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_c961faae57f24a0f5f6469bcc43a4939_ryuk

  • Size

    2.5MB

  • Sample

    230520-c622aaaa73

  • MD5

    c961faae57f24a0f5f6469bcc43a4939

  • SHA1

    9784987377c221950a4dcde1a023647ef16ce729

  • SHA256

    b8a47bb3618fffa85551aff771213d71347ab072b793c0b20a95969da07d7a7f

  • SHA512

    07aa12ec4ed9f43bcbd84421a3883b13f917393c77254f6eea5dd2256a888d78b65406d67e50ad2c0c0d841c64f1e47ec8edf3d79bf998a007ef7f6151586bd3

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCA:eEtl9mRda12sX7hKB8NIyXbacAfT

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-05-19_c961faae57f24a0f5f6469bcc43a4939_ryuk

    • Size

      2.5MB

    • MD5

      c961faae57f24a0f5f6469bcc43a4939

    • SHA1

      9784987377c221950a4dcde1a023647ef16ce729

    • SHA256

      b8a47bb3618fffa85551aff771213d71347ab072b793c0b20a95969da07d7a7f

    • SHA512

      07aa12ec4ed9f43bcbd84421a3883b13f917393c77254f6eea5dd2256a888d78b65406d67e50ad2c0c0d841c64f1e47ec8edf3d79bf998a007ef7f6151586bd3

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCA:eEtl9mRda12sX7hKB8NIyXbacAfT

    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