_crypted Ransomware – Technical Breakdown & Recovery Playbook (Compiled June 2025 – Ransomware ID: random4-char-tie-in with the “. EXE” suffix variant) 1. File Extension & Renaming Patterns File extension .crypted (all lowercase, preceded by a dot) is appended after the original extension. Renaming convention originalname.ext. → originalname.ext.crypted No base-name changes, no email addresses, no numeric…

Below is everything you need to know about the “ crypt ” ransomware family (identified by the “crypt” file extension). Use this as a single-source playbook for both the technical defense team and the incident-response lead. Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: ENCRYPTED files receive an additional suffix of…

Technical Breakdown – _anarchy Ransomware 1. File Extension & Renaming Patterns Confirmation of File Extension: _anarchy (Appended literally after the original filename; no dot, and keeps the original extension later in the string.) example.docx → example.docx_anarchy Renaming Convention: Files keep their native base-name plus original extension in-line, then have “_anarchy” appended as a trailing suffix.…

Ransomware Resource – Variant _airacropencrypted! Technical Breakdown File Extension & Renaming Patterns Confirmation of File Extension: Every encrypted file is appended with the literal suffix .AirACoPencrypted! (case-insensitive). Renaming Convention: <original file name>.<original extension>.AirACoPencrypted! Example: Quarterly_Finance.xlsx → Quarterly_Finance.xlsx.AirACoPencrypted! No Base-64 style random prefixes or victim IDs are added; thus filenames look almost identical after encryption—simply longer.…

Ransomware Deep-Dive: _airacropencrypted Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: _airacropencrypted This is not an appended suffix (e.g., .encrypted) but an actual string that replaces the original file extension—turning invoice.docx ➜ invoice_airacropencrypted. Renaming Convention: The ransomware erases the dot and the original extension, then concatenates _[Victim-ID]_airacropencrypted on every encrypted file.…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: __r4gn4r* (note the double-underscore prefix and wildcard asterisk that varies from victim to victim – victims typically see an additional random string appended, e.g. “__r4gn4r_f6A3c9X0”) Renaming Convention: For files → original-name.ext.id-victimID.__r4gn4r_random5-12chars (ID is usually 8–10 hex digits tied to the workstation). For folders…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The ransomware appends every encrypted file with the literal string .__nist_k571__, e.g., AnnualReport.xlsx.__nist_k571__, SalesBackup.dbf.__nist_k571__. Renaming Convention: [OriginalFileName].[OriginalExtension].nistk571 (No random-prefix, no forced uppercase/lowercase; the extra “_” both before and after the NIST reference is intentional.) 2. Detection & Outbreak Timeline Approximate Start Date/Period: First…

{{ $json.extension }} – Ransomware Response Dossier (codename: __dilmav1) Last revised: 2024-06-XX Technical Breakdown: 1. File Extension & Renaming Patterns • Confirmation of file extension: .__dilmav1 (two leading underscores, lower-case). • Renaming convention: – Original file picture.jpg → picture.jpg.__dilmav1 (appended once). – Folder name itself is not altered, but every file inside is re-encrypted; no…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: The exact file extension appended to encrypted objects is ._.rmd (note the leading dot followed by an underscore, a second dot, and the three-letter identifier rmd). Renaming Convention: • Original name, full original extension, and the entire encrypted payload are first Base64-encoded by…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: @yahoo.com.cryptotes Renaming Convention: – Victim files receive an additional suffix (not a full rename) placed after the original extension. – Common pattern: OriginalName.docx → OriginalName.docx id-[8_hex_digits].[victim_email]@yahoo.com.cryptotes – Example seen in the wild: Report.xlsx → Report.xlsx [email protected] – No file-name encryption, only the contents…