Overview

overview

10

Static

static

46f4bff5e7...38.exe

windows7_x64

10

46f4bff5e7...38.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    46f4bff5e7232f725ea596b736d95e59f4ff45dc49c93ba275a4360216d76238

  • Size

    170KB

  • Sample

    220220-jna86sbcdn

  • MD5

    10bec3496015cbe868396b2b492b7c7d

  • SHA1

    51ca1c61c5cb3be6a27ab8ea921e41bf2598f023

  • SHA256

    46f4bff5e7232f725ea596b736d95e59f4ff45dc49c93ba275a4360216d76238

  • SHA512

    907d9759db4be17929f6418438791fff079f0ddb6bb8aff175389f41742c95229afd1dcd72a72193f0cdd5e225555781189244ecb9a3991d62f82db1fcd790b1

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: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe
Wallets

14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

Targets

    • Target

      46f4bff5e7232f725ea596b736d95e59f4ff45dc49c93ba275a4360216d76238

    • Size

      170KB

    • MD5

      10bec3496015cbe868396b2b492b7c7d

    • SHA1

      51ca1c61c5cb3be6a27ab8ea921e41bf2598f023

    • SHA256

      46f4bff5e7232f725ea596b736d95e59f4ff45dc49c93ba275a4360216d76238

    • SHA512

      907d9759db4be17929f6418438791fff079f0ddb6bb8aff175389f41742c95229afd1dcd72a72193f0cdd5e225555781189244ecb9a3991d62f82db1fcd790b1

    Score
    10/10
    ryukpersistenceransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • 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 Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks