Overview

overview

7

Static

static

1

MEMZ 3.0/MEMZ.bat

windows10-1703-x64

7

MEMZ 3.0/MEMZ.bat

windows10-2004-x64

7

MEMZ 3.0/MEMZ.exe

windows10-1703-x64

7

MEMZ 3.0/MEMZ.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    80s
  • max time network
    83s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    31-03-2023 16:18

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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
7/10
bootkitpersistence

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 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
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Runs regedit.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 24 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:4244
    • 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:3548
    • 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:2056
    • 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:2068
    • 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:4448
    • 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:3868
    • C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe
      "C:\Users\Admin\AppData\Local\Temp\MEMZ 3.0\MEMZ.exe" /main
      2⤵
      • Checks computer location settings
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4068
      • C:\Windows\SysWOW64\notepad.exe
        "C:\Windows\System32\notepad.exe" \note.txt
        3⤵
          PID:4072
        • C:\Windows\SysWOW64\regedit.exe
          "C:\Windows\System32\regedit.exe"
          3⤵
          • Runs regedit.exe
          PID:4472
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
      1⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4740
    • C:\Windows\system32\browser_broker.exe
      C:\Windows\system32\browser_broker.exe -Embedding
      1⤵
      • Modifies Internet Explorer settings
      PID:4544
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4648
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
      1⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      PID:4972

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Bootkit

    1
    T1067

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    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

      Download Submit
    • memory/4740-121-0x00000281E5C20000-0x00000281E5C30000-memory.dmp
      Filesize

      64KB

      Download
    • memory/4740-137-0x00000281E6440000-0x00000281E6450000-memory.dmp
      Filesize

      64KB

      Download
    • memory/4740-158-0x00000281E6000000-0x00000281E6001000-memory.dmp
      Filesize

      4KB

      Download
    • memory/4740-160-0x00000281E6240000-0x00000281E6242000-memory.dmp
      Filesize

      8KB

      Download
    • memory/4740-162-0x00000281EA6F0000-0x00000281EA6F2000-memory.dmp
      Filesize

      8KB

      Download
    • memory/4740-163-0x00000281EA720000-0x00000281EA722000-memory.dmp
      Filesize

      8KB

      Download