Overview

overview

10

Static

static

1

2023-04-10...uk.exe

windows7-x64

10

2023-04-10...uk.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2023-04-10_542e249f71f8544bcd933e9945ae6c81_ryuk

  • Size

    2.9MB

  • Sample

    230413-fkzwksah3t

  • MD5

    542e249f71f8544bcd933e9945ae6c81

  • SHA1

    bc63c405faf431d4427a0693e542da34de28eadc

  • SHA256

    99a6f3a96ea04f8ae9e250375649ffc893ccf4fd577c1ccc0428d1b1bba8ae03

  • SHA512

    3ad2f8e433f0efbd2ea7dff3b9958475fd497ead7eb1b5e730cde04ca6d14d49703169d07eb266d4e929ef5fa470166cf38eb3a318c47bec3259f353d8d3cde8

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCb:eEtl9mRda12sX7hKB8NIyXbacAfut

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-04-10_542e249f71f8544bcd933e9945ae6c81_ryuk

    • Size

      2.9MB

    • MD5

      542e249f71f8544bcd933e9945ae6c81

    • SHA1

      bc63c405faf431d4427a0693e542da34de28eadc

    • SHA256

      99a6f3a96ea04f8ae9e250375649ffc893ccf4fd577c1ccc0428d1b1bba8ae03

    • SHA512

      3ad2f8e433f0efbd2ea7dff3b9958475fd497ead7eb1b5e730cde04ca6d14d49703169d07eb266d4e929ef5fa470166cf38eb3a318c47bec3259f353d8d3cde8

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCb:eEtl9mRda12sX7hKB8NIyXbacAfut

    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