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Overview

overview

10

Static

static

3

2023-05-22...uk.exe

windows7-x64

10

2023-05-22...uk.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2023-05-22_cb773320abdd02921cdd88a9483c6621_ryuk

  • Size

    4.4MB

  • Sample

    230523-dqcxwsee3y

  • MD5

    cb773320abdd02921cdd88a9483c6621

  • SHA1

    73ed601c8fd4c92a91d10950d572203a0ebc88c8

  • SHA256

    d8c57e5c4eb091474db1e65a7fd85b43c1656ebe5f5868e7f56b54b95483c2a0

  • SHA512

    a342f625d6a3d631b443686af7661d9c6e3cffb4b07a4d2cd674c800410290faf6f10245fb066adff65e651ef107282e2359f5aca359dd38b7e9d95032dac0f7

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCl:eEtl9mRda12sX7hKB8NIyXbacAfW5

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-05-22_cb773320abdd02921cdd88a9483c6621_ryuk

    • Size

      4.4MB

    • MD5

      cb773320abdd02921cdd88a9483c6621

    • SHA1

      73ed601c8fd4c92a91d10950d572203a0ebc88c8

    • SHA256

      d8c57e5c4eb091474db1e65a7fd85b43c1656ebe5f5868e7f56b54b95483c2a0

    • SHA512

      a342f625d6a3d631b443686af7661d9c6e3cffb4b07a4d2cd674c800410290faf6f10245fb066adff65e651ef107282e2359f5aca359dd38b7e9d95032dac0f7

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCl:eEtl9mRda12sX7hKB8NIyXbacAfW5

    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