Analysis

  • max time kernel
    7s
  • max time network
    13s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-03-2024 23:01

Errors

Reason
Machine shutdown

General

  • Target

    Windows/Ransomware/Monster Ransomware (second new version)/tunamor.exe

  • Size

    71KB

  • MD5

    e9fdc21bd273444925a4512166188e5b

  • SHA1

    e398138686eedcd8ef9de5342025f7118e120cdf

  • SHA256

    78972cdde1a038f249b481ea2c4b172cc258aa294440333e9c46dcb3fbed5815

  • SHA512

    64989534f56fcd70f3ff08bb47a331d5624fc1e3b387420a885d6f32a537e05182de8c5890612cde03fdd312ad101955674d7455c84b900bf7eed97b402a2b08

  • SSDEEP

    768:Uv3mq1oJQpwvZlXhVkcDsaoi9P9TJKvaoStYARRQwfwiIySf4BtIl82+hE8x:YmqMQoXhVN4aooJhDCSeyxel82WNx

Score
6/10

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.

  • Modifies data under HKEY_USERS 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Windows\Ransomware\Monster Ransomware (second new version)\tunamor.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows\Ransomware\Monster Ransomware (second new version)\tunamor.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Windows\SysWOW64\shutdown.exe
      shutdown.exe -r -f -t 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3128
    • C:\Windows\SysWOW64\shutdown.exe
      C:\Windows\System32\shutdown.exe -r -f -t 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:532
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x4 /state0:0xa399a055 /state1:0x41c64e6d
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:3324

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1716-0-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB