Analysis

  • max time kernel
    16s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/06/2024, 16:40

General

  • Target

    trichloromethane.exe

  • Size

    120KB

  • MD5

    5e8ce90547acca8bd050fccb885558a2

  • SHA1

    a65ca5ddbcabeca7a5b9a243131bf8ce6798e15a

  • SHA256

    2829a026d0c7f6ca2fcba66eeef48606c3307312898fefef8af269dcb2158155

  • SHA512

    ac4aace898b8fa9037590edcce478c649aed9daf4d7fc2285f045aecf0f86d25a69903b1458b96964f6f7e9d4fb8f79ce923896b5ff84008f9f32bf86ff11d8f

  • SSDEEP

    3072:87Vs+B4vSgLkgjIldksHYfYjbyKK03T9zqKyM:24vSuKXHtl

Malware Config

Signatures

  • Disables Task Manager via registry modification
  • 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 registry key 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\trichloromethane.exe
    "C:\Users\Admin\AppData\Local\Temp\trichloromethane.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of WriteProcessMemory
    PID:1800
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c REG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2876
      • C:\Windows\SysWOW64\reg.exe
        REG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f
        3⤵
        • Modifies registry key
        PID:3396
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x40c 0x45c
    1⤵
      PID:3616
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1420 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:2204

      Network

      MITRE ATT&CK Enterprise v15

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      Downloads