Technical Breakdown – Crypt888 (a.k.a. « Locky-Offline », « MircOp ») 1. File Extension & Renaming Patterns Confirmation of File Extension Crypt888 renames encrypted files by pre-pending the static string Lock. to the original file-name while keeping its original extension intact (ex: Budget-2024.xlsx becomes Lock.Budget-2024.xlsx). Unlike most families, it does NOT add a second file…

crypt38 Ransomware – Technical Breakdown & Recovery Playbook Version 1.3 – last reviewed 2024-05-28 1. File Extension & Renaming Patterns | Item | Evidence & Notes | |—|—| | Confirmed extension added | .crypt38 (occasionally observed in uppercase .CRYPT38 on Linux hosts) | | Renaming convention | Appends extension after the original file extension: Report_Q1.xlsx…

Ransomware Research & Response Guide Variant Identifier: “.crypt2019” Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: The malware appends the static extension “.crypt2019” (lowercase, no leading dot). Renaming Convention: Original file names are NOT altered; only the extra suffix is added. Report_Q3.xlsx → Report_Q3.xlsx.crypt2019 The file names themselves remain recoverable, the…

Technical Breakdown (Crypt14 Ransomware) 1. File Extension & Renaming Patterns Confirmation of File Extension: .crypt14 Encrypted files retain their original name but receive this suffix appended to every affected file. Renaming Convention: [original filename].[original extension].crypt14 e.g., Annual_Report.xlsx → Annual_Report.xlsx.crypt14 2. Detection & Outbreak Timeline Approximate Start Date/Period: First large-scale sightings during March–April 2022, with a…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The threat in question does NOT change file extensions to “.crypt12” itself. The “.crypt12” suffix is generated by WhatsApp when it creates an encrypted backup of your chat database (msgstore.db.crypt12). It is not a symptom of ransomware at all. Typical Renaming Convention: WhatsApp…

Ransomware File-Extension “.crypt1” — Complete Intelligence & Recovery Guide (Compiled by: CERT-level Incident Response Contributor, last update 2024-05-30) Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: .crypt1 (note the lowercase suffix with no preceding dot in real world). Renaming Convention: – Filename rewritten with a 6-byte hard-coded marker 1C 73 E7…

Ransomware Profile: crypt0r TECHNICAL BREAKDOWN 1. File Extension & Renaming Patterns Confirmed Extension: .crypt0r Renaming Convention: – Victim files are appended, not replaced: document.xlsx → document.xlsx.crypt0r – No filename obfuscation or prefixing; users can still read the original basename, which is helpful in triage. 2. Detection & Outbreak Timeline First Public Sighting: mid-May 2023 (highest…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: crypt0l0cker always appends “.crypted” (case-insensitive in most infections) to the end of every encrypted filename. Renaming Convention: The complete original filename remains intact except for the suffix. Example: • Before → QuarterlyReport.xlsx • After → QuarterlyReport.xlsx.crypted Directories are not renamed, but inside every…

# crypt0 Ransomware: Comprehensive Technical & Recovery Guide Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .crypt0 Renaming Convention: Victims see their files double-extended in the format original_name.extension.crypt0. Example: 2024_Q2_Report.xlsx becomes 2024_Q2_Report.xlsx.crypt0. Inside every affected directory a plain-text ransom note is dropped as _README_CRYPT0_.txt. 2. Detection & Outbreak Timeline Approximate Start…

Malware Report: The “crypt-*” Variant (a.k.a. CryptoMix / CryptFile2) Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: Encrypted files receive a new 32-character extension beginning with “crypt-” followed by hexadecimal characters (e.g. .crypt-1A2B3C4D5E6F7890ABCD1234E5F67890, .crypt-0C7E…, etc.). The full extension is 37 bytes long (including the hyphen). Renaming Convention: Original filename remains as-is;…