Overview

overview

10

Static

static

3

NEAS.2023-...JC.exe

windows7-x64

10

NEAS.2023-...JC.exe

windows10-2004-x64

10

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General

  • Target

    NEAS.2023-09-06_595dee42312bb9a1844925b714b60fad_ryuk_JC.exe

  • Size

    20.8MB

  • Sample

    231023-trljesab6v

  • MD5

    595dee42312bb9a1844925b714b60fad

  • SHA1

    cd59e8de6b3bc53ad75b20819fa7dff189fa28e2

  • SHA256

    925f82f1567ac60bd080aa23c22894e625fc496f5e0d74df9d8eb25f160420dc

  • SHA512

    9744cc334d0bb01daa8e2009ba0372fc4b92c85364aeb151afedc0bc7782be9636112fccce393fad56f9ef854fc39058121120c7d9f2f82fcf9b1738a68ef268

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMf:9nwngnwnBRm

Score
10/10
persistenceransomware

Malware Config

Targets

    • Target

      NEAS.2023-09-06_595dee42312bb9a1844925b714b60fad_ryuk_JC.exe

    • Size

      20.8MB

    • MD5

      595dee42312bb9a1844925b714b60fad

    • SHA1

      cd59e8de6b3bc53ad75b20819fa7dff189fa28e2

    • SHA256

      925f82f1567ac60bd080aa23c22894e625fc496f5e0d74df9d8eb25f160420dc

    • SHA512

      9744cc334d0bb01daa8e2009ba0372fc4b92c85364aeb151afedc0bc7782be9636112fccce393fad56f9ef854fc39058121120c7d9f2f82fcf9b1738a68ef268

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMf:9nwngnwnBRm

    Score
    10/10
    persistenceransomware

    • Modifies WinLogon for persistence

      persistence

    • Renames multiple (711) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Renames multiple (91) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • 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