Overview

overview

10

Static

static

b8e463789a...d8.exe

windows7_x64

10

b8e463789a...d8.exe

windows10-2004_x64

7

Sharing

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General

  • Target

    b8e463789a076b16a90d1aae73cea9d3880ac0ead1fd16587b8cd79e37a1a3d8

  • Size

    168KB

  • Sample

    220220-daxx5aghfp

  • MD5

    958c594909933d4c82e93c22850194aa

  • SHA1

    d7c5fa9df1c79a7d0c178d0b7a2fe6d104d35278

  • SHA256

    b8e463789a076b16a90d1aae73cea9d3880ac0ead1fd16587b8cd79e37a1a3d8

  • SHA512

    b8bc89d574b3838cd219f276a348f0438fa2963bf7d7ee17ca4662ed3a00339455f587a0cd7459c0da5b468e5f0ff718285120ac972ae3c7c170e375110f906b

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: 1LKULheYnNtJXgQNWMo24MeLrBBCouECH7 Ryuk No system is safe
Wallets

1LKULheYnNtJXgQNWMo24MeLrBBCouECH7

Targets

    • Target

      b8e463789a076b16a90d1aae73cea9d3880ac0ead1fd16587b8cd79e37a1a3d8

    • Size

      168KB

    • MD5

      958c594909933d4c82e93c22850194aa

    • SHA1

      d7c5fa9df1c79a7d0c178d0b7a2fe6d104d35278

    • SHA256

      b8e463789a076b16a90d1aae73cea9d3880ac0ead1fd16587b8cd79e37a1a3d8

    • SHA512

      b8bc89d574b3838cd219f276a348f0438fa2963bf7d7ee17ca4662ed3a00339455f587a0cd7459c0da5b468e5f0ff718285120ac972ae3c7c170e375110f906b

    Score
    10/10
    ryukpersistenceransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • 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