Overview

overview

10

Static

static

3

2023-05-14...uk.exe

windows7-x64

10

2023-05-14...uk.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2023-05-14_c7b5a46dcf887e1aba9115f1efc728be_ryuk

  • Size

    3.2MB

  • Sample

    230515-sp4rjsgb32

  • MD5

    c7b5a46dcf887e1aba9115f1efc728be

  • SHA1

    ea16c158662a6906f4f95335a3afed2c64736a47

  • SHA256

    6639da68b98ddbbbbe33bd5c8594b5a92ba6d77e9240b95d14e7bbede5132aef

  • SHA512

    a4ce34b08016b059f5e7ee14aa2644aecf86dacde97e5bdb57242d56552b3c0f89db26318a6e00f6cf6e1bf808175606a65380c9576923128ded89ce747ae3f4

  • SSDEEP

    98304:9E2R1IMpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMl:9nzIA

Score
10/10
persistence

Malware Config

Targets

    • Target

      2023-05-14_c7b5a46dcf887e1aba9115f1efc728be_ryuk

    • Size

      3.2MB

    • MD5

      c7b5a46dcf887e1aba9115f1efc728be

    • SHA1

      ea16c158662a6906f4f95335a3afed2c64736a47

    • SHA256

      6639da68b98ddbbbbe33bd5c8594b5a92ba6d77e9240b95d14e7bbede5132aef

    • SHA512

      a4ce34b08016b059f5e7ee14aa2644aecf86dacde97e5bdb57242d56552b3c0f89db26318a6e00f6cf6e1bf808175606a65380c9576923128ded89ce747ae3f4

    • SSDEEP

      98304:9E2R1IMpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMl:9nzIA

    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 v6

Tasks