Overview

overview

10

Static

static

3

2023-08-26...JC.exe

windows7-x64

10

2023-08-26...JC.exe

windows10-2004-x64

10

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General

  • Target

    2023-08-26_3b441b44f5c9f1bb334fa8a4c86deb7d_ryuk_JC.exe

  • Size

    5.7MB

  • Sample

    231012-byy4zsgb2t

  • MD5

    3b441b44f5c9f1bb334fa8a4c86deb7d

  • SHA1

    4496ebb48c982c2b62d0b4738604a5a681055fd3

  • SHA256

    94bbc2d765e6fefe534ae335213851859034f926b62e27c1f7efed2dd624645c

  • SHA512

    0c45504f815fd24b45295dee90f8fc65781b2fd9006153f0b48f972cb40447646f942b5c9655dfad44e0e25936946eebf70345e52e5774848b595f993894c977

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMe:9nU

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-08-26_3b441b44f5c9f1bb334fa8a4c86deb7d_ryuk_JC.exe

    • Size

      5.7MB

    • MD5

      3b441b44f5c9f1bb334fa8a4c86deb7d

    • SHA1

      4496ebb48c982c2b62d0b4738604a5a681055fd3

    • SHA256

      94bbc2d765e6fefe534ae335213851859034f926b62e27c1f7efed2dd624645c

    • SHA512

      0c45504f815fd24b45295dee90f8fc65781b2fd9006153f0b48f972cb40447646f942b5c9655dfad44e0e25936946eebf70345e52e5774848b595f993894c977

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMe:9nU

    Score
    10/10
    persistence

    • Modifies WinLogon for persistence

      persistence

    • 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