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_729c3e9acf75b2f8bef749495d3e5a58_ryuk_JC.exe

  • Size

    7.8MB

  • Sample

    231011-q4g5zsag8v

  • MD5

    729c3e9acf75b2f8bef749495d3e5a58

  • SHA1

    ea31999d40aca8a9bb2d92745e69472c222a444a

  • SHA256

    ba88cc7fd425db8fd8ee2c0a0920a1df16cdd2473ad33dd6019c1df913acf403

  • SHA512

    acfa3713bd1167f39d2c19da8e8f0870549187190149d22ad3c80e0e1e396aa0f131165992871227e0b04d82f41a38e56337d833df35f139a2397268e659efe9

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMd:9nwnY

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-08-26_729c3e9acf75b2f8bef749495d3e5a58_ryuk_JC.exe

    • Size

      7.8MB

    • MD5

      729c3e9acf75b2f8bef749495d3e5a58

    • SHA1

      ea31999d40aca8a9bb2d92745e69472c222a444a

    • SHA256

      ba88cc7fd425db8fd8ee2c0a0920a1df16cdd2473ad33dd6019c1df913acf403

    • SHA512

      acfa3713bd1167f39d2c19da8e8f0870549187190149d22ad3c80e0e1e396aa0f131165992871227e0b04d82f41a38e56337d833df35f139a2397268e659efe9

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMd:9nwnY

    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