional suffix “. _luck” (note the leading space and dot – “letter.doc” becomes “letter.doc . _luck”). Renaming Convention: The original base-name and all existing extensions are preserved in the correct order – the ransomware merely…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .locky (sometimes written as .locky only; the ransom note is NOT the extension but accompanies every encrypted file set). Older campaigns have also been observed using .zepto, .odin, .thor, .aesir, .zzzzz, .shit, or .osiris, but all fall under the Locky family tree. Renaming…