Crypton Ransomware Reference v2024.04 Community-curated, last updated 2024-04-27 18:30 UTC Technical Breakdown 1. File Extension & Renaming Patterns Confirmed suffix: .crypton (lower-case, 7 characters, no preceding dot). Renaming Convention: Each encrypted file receives a two-part suffix: <original_filename>.<UUIDv4_without_dashes>.crypton Example: Report_2023Q4.docx.4f1a2d3c5e7b8a9d0f1c2e3b4c5d6e7f.crypton No additional prefix or base-name change. 2. Detection & Outbreak Timeline First public sighting: 2022-03-14 (reported…

Technical Breakdown: cryptomix wallet 1. File Extension & Renaming Patterns Confirmation of File Extension: The ransom note explicitly demands that the victim e-mail files with the extension .WALLET to the operators so that a free test decryption can be granted. Every encrypted file therefore has .WALLET appended to its original name. Renaming Convention: For every…

Cryptomix Revenge Ransomware – Community Defense Guide Last updated: June 2024 1. Technical Breakdown File Extension & Renaming Patterns Confirmation of File Extension: [[victim_id]].REvenge Renaming Convention: Original file names remain but the attackers append a unique, 32-byte victim-ID in square brackets followed by .REvenge. Example: annual-report.xlsx → annual-report.xlsx[A1B2C3D4E5F6789A0B1C2D3E4F5A6B7C].REvenge Detection & Outbreak Timeline Approximate Start Date…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: CryptoMix continues to use a variety of extensions based on the campaign wave. Common observed suffixes include – .cryptoshield, .EXTE, .ZERO, .arena, .work, .harm, and more recently randomized 5-7 character strings such as .VERR0. – Do not assume only one extension; additional campaign…

Ransomware Variant Resource – “CryptoLuck” Extension Observed: .[[email protected]].cryptoluck Technical Breakdown 1. File Extension & Renaming Patterns Exact Extension: .cryptoluck Note: Many samples also prefix or suffix the e-mail address of the criminal affiliate ([email protected]), producing patterns such as invoice.docx.[[email protected]].cryptoluck. Renaming Convention: – Original name is preserved but appended with .<ID>.cryptoluck. – The leading ID is…

Ransomware Resource – Cryptolocky Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: .cryptolocky All encrypted files receive a double-extension – the original extension is preserved and immediately followed by “.cryptolocky” Example: Quarterly-Forecast.xlsx.cryptolocky Renaming Convention: – Inside every folder the ransomware touches, a separate file named _how_to_decrypt.cryptolocky.txt (or README_Cryptolocky.txt) is dropped, containing…

CRYPTOLOCKEREU RANSOMWARE COMPREHENSIVE GUIDE Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .cryptolockereu – appended as a secondary extension (e.g., Budget_2023.xlsx.cryptolockereu, customer_db.mdb.cryptolockereu). Renaming Convention: Victim’s original file extension is preserved. Lower-case suffix .cryptolockereu is concatenated. Files are NOT renamed with a unique victim-ID prefix; directories do receive a ransom-note drop: README_FOR_DECRYPT.txt.…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The cryptolocker3 strain appends the extension .cryptolocker3 (lower-case, no space) to every file it encrypts. Renaming Convention: Victims observe that original filenames and folder structures are left intact; the ransomware simply tacks the 15-character suffix onto the final extension (e.g., report.xlsx → report.xlsx.cryptolocker3…

Comprehensive Community Resource for the CryptoLocker Family (File extension signature: “.CryptoLocker*” variants) Technical Breakdown: 1. File Extension & Renaming Patterns • Confirmation of File Extension CryptoLocker Family Variants: – Core 2013–2014 strain: .encrypted, .cryptolocker, or no extra extension (only filename.pdf → filename.pdf.cryptolocker) – 2017–2019 Doppelgänger “Imposter” builds: .CRIPTOLOCKER, .CRYPTOLOCK, .CryptoLockerID-<XXXX> – 2021+ RaaS spin-off: .CL,…

CryptoLocker – Complete Technical & Recovery Guide (Compiled for the community from forward-deployed incident-response notebooks and threat-intelligence feeds) 1. Technical Breakdown 1.1 File Extension & Renaming Patterns • Primary encrypted extension dropped on disk: .encrypted (earlier variants) or .cryptolocker (later press coverage/fork campaigns). • Renaming convention: Each encrypted file is appended with “.encrypted” after the…