Overview

overview

7

Static

static

1

MBR-CipherMasonry.rar

windows10-2004-x64

7

MBR-CipherMasonry.rar

windows10-ltsc_2021-x64

1

MBR-CipherMasonry.rar

windows11-21h2-x64

1

Sharing

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General

  • Target
    MBR-CipherMasonry.rar
  • Size 89KB
  • Sample260429-gp615acw4n
  • SHA256 e8ff4c03a5031ee6885cba50f08f9a317b64476a2bcec79b33eac9cbe4451d91
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
bootkitdiscoverypersistence

Malware Config

Targets

    • Target
      MBR-CipherMasonry.rar
    • Size 89KB
    • SHA256 e8ff4c03a5031ee6885cba50f08f9a317b64476a2bcec79b33eac9cbe4451d91
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    7/10
    bootkitdiscoverypersistence

    • Checks computer location settings

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

    • Executes dropped EXE

    • Writes to the Master Boot Record (MBR)

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

      bootkitpersistence
    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v16

Tasks