Overview

overview

10

Static

static

3

2023-08-26...JC.exe

windows7-x64

10

2023-08-26...JC.exe

windows10-2004-x64

10

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General

  • Target

    2023-08-26_766570ee2d440ad20d9c66db404aed77_ryuk_JC.exe

  • Size

    18.3MB

  • Sample

    231011-q1y94acd86

  • MD5

    766570ee2d440ad20d9c66db404aed77

  • SHA1

    edcc78d12e0db840d0bba98f32e55d5bb6705f73

  • SHA256

    7a066da4ee12ee941bf942f798ab84828c09f60e05f948dc97dff85d4eac4deb

  • SHA512

    d1e6d22cfa1c7a6bf9807f2da3d688beae4c2394ef26a13608a5d5046afc9d18253810a35576d924b166f47136e7cd0acdc3957f8e3468a41288cef1e5689264

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMJ:9nwngnwnO

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-08-26_766570ee2d440ad20d9c66db404aed77_ryuk_JC.exe

    • Size

      18.3MB

    • MD5

      766570ee2d440ad20d9c66db404aed77

    • SHA1

      edcc78d12e0db840d0bba98f32e55d5bb6705f73

    • SHA256

      7a066da4ee12ee941bf942f798ab84828c09f60e05f948dc97dff85d4eac4deb

    • SHA512

      d1e6d22cfa1c7a6bf9807f2da3d688beae4c2394ef26a13608a5d5046afc9d18253810a35576d924b166f47136e7cd0acdc3957f8e3468a41288cef1e5689264

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMJ:9nwngnwnO

    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 v15

Tasks