Overview

overview

10

Static

static

23e7c1b52d...c8.exe

windows7_x64

10

23e7c1b52d...c8.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    23e7c1b52d6ea8adec233eaff38c6a00153de3b99f51b02fe6a297ee5210f9c8

  • Size

    170KB

  • Sample

    220220-k9ts3sahc3

  • MD5

    c4a5c4a20aa92002fd73ffa1eae12875

  • SHA1

    de32df32c920015197ed7304d67ac3475876502b

  • SHA256

    23e7c1b52d6ea8adec233eaff38c6a00153de3b99f51b02fe6a297ee5210f9c8

  • SHA512

    0c8b7702f0f8cfb715f4c7d2c254d3224c7f4f2aacc6cef30f774be8d3210b2defacbabf812d936d590ec720ab7c19c69ae8844f5a55993d0e31d3041fdf9e0b

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

      23e7c1b52d6ea8adec233eaff38c6a00153de3b99f51b02fe6a297ee5210f9c8

    • Size

      170KB

    • MD5

      c4a5c4a20aa92002fd73ffa1eae12875

    • SHA1

      de32df32c920015197ed7304d67ac3475876502b

    • SHA256

      23e7c1b52d6ea8adec233eaff38c6a00153de3b99f51b02fe6a297ee5210f9c8

    • SHA512

      0c8b7702f0f8cfb715f4c7d2c254d3224c7f4f2aacc6cef30f774be8d3210b2defacbabf812d936d590ec720ab7c19c69ae8844f5a55993d0e31d3041fdf9e0b

    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