Overview

overview

10

Static

static

3

2024-12-17...uk.exe

windows10-ltsc 2021-x64

10

Sharing

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General

  • Target
    241217-w2srlatphz_pw_infected.zip
  • Size 199KB
  • Sample250130-xpjhtssjcj
  • SHA256 1d619909920477f1c13c79e88a8fd911d608dfb59f81c68c4f796a9f87affdef
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
ryukdefense_evasiondiscoveryexecutionimpactpersistenceransomware

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: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe
Wallets

  • 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

Targets

    • Target
      2024-12-17_67164c4680d767fcc5dbe48c3586444c_luca-stealer_ryuk
    • Size 384KB
    • SHA256 9c21c7149cf5980ee64d5fbb3f78a336b122cf7e92335718bcc5fa45e9dafb25
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    ryukdefense_evasiondiscoveryexecutionimpactpersistenceransomware

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Ryuk family

      ryuk

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Adds Run key to start application

      persistence
    behavioral1

MITRE ATT&CK Enterprise v15

Tasks