Overview

overview

10

Static

static

aa76633d91...35.exe

windows7_x64

10

aa76633d91...35.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    aa76633d91e96a6e583883381639329afc97f8bbda699c74577f32f35610df35

  • Size

    168KB

  • Sample

    220220-d18gjsgcc6

  • MD5

    226a208a5421b06f3e2189f1ce516ae3

  • SHA1

    5b375d13a7a92962a4bbd7dac44e0c340e1de8b9

  • SHA256

    aa76633d91e96a6e583883381639329afc97f8bbda699c74577f32f35610df35

  • SHA512

    537351deba56379b58e98ecb1d885cab6ced7c406071477d69b33ea8b98fd5aa82b684a2c8503b188dba71c9c88cdacd94c67358ce9166b64afff3ef719fa1c4

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

      aa76633d91e96a6e583883381639329afc97f8bbda699c74577f32f35610df35

    • Size

      168KB

    • MD5

      226a208a5421b06f3e2189f1ce516ae3

    • SHA1

      5b375d13a7a92962a4bbd7dac44e0c340e1de8b9

    • SHA256

      aa76633d91e96a6e583883381639329afc97f8bbda699c74577f32f35610df35

    • SHA512

      537351deba56379b58e98ecb1d885cab6ced7c406071477d69b33ea8b98fd5aa82b684a2c8503b188dba71c9c88cdacd94c67358ce9166b64afff3ef719fa1c4

    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

3
T1012

System Information Discovery

4
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks