Overview

overview

10

Static

static

3

NEAS.NEAS2...JC.exe

windows7-x64

10

NEAS.NEAS2...JC.exe

windows10-2004-x64

10

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General

  • Target

    NEAS.NEAS2023-09-05_d9fe02c1a8336d3c565b042db1a9a494_ryukexe_JC.exe

  • Size

    20.9MB

  • Sample

    231031-2th53shb42

  • MD5

    d9fe02c1a8336d3c565b042db1a9a494

  • SHA1

    f2253793d91c6e75e9a26d395de49d93217b4ef2

  • SHA256

    5e509250c7d25d15ec435a89bb59dd8847a2300539ac1a7b5de405ea16474945

  • SHA512

    5e53a9f1a2b71eec4e2061628e245777c1d79835f8226b1c1edc7c15a4139cfba8099a924457577646ea29919d52babe7fda8d48db853daf39581caf45aea6c1

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMW:9nwngnwnBRX

Score
10/10
persistenceransomware

Malware Config

Targets

    • Target

      NEAS.NEAS2023-09-05_d9fe02c1a8336d3c565b042db1a9a494_ryukexe_JC.exe

    • Size

      20.9MB

    • MD5

      d9fe02c1a8336d3c565b042db1a9a494

    • SHA1

      f2253793d91c6e75e9a26d395de49d93217b4ef2

    • SHA256

      5e509250c7d25d15ec435a89bb59dd8847a2300539ac1a7b5de405ea16474945

    • SHA512

      5e53a9f1a2b71eec4e2061628e245777c1d79835f8226b1c1edc7c15a4139cfba8099a924457577646ea29919d52babe7fda8d48db853daf39581caf45aea6c1

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMW:9nwngnwnBRX

    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