Overview

overview

10

Static

static

10

58bfb9fa88...1f.exe

windows7-x64

58bfb9fa88...1f.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    6s
  • max time network
    12s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    04-02-2024 14:39

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Errors

Reason
Machine shutdown
Report Analysis Logs

General

  • Target

    58bfb9fa8889550d13f42473956dc2a7ec4f3abb18fd3faeaa38089d513c171f.exe

  • Size

    82KB

  • MD5

    e01e11dca5e8b08fc8231b1cb6e2048c

  • SHA1

    4983d07f004436caa3f10b38adacbba6a4ede01a

  • SHA256

    58bfb9fa8889550d13f42473956dc2a7ec4f3abb18fd3faeaa38089d513c171f

  • SHA512

    298bfb9fe55ddd80f1c6671622d7e9e865899a855b5bb8e0d85d8520160cedca6fd8bc72c9881925477bcab883bf6e6f4c69f997b774b74fe992e023a81269de

  • SSDEEP

    1536:PcW4lAJGGnzjoih/NDh/NDuk+XkGAK/hztXcag+PlbBfkWIyvZrw281r5XsmCZEe:UWNGszjoih/NDh/NDuk+XkGAK/hztXcQ

Score
10/10
evasionpersistenceransomwaretrojan

Malware Config

Signatures

  • Contains code to disable Windows Defender 2 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Detects executables containing artifacts associated with disabling Widnows Defender 2 IoCs
  • Detects executables embedding registry key / value combination indicative of disabling Windows Defender features 2 IoCs
  • Detects executables referencing many base64-encoded IR and analysis tools names 2 IoCs
  • Modifies boot configuration data using bcdedit 1 TTPs 1 IoCs
    ransomwareevasion
  • Windows security modification 2 TTPs 1 IoCs
    evasiontrojan
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\58bfb9fa8889550d13f42473956dc2a7ec4f3abb18fd3faeaa38089d513c171f.exe
    "C:\Users\Admin\AppData\Local\Temp\58bfb9fa8889550d13f42473956dc2a7ec4f3abb18fd3faeaa38089d513c171f.exe"
    1⤵
    • Windows security modification
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2052
    • C:\Windows\system32\reg.exe
      "reg.exe" delete HKLM\System\CurrentControlSet\Control\SafeBoot\Minimal\WinDefend /f
      2⤵
      • Modifies registry key
      PID:1872
    • C:\Windows\system32\bcdedit.exe
      "bcdedit.exe" /set {default} safeboot network
      2⤵
      • Modifies boot configuration data using bcdedit
      PID:1672
    • C:\Windows\system32\reg.exe
      "reg.exe" add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Userinit /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\58bfb9fa8889550d13f42473956dc2a7ec4f3abb18fd3faeaa38089d513c171f.exe","C:\Windows\system32\userinit.exe" /f
      2⤵
      • Modifies WinLogon for persistence
      PID:2004
    • C:\Windows\system32\net.exe
      "net.exe" user Admin ""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1904
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 user Admin ""
        3⤵
          PID:2844
      • C:\Windows\system32\shutdown.exe
        "shutdown.exe" /r /t 0
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2280
    • C:\Windows\system32\LogonUI.exe
      "LogonUI.exe" /flags:0x0
      1⤵
        PID:2732
      • C:\Windows\system32\LogonUI.exe
        "LogonUI.exe" /flags:0x1
        1⤵
          PID:2568

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • memory/2052-0-0x0000000000D90000-0x0000000000DAA000-memory.dmp

          Filesize

          104KB

          Download

        • memory/2052-1-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

          Filesize

          9.9MB

          Download

        • memory/2052-2-0x000000001A810000-0x000000001A890000-memory.dmp

          Filesize

          512KB

          Download

        • memory/2052-4-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

          Filesize

          9.9MB

          Download

        • memory/2568-5-0x0000000002820000-0x0000000002821000-memory.dmp

          Filesize

          4KB

          Download

        • memory/2732-3-0x0000000002B80000-0x0000000002B81000-memory.dmp

          Filesize

          4KB

          Download