General

  • Target

    53e5bfb0be32202aaeff40f267454abdd12e58e50d295988ad111718ad886a74

  • Size

    170KB

  • Sample

    220220-h5rf2saab5

  • MD5

    cbc4a644b35edb3610d76068a9bd5592

  • SHA1

    91e6feadc8900505902c626737d6a98f6244cfd6

  • SHA256

    53e5bfb0be32202aaeff40f267454abdd12e58e50d295988ad111718ad886a74

  • SHA512

    85ad10e59645d50728bb9145553fa87c6e105a8555aba0d20b349223099109c4d3d4dde56c2cee2d71e5208372dae7db96b0dd4cb12389e767f132305ba85291

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

      53e5bfb0be32202aaeff40f267454abdd12e58e50d295988ad111718ad886a74

    • Size

      170KB

    • MD5

      cbc4a644b35edb3610d76068a9bd5592

    • SHA1

      91e6feadc8900505902c626737d6a98f6244cfd6

    • SHA256

      53e5bfb0be32202aaeff40f267454abdd12e58e50d295988ad111718ad886a74

    • SHA512

      85ad10e59645d50728bb9145553fa87c6e105a8555aba0d20b349223099109c4d3d4dde56c2cee2d71e5208372dae7db96b0dd4cb12389e767f132305ba85291

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

    • 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

1
T1012

System Information Discovery

2
T1082

Tasks