Overview

overview

10

Static

static

3

2023-05-25...uk.exe

windows7-x64

10

2023-05-25...uk.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2023-05-25_9b396edbfbc4bcc009548e9bc327260c_ryuk

  • Size

    2.4MB

  • Sample

    230527-c25llsae8z

  • MD5

    9b396edbfbc4bcc009548e9bc327260c

  • SHA1

    96e802cc1a59dcef13e38fe7fee46203fb4949a5

  • SHA256

    ae185a5a9cb0dfe4c693ebe295bea8154efc21b7f18f0cf4ba222889c6037cde

  • SHA512

    d8c50d6362bc5347b7946c512ace83032f7b83ad24d861b6382c6b663a3336a21c66d483b3d12c289c557b5a38094862a310d051fce5ec2026c6373d52ee8198

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCh:eEtl9mRda12sX7hKB8NIyXbacAf2

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-05-25_9b396edbfbc4bcc009548e9bc327260c_ryuk

    • Size

      2.4MB

    • MD5

      9b396edbfbc4bcc009548e9bc327260c

    • SHA1

      96e802cc1a59dcef13e38fe7fee46203fb4949a5

    • SHA256

      ae185a5a9cb0dfe4c693ebe295bea8154efc21b7f18f0cf4ba222889c6037cde

    • SHA512

      d8c50d6362bc5347b7946c512ace83032f7b83ad24d861b6382c6b663a3336a21c66d483b3d12c289c557b5a38094862a310d051fce5ec2026c6373d52ee8198

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCh:eEtl9mRda12sX7hKB8NIyXbacAf2

    Score
    10/10
    persistence

    • Modifies WinLogon for persistence

      persistence

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks