Technical Breakdown: “Afire” Ransomware 1. File Extension & Renaming Patterns Confirmed extension: .afire (lower-case, appended after the original extension) Typical renaming pattern: OriginalName.ext.afire Example: QuarterlyReport.xlsx.afire In multi-tier attacks you may also see a preceding random 6-letter prefix (e.g., F1K8QL-QuarterlyReport.xlsx.afire). 2. Detection & Outbreak Timeline First samples captured: mid-January 2023 Widespread distribution observed: March–April 2023, peaking…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: AFHSNGY is appended as a new, final extension (e.g., report.xlsx.afhsgny). Renaming Convention: • Files retain their original base name and preceding extension. • The lower-case string .afhsgny is simply tacked on, making identification straightforward through dir *.afhsgny /s on Windows or find .…

==================================================== RANSOMWARE RESOURCE: AFD (.afd) variant Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: .afd is appended to every file it encrypts (e.g., Report_2024Q1.csv → Report_2024Q1.csv.afd). Renaming Convention: – Ext is always added after the existing extension, leaving original intact. – If System Language = Russian, Ukrainian, or Belarusian, the variant…

Ransomware Resource: .aeur Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: The exact file extension appended by this variant is .aeur. Renaming Convention: • Original: Document.docx • After encryption: Document.docx.aeur (extension is appended, primary filename is not altered). • No global prefix or suffix (e.g., [ID-xxxxxxxx]) is introduced, making manual identification…

AESRT Ransomware Technical & Advisory Report Extension last revised: 2024-05-08 Technical Breakdown 1. File Extension & Renaming Patterns Exact File Extension Used: .aesrt (case-insensitive under Windows, always lowercase on Linux/ESXi payloads) Renaming Convention: After encryption, each file is renamed using the pattern: OriginalName.[8-char HEX victim-ID].[16-char HEX session-token].aesrt Example: budget_sheet.xlsx → budget_sheet.7A5F1C2E.BC1D0E9F4A3B2D8C.aesrt 2. Detection & Outbreak…

Technical Breakdown: AESIR (Thor variant, part of the Locky family) 1. File Extension & Renaming Patterns File Extension: “.aesir” (sometimes also “._aesir” in very recent samples). Renaming Convention: Files are renamed using a deterministic pattern: [unique_ID]-[random_16_bytes_in_HEX]-[original_filename].aesir Example: 3A5C8D2E-9B7C4F1E3A2B5F6D-C:\Documents\Report.xlsx ⇒ 3A5C8D2E9B7C4F1E3A2B5F6D-76FA3B4E1C5092FF-Report.xlsx.aesir Concurrently, the malware creates a ransom note inside every folder that contains encrypted files –…

AESCrypt Ransomware: Comprehensive Defense & Recovery Guide Expert resource prepared by the Cybercommunity Defence Task Force Technical Breakdown 1. File Extension & Renaming Patterns Confirmation of File Extension: AESCrypt does not change the original file extension. Instead, it appends a second, clearly-visible extension: [original_file_name].[original_extension].aescrypt For example, invoice_10-24.xlsx becomes invoice_10-24.xlsx.aescrypt. Renaming Convention: • Keeps full directory…

aesnigov ransomware – Community Defense Playbook ================================================= Technical Breakdown File Extension & Renaming Patterns • Confirmation of file extension: every encrypted file is given the secondary extension “.aesni0day” immediately after the original one (e.g. report.docx → report.docx.aesni0day). • Renaming convention: – A larger file (“bigfile.zip”) becomes bigfile.zip.aesni0day; – Victims briefly see the original file and…

Technical Breakdown: 1. File Extension & Renaming Patterns Confirmation of File Extension: .aes_ni_0day (the string is appended as a secondary extension: original.ext.aes_ni_0day). Renaming Convention: AES-NI renames files by retaining their original name and first extension, then simply concatenating .aes_ni_0day. Example: Quarterly-Report-Q2.xlsx → Quarterly-Report-Q2.xlsx.aes_ni_0day Directories and network shares are processed recursively; files that are locked by…

──────────────────────────────────────── RANSOMWARE INTELLIGENCE BRIEF File-Extension Variant: “.aes_ni” ──────────────────────────────────────── Technical Breakdown 1. File Extension & Renaming Patterns File extension used: .aes_ni (lower-case, always preceded by a dot). Renaming convention: – Original filename is preserved (e.g., Annual_Report.docx → Annual_Report.docx.aes_ni). – Full directory path is left intact (no folder-level extensions). – Some operators add a session-ID suffix like…