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Overview

overview

10

Static

static

3

2023-08-26...JC.exe

windows7-x64

10

2023-08-26...JC.exe

windows10-2004-x64

10

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General

  • Target

    2023-08-26_1f0702f557828bfb7d885081eab158d6_ryuk_JC.exe

  • Size

    20.8MB

  • Sample

    231012-cd3gcabd94

  • MD5

    1f0702f557828bfb7d885081eab158d6

  • SHA1

    373ac2f11f2dabf51fdb6e5d351c2770b4d8d72e

  • SHA256

    927310d4a07260477232678066ff53cbd2ac76c82863ba19ea7af8ca1cf63576

  • SHA512

    919bc4695dc98387c5c306227081114ed9133165f9c6d4df9bcfc0eac0378e19a92c8f0defccd87f3426d7deeb2ad163d23e2a444ee6ddf996e406619a1e4803

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMR:9nwngnwnBRk

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-08-26_1f0702f557828bfb7d885081eab158d6_ryuk_JC.exe

    • Size

      20.8MB

    • MD5

      1f0702f557828bfb7d885081eab158d6

    • SHA1

      373ac2f11f2dabf51fdb6e5d351c2770b4d8d72e

    • SHA256

      927310d4a07260477232678066ff53cbd2ac76c82863ba19ea7af8ca1cf63576

    • SHA512

      919bc4695dc98387c5c306227081114ed9133165f9c6d4df9bcfc0eac0378e19a92c8f0defccd87f3426d7deeb2ad163d23e2a444ee6ddf996e406619a1e4803

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMR:9nwngnwnBRk

    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