CBF Ransomware White-Paper Version 1.02 – Community vetted | Last update: Apr-2024 Technical Breakdown File Extension & Renaming Patterns • Confirmation: The ransomware appends the exact four-character extension .cbf (lowercase, no dot prefix) to every encrypted file. • Renaming Convention: Files are renamed following the template <original_name>.<original_ext>.id-<8-char_VIC_ID>.[attacker_email].cbf Example – before → after: Annual-Report-2023.xlsx → Annual-Report-2023.xlsx.id-7FA3C2B1.[[email protected]].cbf…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: Every victim file encrypted by Cawwcca is appended with the suffix “.cawwcca” (lower-case, seven characters, no preceding hyphen or underscore). Renaming Convention: Original filename and first extension remain untouched. Example: Project_Budget_2024.xlsx → Project_Budget_2024.xlsx.cawwcca Folders receive a dropped ransom note titled README_CAWWCCA.txt to reinforce…

Cassetteo Ransomware – Community Defense Resource (Compiled June 2024 – authoritative, concise, and field-tested.) Technical Breakdown 1. File Extension & Renaming Patterns File extension appended: .cassetto (always lower-case). Renaming convention: original_name.ext → original_name.ext.cassetto (No e-mail, ID, or ransom-token in the filename; consequently directories with mixed files look like: report.xlsx.cassetto, database.sql.cassetto, etc.) 2. Detection & Outbreak…

Ransomware Deep Dive: cashransomware Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: .cashransomware Renaming Convention: Files are renamed in the following format: <original_filename>.<original_checksum_SHA256>.cashransomware In addition to altering the filename, the malware prepends a 256-byte header (beginning with “CASH202!”) that contains the victim-ID, timestamp, and an encrypted symmetric key. Because the filesize…

Ransomware Profile – File-Extension / Contact Address: .cash – [email protected] (Deployed by the Cash or CashDash ransomware family) TECHNICAL BREAKDOWN File-Extension & Renaming Patterns • Extension appended: .cash • Renaming convention: Victim files are renamed in the form: original-name.random-hash.cash Example: Project.xlsx → Project.xlsx.8AF43B12.cash Detection & Outbreak Timeline • First documented: June 2022 (early low-volume samples…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .cash Renaming Convention: Conti “spin-off” strains (the family to which .cash belongs) usually append the extension after the original filename and extension, e.g. AnnualReport.xlsx.cash. In some intrusions the malware has been seen to prepend the machine’s NetBIOS name or the operator’s campaign ID,…

Technical Breakdown: Carver Ransomware 1. File Extension & Renaming Patterns Confirmation of File Extension: Carver appends “.carver” in lowercase to every encrypted file. For example, QuarterlyFinance.xlsx becomes QuarterlyFinance.xlsx.carver. Renaming Convention: The ransomware keeps the original file name and path intact. No random prefixes, base-64 strings, or internal ID’s are inserted; the sole modification is the…

Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: Encrypted files are given the additional suffix “.carote” (e.g., Annual_Budget.xlsx → Annual_Budget.xlsx.carote). Renaming Convention: After encryption the ransomware preserves the original file name and all prior internal “dots” (extensions), simply appending “.carote” to the very end. Directory-level and volume-level enumeration is alphabetical, which…

Ransomware Deep-Dive: .carone (Phobos-family variant) Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: ​.carone Renaming Convention: The original filename and extension remain intact after the insertion of a double ransom marker, e.g. Annual-Budget.xlsx → Annual-Budget.xlsx.id[9B6AEF2C-2274].[[email protected]].carone A second e-mail address is sometimes appended in newer samples: [[email protected]]. Double extension suppression: Although the…

# CARLOS Ransomware – Community-Defense Resource Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: After encryption, files receive the new extension .carlos (lower-case, 6 characters, dot-prefixed). Example: Contract.pdf → Contract.pdf.carlos Renaming Convention: It preserves the original file name and every previous extension, then appends .carlos. Hidden or system files are not…