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Overview

overview

10

Static

static

3

2023-05-12...uk.exe

windows7-x64

10

2023-05-12...uk.exe

windows10-2004-x64

10

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General

  • Target

    2023-05-12_0783ee1a1636154c369af767016efbf1_ryuk

  • Size

    3.1MB

  • Sample

    230513-de3n6shd9t

  • MD5

    0783ee1a1636154c369af767016efbf1

  • SHA1

    b1dc1648219cf8244b9cd55681717d4c2779df05

  • SHA256

    71ecee8c350c7aeeb32c902a2a5c97a1541603ab89db74acfa10e7e7e37e5e45

  • SHA512

    5bc2c599e4be799ec8beb31bef1ea9aa5f2cc9ad29c1e357bea01362f605cefd529d25c8284080c25d3e820cc6b3587ad99c462bf281aaf40c33e81ab0852514

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCR:eEtl9mRda12sX7hKB8NIyXbacAfa

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-05-12_0783ee1a1636154c369af767016efbf1_ryuk

    • Size

      3.1MB

    • MD5

      0783ee1a1636154c369af767016efbf1

    • SHA1

      b1dc1648219cf8244b9cd55681717d4c2779df05

    • SHA256

      71ecee8c350c7aeeb32c902a2a5c97a1541603ab89db74acfa10e7e7e37e5e45

    • SHA512

      5bc2c599e4be799ec8beb31bef1ea9aa5f2cc9ad29c1e357bea01362f605cefd529d25c8284080c25d3e820cc6b3587ad99c462bf281aaf40c33e81ab0852514

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCR:eEtl9mRda12sX7hKB8NIyXbacAfa

    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