Overview

overview

10

Static

static

3

2023-08-26...JC.exe

windows7-x64

10

2023-08-26...JC.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2023-08-26_16f9bd46e47e0368af2fc86153ca7cf1_ryuk_JC.exe

  • Size

    3.4MB

  • Sample

    230917-ndv8tace26

  • MD5

    16f9bd46e47e0368af2fc86153ca7cf1

  • SHA1

    d949cce77a56bb9b68688e8d77f52519ed7db37d

  • SHA256

    5ebd6fc63a9af36afe50922408496301da362bae1a9c7bd7b3306315f9dd805c

  • SHA512

    1a1a7652273349b1a517b3fe696986c22277d375ecfead5ea3975cccf8fb6ab7df22d8a540fbecc8b1b62b117ac26f021ea32eb1eb7e4debcbef47e0f980afa2

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMS:9nU

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-08-26_16f9bd46e47e0368af2fc86153ca7cf1_ryuk_JC.exe

    • Size

      3.4MB

    • MD5

      16f9bd46e47e0368af2fc86153ca7cf1

    • SHA1

      d949cce77a56bb9b68688e8d77f52519ed7db37d

    • SHA256

      5ebd6fc63a9af36afe50922408496301da362bae1a9c7bd7b3306315f9dd805c

    • SHA512

      1a1a7652273349b1a517b3fe696986c22277d375ecfead5ea3975cccf8fb6ab7df22d8a540fbecc8b1b62b117ac26f021ea32eb1eb7e4debcbef47e0f980afa2

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMS:9nU

    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 v15

Tasks