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_efb6199b2d91dc194d6602abe0554797_ryuk_JC.exe

  • Size

    20.8MB

  • Sample

    231001-zx219afc78

  • MD5

    efb6199b2d91dc194d6602abe0554797

  • SHA1

    3f161d997a45b224ba083e97f6e09082e487e009

  • SHA256

    cd184bfbd69579b92d2e8536af03917c16ed65f975454bade24dc8ea5147dc07

  • SHA512

    69a10d08660e933f050fdec5d51d48938693a4bd1cd84f6c2e41a3334a4b6e6acf969a7f2abe2b14badbe3f9bbc8e1d4febd22db33449eaa7bc9b45a58d18f5d

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMM:9nwngnwnBR/

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-08-26_efb6199b2d91dc194d6602abe0554797_ryuk_JC.exe

    • Size

      20.8MB

    • MD5

      efb6199b2d91dc194d6602abe0554797

    • SHA1

      3f161d997a45b224ba083e97f6e09082e487e009

    • SHA256

      cd184bfbd69579b92d2e8536af03917c16ed65f975454bade24dc8ea5147dc07

    • SHA512

      69a10d08660e933f050fdec5d51d48938693a4bd1cd84f6c2e41a3334a4b6e6acf969a7f2abe2b14badbe3f9bbc8e1d4febd22db33449eaa7bc9b45a58d18f5d

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMM:9nwngnwnBR/

    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