Overview

overview

10

Static

static

3

NEAS.2023-...JC.exe

windows7-x64

10

NEAS.2023-...JC.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    NEAS.2023-09-08_27da99119d8e3861ce4ae256eaebc77c_ryuk_JC.exe

  • Size

    21.5MB

  • Sample

    231023-zg7lssfc31

  • MD5

    27da99119d8e3861ce4ae256eaebc77c

  • SHA1

    2e0af5f2e0ab966a223d4859fc74b72704163688

  • SHA256

    e23c765efdf5a2dad367a83efeeebc6ac53bdc4bbdc6c42cc2d9083379451b99

  • SHA512

    e8835a23ff94ea55d03a8dd64603e5c6c825a059b1902df7ad606f06228af284e51c5c5faccf88a52f806c4e19d6c6740755f88b8a4bd4441d1f374dc59f2c06

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMm:9nwngnwnBRp

Score
10/10
persistenceransomware

Malware Config

Targets

    • Target

      NEAS.2023-09-08_27da99119d8e3861ce4ae256eaebc77c_ryuk_JC.exe

    • Size

      21.5MB

    • MD5

      27da99119d8e3861ce4ae256eaebc77c

    • SHA1

      2e0af5f2e0ab966a223d4859fc74b72704163688

    • SHA256

      e23c765efdf5a2dad367a83efeeebc6ac53bdc4bbdc6c42cc2d9083379451b99

    • SHA512

      e8835a23ff94ea55d03a8dd64603e5c6c825a059b1902df7ad606f06228af284e51c5c5faccf88a52f806c4e19d6c6740755f88b8a4bd4441d1f374dc59f2c06

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMm:9nwngnwnBRp

    Score
    10/10
    persistenceransomware

    • Modifies WinLogon for persistence

      persistence

    • Renames multiple (265) files with added filename extension

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

      ransomware

    • 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