Overview

overview

7

Static

static

1

MEMZ-maste...ve.exe

windows7-x64

6

MEMZ-maste...ve.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    39s
  • max time network
    81s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-03-2023 21:00

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General

  • Target

    MEMZ-master/MEMZ-Destructive.exe

  • Size

    14KB

  • MD5

    19dbec50735b5f2a72d4199c4e184960

  • SHA1

    6fed7732f7cb6f59743795b2ab154a3676f4c822

  • SHA256

    a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

  • SHA512

    aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

  • SSDEEP

    192:sIvxdXSQeWSg9JJS/lcIEiwqZKBkDFR43xWTM3LHn8f26gyr6yfFCj3r:sMVSaSEglcIqq3agmLc+6gyWqFCj

Score
7/10
bootkitpersistence

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

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

    bootkitpersistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of SendNotifyMessage 27 IoCs
  • Suspicious use of SetWindowsHookEx 64 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe
    "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3428
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2068
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4600
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2312
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4884
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1540
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ-Destructive.exe" /main
      2⤵
      • Checks computer location settings
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5080
      • C:\Windows\SysWOW64\notepad.exe
        "C:\Windows\System32\notepad.exe" \note.txt
        3⤵
          PID:5092
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1696

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Bootkit

    1
    T1067

    Privilege Escalation

    Defense Evasion

    Credential Access

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    3
    T1082

    Peripheral Device Discovery

    1
    T1120

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\note.txt
      Filesize

      218B

      MD5

      afa6955439b8d516721231029fb9ca1b

      SHA1

      087a043cc123c0c0df2ffadcf8e71e3ac86bbae9

      SHA256

      8e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270

      SHA512

      5da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf

      Download Submit
    • memory/1696-136-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1696-135-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1696-137-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1696-141-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1696-142-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1696-143-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1696-144-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1696-145-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1696-146-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1696-147-0x0000027BE2140000-0x0000027BE2141000-memory.dmp
      Filesize

      4KB

      Download