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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_46cbdfd8071a9b98291348537f82812a_ryuk_JC.exe

  • Size

    18.7MB

  • Sample

    231023-vkhdvsah91

  • MD5

    46cbdfd8071a9b98291348537f82812a

  • SHA1

    e557e852b7449608764ae50cc3ec25760895bf0d

  • SHA256

    335d423cbdace888958796c1d23ca98217be3118fb421498195ec57f10d64b1e

  • SHA512

    de3f2308df02aeb00d4fa140246de05c80d2504ddca83c91ccd0163b3ca534f0df52b60e012789de4069a6f549dfbcaf90a7e7affa4aabf0e7de453935b4ba32

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzM2:9nwngnwnX

Score
10/10
persistenceransomware

Malware Config

Targets

    • Target

      NEAS.2023-09-06_46cbdfd8071a9b98291348537f82812a_ryuk_JC.exe

    • Size

      18.7MB

    • MD5

      46cbdfd8071a9b98291348537f82812a

    • SHA1

      e557e852b7449608764ae50cc3ec25760895bf0d

    • SHA256

      335d423cbdace888958796c1d23ca98217be3118fb421498195ec57f10d64b1e

    • SHA512

      de3f2308df02aeb00d4fa140246de05c80d2504ddca83c91ccd0163b3ca534f0df52b60e012789de4069a6f549dfbcaf90a7e7affa4aabf0e7de453935b4ba32

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzM2:9nwngnwnX

    Score
    10/10
    persistenceransomware

    • Modifies WinLogon for persistence

      persistence

    • Renames multiple (826) 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