Overview

overview

10

Static

static

4517460c76...f3.exe

windows7_x64

10

4517460c76...f3.exe

windows10-2004_x64

8

Sharing

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General

  • Target

    4517460c769903a54b14a2673a89bbb8d857be18837d0015733f2445ba17b2f3

  • Size

    396KB

  • Sample

    220220-jsb19sace2

  • MD5

    79e52b0a6a08e5213f6c48fd70c037f4

  • SHA1

    81150445f316941f08180e99d379bab5b47ffecf

  • SHA256

    4517460c769903a54b14a2673a89bbb8d857be18837d0015733f2445ba17b2f3

  • SHA512

    c2570e299d7809a3b1b5a1f9e7aa85fcad40ef781ccd2ed2ecb10a1381753cf98cbc6ae025109a6da12561349f07a8b5327d2f6808581eb40dbdd03474019533

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

      4517460c769903a54b14a2673a89bbb8d857be18837d0015733f2445ba17b2f3

    • Size

      396KB

    • MD5

      79e52b0a6a08e5213f6c48fd70c037f4

    • SHA1

      81150445f316941f08180e99d379bab5b47ffecf

    • SHA256

      4517460c769903a54b14a2673a89bbb8d857be18837d0015733f2445ba17b2f3

    • SHA512

      c2570e299d7809a3b1b5a1f9e7aa85fcad40ef781ccd2ed2ecb10a1381753cf98cbc6ae025109a6da12561349f07a8b5327d2f6808581eb40dbdd03474019533

    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