Overview

overview

10

Static

static

3

NEAS.2023-...JC.exe

windows7-x64

10

NEAS.2023-...JC.exe

windows10-2004-x64

1

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General

  • Target

    NEAS.2023-09-06_c9209531da85731420d7fdeebedda17a_ryuk_JC.exe

  • Size

    2.8MB

  • Sample

    231031-tcjraacg47

  • MD5

    c9209531da85731420d7fdeebedda17a

  • SHA1

    6b8b922495649b0d131508b56fd9a750f7b608ee

  • SHA256

    0e360bc442a2b8ea060ea8a27c5f73b2ae67325f4c2a5997d25218c69e4de1c1

  • SHA512

    c06f783fe303946d1633a8936f0cb15bec9faf3eb7bec40d818e9144e44a5c2c1420733f807f61fbf42181daaa6aabb5a08894c806e1efe734ae95809d51452a

  • SSDEEP

    12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MC7:eEtl9mRda12sX7hKB8NIyXbacAfu

Score
10/10
persistenceransomware

Malware Config

Targets

    • Target

      NEAS.2023-09-06_c9209531da85731420d7fdeebedda17a_ryuk_JC.exe

    • Size

      2.8MB

    • MD5

      c9209531da85731420d7fdeebedda17a

    • SHA1

      6b8b922495649b0d131508b56fd9a750f7b608ee

    • SHA256

      0e360bc442a2b8ea060ea8a27c5f73b2ae67325f4c2a5997d25218c69e4de1c1

    • SHA512

      c06f783fe303946d1633a8936f0cb15bec9faf3eb7bec40d818e9144e44a5c2c1420733f807f61fbf42181daaa6aabb5a08894c806e1efe734ae95809d51452a

    • SSDEEP

      12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MC7:eEtl9mRda12sX7hKB8NIyXbacAfu

    Score
    10/10
    persistenceransomware

    • Modifies WinLogon for persistence

      persistence

    • 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