Overview

overview

10

Static

static

3af6d8ae48...94.exe

windows7_x64

10

3af6d8ae48...94.exe

windows10-2004_x64

8

Sharing

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General

  • Target

    3af6d8ae486dc533fdbb81ca77b33765b9652d173c490862b9b7ea9d42f46794

  • Size

    385KB

  • Sample

    220220-j9bf3abefl

  • MD5

    ab9efa39a5aecf383c095401c1b6c658

  • SHA1

    f72409d3048d4c62cc12ceee280750f44e7eb3fc

  • SHA256

    3af6d8ae486dc533fdbb81ca77b33765b9652d173c490862b9b7ea9d42f46794

  • SHA512

    f4ff7547104c9de4c018daa36e7d60612691c4e07573a2bfe7fdf7dbdad9380251dad76a44a97d4c1eb81c1cc4584ce8c41888c892cd4b947061b5fc90964bb2

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

      3af6d8ae486dc533fdbb81ca77b33765b9652d173c490862b9b7ea9d42f46794

    • Size

      385KB

    • MD5

      ab9efa39a5aecf383c095401c1b6c658

    • SHA1

      f72409d3048d4c62cc12ceee280750f44e7eb3fc

    • SHA256

      3af6d8ae486dc533fdbb81ca77b33765b9652d173c490862b9b7ea9d42f46794

    • SHA512

      f4ff7547104c9de4c018daa36e7d60612691c4e07573a2bfe7fdf7dbdad9380251dad76a44a97d4c1eb81c1cc4584ce8c41888c892cd4b947061b5fc90964bb2

    Score
    10/10
    ryukpersistenceransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • 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 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