Technical Breakdown – Ransomware “Bubble” 1. File Extension & Renaming Patterns Confirmation of File Extension: The ransomware has definitively been observed appending “.bubble” (lower-case) as the final file extension. Renaming Convention: After encryption the file path typically becomes original_filename.original_ext.id-<victim_id>.bubble Example: Annual_Report_2024.xlsx.id-9FA3B612.bubble 2. Detection & Outbreak Timeline Approximate Start Date / Period: Large-scale detection first peaked…

STOP/Djvu Ransomware (.bttu variant) – Technical & Recovery Guide Last updated: 2024-06-09 Technical Breakdown 1. File Extension & Renaming Patterns Exact Extension: .bttu Renaming Convention: Original name → <base filename>.<original extension>.bttu Example: Report_Q2_2024.xlsx becomes Report_Q2_2024.xlsx.bttu 2. Detection & Outbreak Timeline First Public Sightings: Mid-September 2022 (late wave #262 of the STOP/Djvu family) Peak Activity: October…

Ransomware Advisory – .btos Strain A-POCALYPSE BTOS / Stop(Djvu) variant – updated August 2024 Technical Breakdown 1. File Extension & Renaming Patterns • Exact extension appended: .btos (always lower-case) • Renaming convention: – Original filename: 2023_Invoice_Q3.xlsx – After encryption: 2023_Invoice_Q3.xlsx.btos – No additional ID-string, e-mail or ransom note name is placed inside the new filename…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .btnw (exactly four lowercase characters preceded by a dot) is appended to every encrypted file without removing or altering the original extension. Renaming Convention: The ransomware performs post-fix renaming: document.docx → document.docx.btnw photo.jpg → photo.jpg.btnw It leaves directory names intact but drops a…

btix Ransomware Intelligence Report Last updated: 2024-06-29 Technical Breakdown 1. File Extension & Renaming Patterns Exact extension used: .btix Note: The malware also drops its own extension marker three times in a row (file.docx.btix.btix.btix) on some builds—an easy fingerprint when triaging incidents. Renaming convention: [original_name][random_8_hex][.btix] Example: Quarterly_Report_Q2_2024_A27C3B8F.btix Early iterations (February 2024) only appended .btix, but…

Ransomware Variant: bthtlb Comprehensive Technical & Recovery Resource Last Updated: 2024‑06 – 09 1. Technical Break-down 1.1 File Extension & Renaming Patterns | Attribute | Detail | |—|—| | Confirmed extension | .bthtlb is appended after the original extension, maintaining the first extension visible (e.g., report.xlsx.bthtlb). | | Naming convention | Typically preserves original file and folder…

Technical Analysis & Remediation Guide Ransomware Family Associated with Extension .bthtib (Prepared for community use – last updated June 24, 2025) Technical Breakdown: 1. File Extension & Renaming Patterns | Label | Details | |—|—| | Confirmation of File Extension | “.bthtib” (always lowercase, never contains sub-extensions). | | Renaming Convention | Files first receive…

Comprehensive Analysis & Defense Guide Ransomware variant: BTCWare Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: BTCWare historically uses an ever-changing set of custom hex-suffix extensions (e.g. .btcware, .cryptobyte, .theva, .onyon, .shadow, .aleta, .nuclear55, .blocking, etc.). Victims will therefore see files such as: Budget Q3.xlsx.aleta or photo.jpg.shadow. Renaming Convention: Original file…

btcry_zip Ransomware – Comprehensive Technical Brief & Recovery Guide (Last updated: June 2024) Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: .btcry_zip (case-insensitive on Windows, case-sensitive on UNIX-like mounts) Renaming Convention: • Original: Budget_Q2.xlsx • After encryption: Budget_Q2.xlsx.id-[16-hex-chars].btcry_zip • Optional ransomware note file is dropped alongside every encrypted file with the…

──────────────────── Community Resource: BTCKING Ransomware ──────────────────── Technical Breakdown 1. File Extension & Renaming Patterns • Confirmed Extension: .btcking • Renaming Convention: Files are renamed to the pattern   <original_filename>_<random_6_digit_hex><random_2_char_suffix>.btcking   Example: Report.docx_32C7D9aA.btcking 2. Detection & Outbreak Timeline • First Public Samples: 31-Jan-2023 (tweetstorm + VirusTotal uploads) • Active Campaign Spikes:   – Wave-1: 02-04 Feb 2023 (targeting U.S.…