Overview

overview

10

Static

static

3

2025-11-11...uk.exe

windows10-2004-x64

10

2025-11-11...uk.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    2025-11-11_e5ca4e893cd35e75487a32d271316136_njrat_ryuk
  • Size 3.5MB
  • Sample251111-n6v4hsvlcm
  • SHA256 ad07f0eb8387a61826688feefd439deb31364f5fb08e2a60ddf5444ed41eb6e7
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
ryukpersistenceransomware

Malware Config

Extracted

Path

  • F:\RyukReadMe.txt

  • ryuk

Ransom Note
  • Your network has been penetrated. All files on each host in the network have been encrypted with a strong algorithm. Backups were either encrypted or deleted or backup disks were formatted. Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover. We exclusively have decryption software for your situation No decryption software is available in the public. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT RENAME OR MOVE the encrypted and readme files. DO NOT DELETE readme files. This may lead to the impossibility of recovery of the certain files. To get info (decrypt your files) contact us at [email protected] or [email protected] BTC wallet: 1CN2iQbBikFK9jM34Nb3WLx5DCenQLnbXp Ryuk
Wallets

  • 1CN2iQbBikFK9jM34Nb3WLx5DCenQLnbXp

Targets

    • Target
      2025-11-11_e5ca4e893cd35e75487a32d271316136_njrat_ryuk
    • Size 3.5MB
    • SHA256 ad07f0eb8387a61826688feefd439deb31364f5fb08e2a60ddf5444ed41eb6e7
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    ryukpersistenceransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Ryuk family

      ryuk

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks