Resubmissions

19-11-2024 17:09

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19-11-2024 03:18

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19-11-2024 03:11

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19-11-2024 03:07

241119-dmstyazgnj 10

Analysis

  • max time kernel
    53s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-es
  • resource tags

    arch:x64arch:x86image:win11-20241007-eslocale:es-esos:windows11-21h2-x64systemwindows
  • submitted
    19-11-2024 17:09

Errors

Reason
Machine shutdown

General

  • Target

    Recovery.exe

  • Size

    107KB

  • MD5

    d90957d3cd23fbe36dedf1de6faa40d7

  • SHA1

    d4eaf5265a509389673f78621f2b8fad4469534b

  • SHA256

    d5acc827ecfc0a6944eb3b7fe4e1de10c433f8bacbf9e5ac576a5fbd55219f36

  • SHA512

    aee281bbeace797741126ccdb5b516bfb265b6630f16ffaf44ad840383e42ea11e5fe9b30518c2de652dfc2dfc8521523f99b8e39d79d28691e6049de843c12f

  • SSDEEP

    3072:gL06G8Hl9Sfhw4mzbW/hg0cYpG1RgN1UeeXB:gL48F9S2NbAhg0cYpG1RgN1Ues

Malware Config

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 2 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 2 IoCs
  • Blocks application from running via registry modification 9 IoCs

    Adds application to list of disallowed applications.

  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Disables use of System Restore points 1 TTPs
  • Possible privilege escalation attempt 6 IoCs
  • Modifies file permissions 1 TTPs 6 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Modifies WinLogon 2 TTPs 2 IoCs
  • 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Control Panel 1 IoCs
  • Modifies Internet Explorer start page 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • System policy modification 1 TTPs 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Recovery.exe
    "C:\Users\Admin\AppData\Local\Temp\Recovery.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • Modifies visibility of file extensions in Explorer
    • Modifies visiblity of hidden/system files in Explorer
    • UAC bypass
    • Blocks application from running via registry modification
    • Disables RegEdit via registry modification
    • Checks whether UAC is enabled
    • Modifies WinLogon
    • Writes to the Master Boot Record (MBR)
    • Modifies Control Panel
    • Modifies Internet Explorer start page
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3912
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32 && icacls C:\Windows\System32 /grant %username%:F && takeown /f C:\Windows\System32\drivers && icacls C:\Windows\System32\drivers /grant %username%:F && Exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3556
      • C:\Windows\system32\takeown.exe
        takeown /f C:\Windows\System32
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:2316
      • C:\Windows\system32\icacls.exe
        icacls C:\Windows\System32 /grant Admin:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:3148
      • C:\Windows\system32\takeown.exe
        takeown /f C:\Windows\System32\drivers
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:3724
      • C:\Windows\system32\icacls.exe
        icacls C:\Windows\System32\drivers /grant Admin:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:4888
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32\winlogon.exe && icacls C:\Windows\System32\winlogon.exe /grant %username%:F exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2676
      • C:\Windows\system32\takeown.exe
        takeown /f C:\Windows\System32\winlogon.exe
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:4252
      • C:\Windows\system32\icacls.exe
        icacls C:\Windows\System32\winlogon.exe /grant Admin:F exit
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:5056

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2676-21-0x00007FFA2E2E0000-0x00007FFA2E658000-memory.dmp

    Filesize

    3.5MB

  • memory/2676-20-0x00007FF602410000-0x00007FF60247C000-memory.dmp

    Filesize

    432KB

  • memory/3912-10-0x00007FFA0ED80000-0x00007FFA0F842000-memory.dmp

    Filesize

    10.8MB

  • memory/3912-14-0x00007FFA2D6C0000-0x00007FFA2D73F000-memory.dmp

    Filesize

    508KB

  • memory/3912-4-0x00007FFA0ED80000-0x00007FFA0F842000-memory.dmp

    Filesize

    10.8MB

  • memory/3912-5-0x00007FFA0ED83000-0x00007FFA0ED85000-memory.dmp

    Filesize

    8KB

  • memory/3912-6-0x00007FFA2A800000-0x00007FFA2A891000-memory.dmp

    Filesize

    580KB

  • memory/3912-8-0x00007FFA1C7E0000-0x00007FFA1C7FD000-memory.dmp

    Filesize

    116KB

  • memory/3912-9-0x00007FFA19380000-0x00007FFA1942C000-memory.dmp

    Filesize

    688KB

  • memory/3912-7-0x00007FFA2E070000-0x00007FFA2E11E000-memory.dmp

    Filesize

    696KB

  • memory/3912-0-0x00007FFA0ED83000-0x00007FFA0ED85000-memory.dmp

    Filesize

    8KB

  • memory/3912-3-0x000000001C6B0000-0x000000001C7B2000-memory.dmp

    Filesize

    1.0MB

  • memory/3912-13-0x00007FFA2E2E0000-0x00007FFA2E658000-memory.dmp

    Filesize

    3.5MB

  • memory/3912-2-0x0000000002C70000-0x0000000002C76000-memory.dmp

    Filesize

    24KB

  • memory/3912-1-0x0000000000B70000-0x0000000000B92000-memory.dmp

    Filesize

    136KB

  • memory/3912-19-0x00007FFA26530000-0x00007FFA26595000-memory.dmp

    Filesize

    404KB

  • memory/3912-17-0x00007FFA2CD90000-0x00007FFA2CDDC000-memory.dmp

    Filesize

    304KB

  • memory/3912-16-0x00007FFA2E6D0000-0x00007FFA2E77F000-memory.dmp

    Filesize

    700KB

  • memory/3912-24-0x00007FFA2E2E0000-0x00007FFA2E658000-memory.dmp

    Filesize

    3.5MB

  • memory/3912-40-0x00007FFA17870000-0x00007FFA17896000-memory.dmp

    Filesize

    152KB

  • memory/3912-47-0x00007FFA2DFA0000-0x00007FFA2DFC9000-memory.dmp

    Filesize

    164KB

  • memory/3912-48-0x00007FFA2D1B0000-0x00007FFA2D2C2000-memory.dmp

    Filesize

    1.1MB