Overview

overview

10

Static

static

3

NEAS.2023-...JC.exe

windows7-x64

10

NEAS.2023-...JC.exe

windows10-2004-x64

1

Sharing

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General

  • Target

    NEAS.2023-09-08_91ab6febe9691789f6f10713bb8e8b9d_ryuk_JC.exe

  • Size

    21.6MB

  • Sample

    231023-vfrrqsag9t

  • MD5

    91ab6febe9691789f6f10713bb8e8b9d

  • SHA1

    20c6a00a66da95d9a46e0ce3313bf96a3dacacc8

  • SHA256

    30a71b6b457af7bdff63eeb575102adbe5187b105cb532080085dcf63d7a40e3

  • SHA512

    75b6fad0cae30279dd4f4020592402c57ade744a74f84af217aa391e3afd7fa65f6fd5cc43c9f28b03de8679f826678053d81d5146f11179f18c891c68bb04cb

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzM9:9nwngnwnBRe

Score
10/10
persistenceransomware

Malware Config

Targets

    • Target

      NEAS.2023-09-08_91ab6febe9691789f6f10713bb8e8b9d_ryuk_JC.exe

    • Size

      21.6MB

    • MD5

      91ab6febe9691789f6f10713bb8e8b9d

    • SHA1

      20c6a00a66da95d9a46e0ce3313bf96a3dacacc8

    • SHA256

      30a71b6b457af7bdff63eeb575102adbe5187b105cb532080085dcf63d7a40e3

    • SHA512

      75b6fad0cae30279dd4f4020592402c57ade744a74f84af217aa391e3afd7fa65f6fd5cc43c9f28b03de8679f826678053d81d5146f11179f18c891c68bb04cb

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzM9:9nwngnwnBRe

    Score
    10/10
    persistenceransomware

    • Modifies WinLogon for persistence

      persistence

    • Renames multiple (93) files with added filename extension

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

      ransomware

    • Drops startup file

    • 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