Overview

overview

10

Static

static

3

2023-08-26...JC.exe

windows7-x64

10

2023-08-26...JC.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2023-08-26_c3e5c22c831fed14f77199650ef3ee7f_ryuk_JC.exe

  • Size

    3.4MB

  • Sample

    230929-xhyn6sdh5v

  • MD5

    c3e5c22c831fed14f77199650ef3ee7f

  • SHA1

    17c8b204e8010e3e76ac561032e0c3d5cd104a79

  • SHA256

    657b2c817a34c5d350ab4f16af2ef708a4d7a7fa3501448ba57b4d07aac2fa8d

  • SHA512

    83858378c0c82005e3edb2c9c8ed444821d2497828eee7cee6d2dff329d89228d21a1e1ab4b348f639af4eec7011febd600221a3d7f35297daa076187367e3c6

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMt:9nn

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-08-26_c3e5c22c831fed14f77199650ef3ee7f_ryuk_JC.exe

    • Size

      3.4MB

    • MD5

      c3e5c22c831fed14f77199650ef3ee7f

    • SHA1

      17c8b204e8010e3e76ac561032e0c3d5cd104a79

    • SHA256

      657b2c817a34c5d350ab4f16af2ef708a4d7a7fa3501448ba57b4d07aac2fa8d

    • SHA512

      83858378c0c82005e3edb2c9c8ed444821d2497828eee7cee6d2dff329d89228d21a1e1ab4b348f639af4eec7011febd600221a3d7f35297daa076187367e3c6

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMt:9nn

    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