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Overview

overview

10

Static

static

3

2023-05-23...uk.exe

windows7-x64

10

2023-05-23...uk.exe

windows10-2004-x64

10

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General

  • Target

    2023-05-23_88d95f7a0e35ce04ea56c9e7f676f4b6_ryuk

  • Size

    2.4MB

  • Sample

    230524-gasj7aah58

  • MD5

    88d95f7a0e35ce04ea56c9e7f676f4b6

  • SHA1

    b4de893d1a4d9686653c97b47c8b50345b70312a

  • SHA256

    22ef374836ad7d281f73682692d80f9febe07f8b3910dfee9c06f63ac84e639d

  • SHA512

    d1de00af08e5380b2c5df27a03ff493e154dc386795b79fe3c3519be363c503320e37ea99da46342a00d7cd2a9d548a4df0ad95d63dfee749854da2c18cdad8b

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCu:eEtl9mRda12sX7hKB8NIyXbacAfF

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-05-23_88d95f7a0e35ce04ea56c9e7f676f4b6_ryuk

    • Size

      2.4MB

    • MD5

      88d95f7a0e35ce04ea56c9e7f676f4b6

    • SHA1

      b4de893d1a4d9686653c97b47c8b50345b70312a

    • SHA256

      22ef374836ad7d281f73682692d80f9febe07f8b3910dfee9c06f63ac84e639d

    • SHA512

      d1de00af08e5380b2c5df27a03ff493e154dc386795b79fe3c3519be363c503320e37ea99da46342a00d7cd2a9d548a4df0ad95d63dfee749854da2c18cdad8b

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCu:eEtl9mRda12sX7hKB8NIyXbacAfF

    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