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_826b73ec84d8b4157133ca36ebab1078_ryuk_JC.exe

  • Size

    18.2MB

  • Sample

    231022-kfw2caef8v

  • MD5

    826b73ec84d8b4157133ca36ebab1078

  • SHA1

    2631585eeff069175d8fca94b64af3318a6e4d43

  • SHA256

    ec249a2cc2f01e12595c2c7238b48122cd1c226a5e920067929664353890a0ac

  • SHA512

    eb21efa8f599da7172311677cc732728f410f400172527b3769dc2ff45cee3d90c9f446d7b5722c8758fc2d2a05540d81fc2dcf9291da283e91004486b48c2a9

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMG:9nwngnwnx

Score
10/10
persistenceransomware

Malware Config

Targets

    • Target

      NEAS.2023-09-06_826b73ec84d8b4157133ca36ebab1078_ryuk_JC.exe

    • Size

      18.2MB

    • MD5

      826b73ec84d8b4157133ca36ebab1078

    • SHA1

      2631585eeff069175d8fca94b64af3318a6e4d43

    • SHA256

      ec249a2cc2f01e12595c2c7238b48122cd1c226a5e920067929664353890a0ac

    • SHA512

      eb21efa8f599da7172311677cc732728f410f400172527b3769dc2ff45cee3d90c9f446d7b5722c8758fc2d2a05540d81fc2dcf9291da283e91004486b48c2a9

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMG:9nwngnwnx

    Score
    10/10
    persistenceransomware

    • Modifies WinLogon for persistence

      persistence

    • Renames multiple (279) files with added filename extension

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

      ransomware

    • Renames multiple (84) 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