Overview

overview

7

Static

static

1

MEMZ.exe

windows7-x64

6

MEMZ.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    89s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    05-04-2023 17:40

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General

  • Target

    MEMZ.exe

  • Size

    16KB

  • MD5

    1d5ad9c8d3fee874d0feb8bfac220a11

  • SHA1

    ca6d3f7e6c784155f664a9179ca64e4034df9595

  • SHA256

    3872c12d31fc9825e8661ac01ecee2572460677afbc7093f920a8436a42e28ff

  • SHA512

    c8246f4137416be33b6d1ac89f2428b7c44d9376ac8489a9fbf65ef128a6c53fb50479e1e400c8e201c8611992ab1d6c1bd3d6cece89013edb4d35cdd22305b1

  • SSDEEP

    192:M2WgyvSW8gRc6olcIEiwqZKBkDFR43xWTM3LHf26gFrcx3sNq:JWgnSmFlcIqq3agmLH+6gF23sN

Score
6/10
bootkitpersistence

Malware Config

Signatures

  • 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 WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
    "C:\Users\Admin\AppData\Local\Temp\MEMZ.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1384
    • C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1128
    • C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:708
    • C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:568
    • C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:592
    • C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:528
    • C:\Users\Admin\AppData\Local\Temp\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ.exe" /main
      2⤵
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of WriteProcessMemory
      PID:1484
      • C:\Windows\SysWOW64\notepad.exe
        "C:\Windows\System32\notepad.exe" \note.txt
        3⤵
          PID:1864
        • C:\Windows\SysWOW64\notepad.exe
          "C:\Windows\System32\notepad.exe"
          3⤵
            PID:880

      Network

      MITRE ATT&CK Enterprise v6

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      Downloads

      • C:\note.txt
        Filesize

        218B

        MD5

        afa6955439b8d516721231029fb9ca1b

        SHA1

        087a043cc123c0c0df2ffadcf8e71e3ac86bbae9

        SHA256

        8e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270

        SHA512

        5da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf

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