Overview

overview

7

Static

static

1

MEMZ 3.0/MEMZ.exe

windows7-x64

6

MEMZ 3.0/MEMZ.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    175s
  • max time network
    29s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    31-03-2023 15:06

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General

  • Target

    MEMZ 3.0/MEMZ.exe

  • Size

    12KB

  • MD5

    a7bcf7ea8e9f3f36ebfb85b823e39d91

  • SHA1

    761168201520c199dba68add3a607922d8d4a86e

  • SHA256

    3ff64f10603f0330fa2386ff99471ca789391ace969bd0ec1c1b8ce1b4a6db42

  • SHA512

    89923b669d31e590189fd06619bf27e47c5a47e82be6ae71fdb1b9b3b30b06fb7ca8ffed6d5c41ac410a367f2eb07589291e95a2644877d6bffd52775a5b1523

  • SSDEEP

    192:HMDLTxWDf/pl3cIEiwqZKBktLe3P+qf2jhP6B5b2yL3:H4IDH3cIqqvUWq+jhyT2yL

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 AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe
    "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1384
    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1544
    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1144
    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1364
    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:852
    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe" /watchdog
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:268
    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe" /main
      2⤵
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of WriteProcessMemory
      PID:1756
      • C:\Windows\SysWOW64\notepad.exe
        "C:\Windows\System32\notepad.exe" \note.txt
        3⤵
          PID:472
        • C:\Windows\SysWOW64\notepad.exe
          "C:\Windows\System32\notepad.exe"
          3⤵
            PID:572
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x2f0
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:780

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Persistence

      Bootkit

      1
      T1067

      Privilege Escalation

      Defense Evasion

      Credential Access

      Discovery

      System Information Discovery

      1
      T1082

      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

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