General

  • Target

    43a3b16216f966be5ec1b394f31d521877ba20894f218641fa8f5e6928279dc5

  • Size

    170KB

  • Sample

    220220-jtvvrsbdar

  • MD5

    08fda98dfedd3e304a7128e4918fe1bc

  • SHA1

    087793d8fdae310ee195f3e4c2d93395318f22a2

  • SHA256

    43a3b16216f966be5ec1b394f31d521877ba20894f218641fa8f5e6928279dc5

  • SHA512

    e39b8cca6edd9540e4259974d9dda28edf14a4de1bc0c1d5f4f8f06bde02c24dfc3e439be606a201946d45446f73eae9b005b0e681f6128d41fe3cd29b947ce4

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 WayneEvenson@protonmail.com or WayneEvenson@tutanota.com BTC wallet: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe
Emails

WayneEvenson@protonmail.com

WayneEvenson@tutanota.com

Wallets

14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

Targets

    • Target

      43a3b16216f966be5ec1b394f31d521877ba20894f218641fa8f5e6928279dc5

    • Size

      170KB

    • MD5

      08fda98dfedd3e304a7128e4918fe1bc

    • SHA1

      087793d8fdae310ee195f3e4c2d93395318f22a2

    • SHA256

      43a3b16216f966be5ec1b394f31d521877ba20894f218641fa8f5e6928279dc5

    • SHA512

      e39b8cca6edd9540e4259974d9dda28edf14a4de1bc0c1d5f4f8f06bde02c24dfc3e439be606a201946d45446f73eae9b005b0e681f6128d41fe3cd29b947ce4

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Adds Run key to start application

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Tasks