Overview

overview

10

Static

static

64a52f1234...cb.exe

windows7_x64

10

64a52f1234...cb.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    64a52f12347a9a53bfb1adeecec2a3cd09b71f080c9c2cbd9f3f3eb2c24ee3cb

  • Size

    170KB

  • Sample

    220220-g95c2aaffl

  • MD5

    70aaa49f0a555839f4a1243687a93734

  • SHA1

    89f755b3dee1dfd4fc847510fec715165c915964

  • SHA256

    64a52f12347a9a53bfb1adeecec2a3cd09b71f080c9c2cbd9f3f3eb2c24ee3cb

  • SHA512

    f0b28badfe31f8bd0bb147e03d48f103da6e2e529c7bd568b9e6b7c63f495770bdb90633f27c1291cbd6871dae08f7e3ff72b113b80f6ae0e3de50aeda877372

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

      64a52f12347a9a53bfb1adeecec2a3cd09b71f080c9c2cbd9f3f3eb2c24ee3cb

    • Size

      170KB

    • MD5

      70aaa49f0a555839f4a1243687a93734

    • SHA1

      89f755b3dee1dfd4fc847510fec715165c915964

    • SHA256

      64a52f12347a9a53bfb1adeecec2a3cd09b71f080c9c2cbd9f3f3eb2c24ee3cb

    • SHA512

      f0b28badfe31f8bd0bb147e03d48f103da6e2e529c7bd568b9e6b7c63f495770bdb90633f27c1291cbd6871dae08f7e3ff72b113b80f6ae0e3de50aeda877372

    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