Overview

overview

10

Static

static

3

2023-08-26...JC.exe

windows7-x64

10

2023-08-26...JC.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    2023-08-26_c9a2b1577b0c3407573e1931785c3890_ryuk_JC.exe

  • Size

    18.5MB

  • Sample

    230929-xv8d5sea5z

  • MD5

    c9a2b1577b0c3407573e1931785c3890

  • SHA1

    5890a6adab848976960c385b573bf6a49b52b713

  • SHA256

    dfa4717bf876c2827b5ac479db3e79ccb5e66c1628372cc6f7549254828e43bb

  • SHA512

    da252901be72b184ca908b0decf3a94b0065965367dad1ed622fa77df511aae494a74984eab3c6a67c2447c2caf2a38590f5bdf06ef7ff5d743fb42db9909796

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMy:9nwngnwnL

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-08-26_c9a2b1577b0c3407573e1931785c3890_ryuk_JC.exe

    • Size

      18.5MB

    • MD5

      c9a2b1577b0c3407573e1931785c3890

    • SHA1

      5890a6adab848976960c385b573bf6a49b52b713

    • SHA256

      dfa4717bf876c2827b5ac479db3e79ccb5e66c1628372cc6f7549254828e43bb

    • SHA512

      da252901be72b184ca908b0decf3a94b0065965367dad1ed622fa77df511aae494a74984eab3c6a67c2447c2caf2a38590f5bdf06ef7ff5d743fb42db9909796

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMy:9nwngnwnL

    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