Overview

overview

10

Static

static

3

2023-04-25...uk.exe

windows7-x64

10

2023-04-25...uk.exe

windows10-2004-x64

10

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General

  • Target

    2023-04-25_d053f9699bc84157223dd058b997ca5a_ryuk

  • Size

    2.5MB

  • Sample

    230426-efty4aeh94

  • MD5

    d053f9699bc84157223dd058b997ca5a

  • SHA1

    f1b9de35ae9a85f0feda561100f9d880820b513e

  • SHA256

    bb392f7abdc6e7c60edf5dfc06bd583dceda6f732f230afcf589983fd7a5fca0

  • SHA512

    5b491eb3e769ddc039c6fd787e3887c46b9abaeb48baaf776b169cdf41d87c30ced78d519afece7b5197d4e1eb101657bddb6d14fca79934a1128e3f98525079

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCL:eEtl9mRda12sX7hKB8NIyXbacAf8

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-04-25_d053f9699bc84157223dd058b997ca5a_ryuk

    • Size

      2.5MB

    • MD5

      d053f9699bc84157223dd058b997ca5a

    • SHA1

      f1b9de35ae9a85f0feda561100f9d880820b513e

    • SHA256

      bb392f7abdc6e7c60edf5dfc06bd583dceda6f732f230afcf589983fd7a5fca0

    • SHA512

      5b491eb3e769ddc039c6fd787e3887c46b9abaeb48baaf776b169cdf41d87c30ced78d519afece7b5197d4e1eb101657bddb6d14fca79934a1128e3f98525079

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MCL:eEtl9mRda12sX7hKB8NIyXbacAf8

    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