Overview

overview

10

Static

static

3

2023-05-19...uk.exe

windows7-x64

10

2023-05-19...uk.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2023-05-19_78f62bf75fa356e549a5fc5645592191_ryuk

  • Size

    2.4MB

  • Sample

    230520-c5xeeacf7z

  • MD5

    78f62bf75fa356e549a5fc5645592191

  • SHA1

    145ee8c5d15c18e8d364771cb2364ee8e937c01f

  • SHA256

    5decd9e336a10f617700485bb0c1488167dda07be2f92c02c2914d78bac3e288

  • SHA512

    f1140ccd3e598060bec07f5ccb096b8dc358d13a8bb405f584d8a9a503432ca77168a8a1fd38594304efce249e868b2bf083280d8bb90aa82863d5267c324821

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCw:eEtl9mRda12sX7hKB8NIyXbacAf

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-05-19_78f62bf75fa356e549a5fc5645592191_ryuk

    • Size

      2.4MB

    • MD5

      78f62bf75fa356e549a5fc5645592191

    • SHA1

      145ee8c5d15c18e8d364771cb2364ee8e937c01f

    • SHA256

      5decd9e336a10f617700485bb0c1488167dda07be2f92c02c2914d78bac3e288

    • SHA512

      f1140ccd3e598060bec07f5ccb096b8dc358d13a8bb405f584d8a9a503432ca77168a8a1fd38594304efce249e868b2bf083280d8bb90aa82863d5267c324821

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCw:eEtl9mRda12sX7hKB8NIyXbacAf

    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