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Overview

overview

10

Static

static

3

2023-05-11...uk.exe

windows7-x64

10

2023-05-11...uk.exe

windows10-2004-x64

10

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General

  • Target

    2023-05-11_cf96dc24ccb78aa865d9569a28da9168_ryuk

  • Size

    2.5MB

  • Sample

    230512-dc5ezsbe79

  • MD5

    cf96dc24ccb78aa865d9569a28da9168

  • SHA1

    c03b4338537fbf27aac2e0abbc26f27b9337e8b7

  • SHA256

    fcacdbc16d4a101aba2204a0bd7553f2102d435a339edbd2f1b699697a6ac7bd

  • SHA512

    263c7d8ba66605d9f5030f73a188d00039469092ea89fc5cd26412f089086adb9d187ec8f1ed0ae7961cb1c4cfdcf5162c77c2ebb0243e8c9fbe7101fe4badb5

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCH:eEtl9mRda12sX7hKB8NIyXbacAfk

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-05-11_cf96dc24ccb78aa865d9569a28da9168_ryuk

    • Size

      2.5MB

    • MD5

      cf96dc24ccb78aa865d9569a28da9168

    • SHA1

      c03b4338537fbf27aac2e0abbc26f27b9337e8b7

    • SHA256

      fcacdbc16d4a101aba2204a0bd7553f2102d435a339edbd2f1b699697a6ac7bd

    • SHA512

      263c7d8ba66605d9f5030f73a188d00039469092ea89fc5cd26412f089086adb9d187ec8f1ed0ae7961cb1c4cfdcf5162c77c2ebb0243e8c9fbe7101fe4badb5

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCH:eEtl9mRda12sX7hKB8NIyXbacAfk

    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