Overview

overview

7

Static

static

3

2024-11-21...uk.exe

windows7-x64

7

2024-11-21...uk.exe

windows10-2004-x64

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General

  • Target

    2024-11-21_852656b9342fa5b987d15b6c01565e60_cova_ryuk

  • Size

    577KB

  • Sample

    241121-mvcx5awken

  • MD5

    852656b9342fa5b987d15b6c01565e60

  • SHA1

    2a1404ccf09e8c9e616e9f4039d9b98a2e0fa2c8

  • SHA256

    d93f73c6469bd56ad4d1b9d07e4d5b271beb0c012d17c5576b18ebc35588e9ab

  • SHA512

    68eb9f0b61477978a583b8b5a8b2f3dbd51f7e5c23f6d96a4aec218c64ef5efa6db7be7fd3b7010fcf20607a1ca51cb6689b4e66b1f85e34bfdbedc0739d214d

  • SSDEEP

    12288:nctEagGmcl4gBF1BRnI6hAVebOe1AFdMpUrMZ9uEIZc0b:aR+cl7X1BRnI6hmebOe1AbHWuEIZcW

Score
7/10
bootkitpersistence

Malware Config

Targets

    • Target

      2024-11-21_852656b9342fa5b987d15b6c01565e60_cova_ryuk

    • Size

      577KB

    • MD5

      852656b9342fa5b987d15b6c01565e60

    • SHA1

      2a1404ccf09e8c9e616e9f4039d9b98a2e0fa2c8

    • SHA256

      d93f73c6469bd56ad4d1b9d07e4d5b271beb0c012d17c5576b18ebc35588e9ab

    • SHA512

      68eb9f0b61477978a583b8b5a8b2f3dbd51f7e5c23f6d96a4aec218c64ef5efa6db7be7fd3b7010fcf20607a1ca51cb6689b4e66b1f85e34bfdbedc0739d214d

    • SSDEEP

      12288:nctEagGmcl4gBF1BRnI6hAVebOe1AFdMpUrMZ9uEIZc0b:aR+cl7X1BRnI6hmebOe1AbHWuEIZcW

    Score
    7/10
    bootkitpersistence

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks