Overview

overview

8

Static

static

a1181f21c1...33.exe

windows7-x64

8

a1181f21c1...33.exe

windows10-2004-x64

8

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General

  • Target

    a1181f21c10cb6ac78d332069b0d432d4e1e4836517f98e2e27019099f465a33

  • Size

    304KB

  • Sample

    221206-r33kzaba8w

  • MD5

    2475b544533f092f584197818cdc4757

  • SHA1

    7fa307e023d07aa1d89d0d117a1df5e35df66723

  • SHA256

    a1181f21c10cb6ac78d332069b0d432d4e1e4836517f98e2e27019099f465a33

  • SHA512

    5080c1e3543221b68a0b51a36586ebbf2c049704a2ec56890bfc10a47f91b1e4231a52c7d9e0c09b4e67cf5e19523df91791958b88b2989c296a3a31ce70444b

  • SSDEEP

    6144:57Bu5qMPR19lVvYZ0FEJOb0Irgr0aGJJMswHSCymoYYY:ZBufPR16vrdG7cyt

Score
8/10
bootkitpersistence

Malware Config

Targets

    • Target

      a1181f21c10cb6ac78d332069b0d432d4e1e4836517f98e2e27019099f465a33

    • Size

      304KB

    • MD5

      2475b544533f092f584197818cdc4757

    • SHA1

      7fa307e023d07aa1d89d0d117a1df5e35df66723

    • SHA256

      a1181f21c10cb6ac78d332069b0d432d4e1e4836517f98e2e27019099f465a33

    • SHA512

      5080c1e3543221b68a0b51a36586ebbf2c049704a2ec56890bfc10a47f91b1e4231a52c7d9e0c09b4e67cf5e19523df91791958b88b2989c296a3a31ce70444b

    • SSDEEP

      6144:57Bu5qMPR19lVvYZ0FEJOb0Irgr0aGJJMswHSCymoYYY:ZBufPR16vrdG7cyt

    Score
    8/10
    bootkitpersistence

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

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

      bootkitpersistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks