Technical Breakdown: (Compiled for the variant that appends “.cmsnwned” to encrypted files) 1. File Extension & Renaming Patterns Confirmation of File Extension: .cmsnwned – exactly four letters lower-case and always placed after the original file-name. Renaming Convention: <original_filename>.<original_extension>.cmsnwned Example: 2024-Budget.xlsx → 2024-Budget.xlsx.cmsnwned 2. Detection & Outbreak Timeline Approximate Start Date / Period: 15 – 25…

CmLocker Ransomware Resource Sheet (.CMLOCKED file extension variant) Prepared for: blue-teams, SOC analysts, incident-response boots-on-the-ground Classification: TLP:GREEN – free to share in the defensive community Technical Breakdown 1. File Extension & Renaming Patterns | Item | Detail | |—|—| | Confirmation of File Extension| Every successfully encrypted file receives the suffix “.CMLOCKED”. The suffix is…

Ransomware Reference: “.cmg” (CMG Locker / CMG Ransomware) Last updated: 2024-06-14 Audience: IT-Security teams, SOC analysts, system administrators, and individual users. Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: The malware appends .cmg to every encrypted file (e.g., invoice.xlsx → invoice.xlsx.cmg). Renaming Convention: Files keep the original name + original extension…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: *.cmdransomware Renaming Convention: Original file base-64 encoded and appended with .cmdransomware; directories are not renamed, but a file named cmd_ransom_note.txt is dropped in every folder containing encrypted files. Typical entry: UERGL0ZpbmFuY2lhbF9SZXBvcnQyMDI0LnBkZg==.cmdransomware 2. Detection & Outbreak Timeline Approximate Start Date/Period: First reported in public…

Technical Breakdown – cmdransomware (alias: “CMD Ransomware”, “Nitro CMD”) 1. File Extension & Renaming Patterns Confirmation of File Extension: .cmdransomware – the malicious binary appends this literal string as a secondary extension to every encrypted file. Example transformation: Quarterly_Report.xlsx → Quarterly_Report.xlsx.cmdransomware Renaming Convention: Victim files keep their original name; no obfuscation, prefixes, or random IDs…

Cmblabs Ransomware – Deep-dive Analysis & Practical Playbook CVE-relevant, lab-friendly, and ready to copy into your IR run-books. 1. File Extension & Renaming Patterns Exact Extension: .cmblabs (lower-case, seven characters) Renaming Convention: Every encrypted file is first Base64-encoded and then receives an extra .cmblabs suffix. Example: Report_03_2024.pdf → UmVwb3J0XzAzXzIwMjQucGRm.cmblabs Directory structure is untouched; only the…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: CMB ransomware appends “.cmb” to every encrypted file. Renaming Convention: [original_name][random-8-char_hex_id].cmb. Example: report_2023 Q4.xlsx becomes report_2023 Q4.xlsx 95A7F3E2.cmb. The 8-character block is randomly generated per host/execution and separates each victim’s dataset. 2. Detection & Outbreak Timeline Approximate Start Date/Period: First analyzed submissions date…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .club Renaming Convention: Victim files are renamed twice: Initial rename: Originalname.[victim-ID].[attackeremail].club Example: Annual_Report.xlsx.id-A1B2C3D4.[[email protected]].club Second rename (April 2023+ variants only): After encryption the ransom note hex-encoded extension .NGSC is appended, creating a double-extension OWASP-style (*.club.NGSC). 3rd-party explorers show only .club, but disk I/O keeps…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The exact extension appended to encrypted files is .clown+ (including the plus sign). Renaming Convention: After encryption the victim’s original filename is kept, followed by a unique 10-character alphanumeric victim-ID in square brackets (e.g., Document.docx[A71X8E2F9Y].clown+). All sub-folders receive a copy of the ransom…

Technical Breakdown: Clown Ransomware 1. File Extension & Renaming Patterns Confirmation of File Extension: Every encrypted file receives the extension .clown appended to its original name (e.g., report.docx → report.docx.clown). Renaming Convention: Files are not renamed beyond the single appended extension. Directory names and filenames remain intact, making post-attack file listings look like “filename.ext.clown”. There…