[Threat Profile] CryptoJoker (.cryptoJoker / .partially.cryptoJoker / .CryptoLocker) – 2020 Active Ransomware Target Audience: SOC analysts, incident responders, IT administrators, and end-users seeking a concrete, actionable guide, not marketing copy. Technical Breakdown 1. File Extension & Renaming Patterns Primary extensions observed: .cryptoJoker, .partially.cryptoJoker, or the legacy older strain .CryptoLocker are used interchangeably. Renaming Convention: Original…

Technical Breakdown (cryptojacky) 1. File Extension & Renaming Patterns Confirmed file-extension: .cryptojacky (lowercase) Renaming convention:  Original_FileName.<random-4-char-uqid>.cryptojacky  Examples:   Quarterly_Report.xlsx → Quarterly_Report.xlsx.17tf.cryptojacky   customer_db.sql → customer_db.sql.y2kp.cryptojacky A 4-character, pseudo-random alphanumeric string ([a-z0-9]{4}) is inserted directly before the final .cryptojacky. 2. Detection & Outbreak Timeline First documented sightings: 14–18 July 2023 (cumulative detections by Microsoft Defender & SentinelOne cloud…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The variant appends the extension .cryptoid_<random 8-hex-chars>. Example: a file originally named Report_2024.xlsx becomes Report_2024.xlsx.cryptoid_A3E5F91D. Renaming Convention: – Pre-existing extension is kept. – A hard-coded dot (.) followed by the string cryptoid_ and an 8-character hexadecimal string (lower-case a–f, 0–9) is appended after…

CryptoID (.cryptoid) Ransomware – Comprehensive Community Defense Guide Last updated: 12 June 2024 Technical Breakdown 1. File Extension & Renaming Patterns Exact File Extension: .cryptoid Renaming Convention: Files are renamed using the template <original_filename>.<original_extension>.[unique-victim-ID].cryptoid Example: Quarterly-Report.xlsx.ABCD1234.cryptoid 2. Detection & Outbreak Timeline First Seen in the Wild: 27 March 2024 First Major Campaign Peak: 7–13 April…

Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: Every encrypted file receives the single-word extension .cryptohitman (lower-case, no trailing dot). Renaming Convention: Original: report_Q2.xlsx Ransom-named: report_Q2.xlsx.cryptohitman The file name stem is left intact; only the new extension is appended. No e-mail addresses, hexadecimal IDs, or subfolder-name changes are used. 2. Detection…

Ransomware Deep-Dive Report Variant: “CryptoHasYou” (.cryptohasyou extension) Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: Encrypted files receive the suffix “.cryptohasyou” (lower-case, no dot prefix, appended exactly after the last existing extension, e.g., Report.xlsx → Report.xlsx.cryptohasyou). Renaming Convention: ✔ Preserves the original filename and its native extension—nothing is inserted in the…

Technical Breakdown: CryptoGod Ransomware 1. File Extension & Renaming Patterns Confirmation of File Extension: .cryptogod (Standardized verification: files appear as document.docx.cryptogod, spreadsheet.xlsx.cryptogod, etc.) Renaming Convention: CryptoGod uses a plain suffix append strategy: Original file name and extension remain intact. Appends the string .cryptogod after every infectious hit. No random hexadecimal prefixes or email identifiers (no…

Ransomware Profile: CryptoFortress (.cryptofortress/.vault) Technical Breakdown 1. File Extension & Renaming Patterns Confirmed Extension(s): Encrypted files are given the suffix .cryptofortress (e.g., report.xlsx.cryptofortress). An earlier variant also appended .vault; if you see both suffixes on the same network it means you are dealing with the 2023 build that begins the attack chain by searching for…

Ransomware Resource: CryptoFinancial | Extension .cryptofinancial Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: The ransomware appends .cryptofinancial after the original extension. Example: Q3_budget.xlsx.cryptofinancial, drawing.dxf.cryptofinancial. Renaming Convention: File names remain intact; only an additional 18-character suffix is appended. Sub-folders receive a plain-text ransom note named README_cryptofinancial.txt, and the desktop wallpaper is…

CRYPTODEVIL RANSOMWARE COMMUNITY RESOURCE (Security guidance last reviewed: 25-10-2023 | v1.3) Technical Breakdown 1. File Extension & Renaming Patterns • Confirmation of File Extension: .cryptodevil (always lower-case) • Renaming Convention: OriginalPath → OriginalName<.extension>.cryptodevil Examples: – Budget_2023.xlsx → Budget_2023.xlsx.cryptodevil – photo.jpg → photo.jpg.cryptodevil Renaming is sequential (no segmented IDs, no round-robin per folder), making it easy…