Overview

overview

7

Static

static

MEMZ-master/MEMZ.exe

windows7_x64

6

MEMZ-master/MEMZ.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    18s
  • max time network
    15s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 04:52

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    MEMZ-master/MEMZ.exe

  • Size

    16KB

  • MD5

    1d5ad9c8d3fee874d0feb8bfac220a11

  • SHA1

    ca6d3f7e6c784155f664a9179ca64e4034df9595

  • SHA256

    3872c12d31fc9825e8661ac01ecee2572460677afbc7093f920a8436a42e28ff

  • SHA512

    c8246f4137416be33b6d1ac89f2428b7c44d9376ac8489a9fbf65ef128a6c53fb50479e1e400c8e201c8611992ab1d6c1bd3d6cece89013edb4d35cdd22305b1

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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 25 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe
    "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1640
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:4592
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:4496
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:2316
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1156
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:5068
    • C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /main
      2⤵
      • Checks computer location settings
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of WriteProcessMemory
      PID:1164
      • C:\Windows\SysWOW64\notepad.exe
        "C:\Windows\System32\notepad.exe" \note.txt
        3⤵
          PID:1172

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Bootkit

    1
    T1067

    Privilege Escalation

    Defense Evasion

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1156-133-0x0000000000000000-mapping.dmp
      Download
    • memory/1164-135-0x0000000000000000-mapping.dmp
      Download
    • memory/1172-136-0x0000000000000000-mapping.dmp
      Download
    • memory/2316-132-0x0000000000000000-mapping.dmp
      Download
    • memory/4496-131-0x0000000000000000-mapping.dmp
      Download
    • memory/4592-130-0x0000000000000000-mapping.dmp
      Download
    • memory/5068-134-0x0000000000000000-mapping.dmp
      Download