Technical Breakdown: COOT ransomware (STOP/Djvu family) 1. File Extension & Renaming Patterns Confirmation of File Extension: All encrypted files receive the single-byte extension .coot appended to the original filename. Renaming Convention: OriginalName.ext.coot – nothing else is altered (no e-mail address, no random ID string between the filename and extension). 2. Detection & Outbreak Timeline Approximate…

,, stuff company’s (

Complete Reconstruction of Malware Files Structured recovery depends on the malware family – for some variants it is possible, while for others it remains impossible. Below are actionable instructions and insights that I synthesized after analyzing best-practice incident-response playbooks and court-validated case studies. Adapt everything to the environment you manage: 1. Immediate Response & Containment…

!

#

Ransomware Analysis & Response Guide Variant Identifiers: .cool Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: All encrypted files receive the suffix .cool. (e.g., Q3_Report.xlsx becomes Q3_Report.xlsx.cool). Renaming Convention: The ransomware does not alter the original file name or insert any additional markers (serial numbers, attacker e-mails, etc.). The only observable…

RANSOMWARE INTELLIGENCE BRIEF Target Extension: .cookieshelper Technical Breakdown 1. File Extension & Renaming Patterns Exact extension appended: .cookieshelper (all lowercase, no spaces). Typical filename change: The ransomware overwrites the original extension and keeps the stem intact. Example: Quarter-3-Report.xlsx → Quarter-3-Report.xlsx.cookieshelper No extra prefix or base64-style token is inserted, making the change simple and easy to…

Ransomware Resource: “Cookies-F*” (.cookies-F{{8_hex_digits}}) Technical Breakdown 1. File Extension & Renaming Patterns | Element | Details | Example (before → after) | |———|———|————————–| | Original file extension | Replaced/not appended to | invoice.docx | | Ransom extension | .cookies-F{{8_hex_digits}} where the last part is eight random hexadecimal characters. | invoice.docx → invoice.cookies-F3F9A127 | | Recursive…

Comprehensive Ransomware Intelligence – Extension & Family: CONTI Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension .conti (lowercase, appended without spaces) Renaming Convention • Original filename + 32-byte hexadecimal identifier (victim UID) + .conti Example: Financials_2023_Q2.xlsx.EF978F19A421B3E7E4C2D3C49B0F.conti • If Conti executes post-reboot, files are also placed into sub-folders named after the ransom note…

ContactUs Ransomware – Community Resource Guide Technical Breakdown 1. File Extension & Renaming Patterns File Extension Confirmed: .contactus Sometimes followed by an 8-byte hexadecimal ID in brackets to track victims (e.g., .id[AB12CD34].contactus). A secondary contact e-mail address may be appended after the extension (e.g., [email protected]). Typical File Rename Flow: Document.docx → Document.docx.id[AB12CD34][email protected] 2. Detection &…