Overview

overview

10

Static

static

85d9b9e22f...e3.exe

windows7_x64

10

85d9b9e22f...e3.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    85d9b9e22f6b8e1f1d6a56d219d7c4d486b72657834050ce7652792536d0c8e3

  • Size

    385KB

  • Sample

    220220-fn4zpshaa2

  • MD5

    3895a370b0c69c7e23ebb5ca1598525d

  • SHA1

    0eea1b978df04a50f44657bbdc520905fdcd11cc

  • SHA256

    85d9b9e22f6b8e1f1d6a56d219d7c4d486b72657834050ce7652792536d0c8e3

  • SHA512

    bc87ca0f0a4ba081e92eaab959988f29c8c0d2d338a7d679025a3d4c5921d20856b55febcc41b19c67f6a5a9f8e89bb60a11e641f54d2de62949e37ce6305f1c

Score
10/10
ryukpersistenceransomware

Malware Config

Extracted

Path

C:\RyukReadMe.txt

Family

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: 15FC73BdkpDMUWmxo7e7gtLRtM8gQgXyb4 Ryuk No system is safe
Wallets

15FC73BdkpDMUWmxo7e7gtLRtM8gQgXyb4

Targets

    • Target

      85d9b9e22f6b8e1f1d6a56d219d7c4d486b72657834050ce7652792536d0c8e3

    • Size

      385KB

    • MD5

      3895a370b0c69c7e23ebb5ca1598525d

    • SHA1

      0eea1b978df04a50f44657bbdc520905fdcd11cc

    • SHA256

      85d9b9e22f6b8e1f1d6a56d219d7c4d486b72657834050ce7652792536d0c8e3

    • SHA512

      bc87ca0f0a4ba081e92eaab959988f29c8c0d2d338a7d679025a3d4c5921d20856b55febcc41b19c67f6a5a9f8e89bb60a11e641f54d2de62949e37ce6305f1c

    Score
    10/10
    ryukpersistenceransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Executes dropped EXE

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks