Analysis

  • max time kernel
    125s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-06-2024 22:04

General

  • Target

    WTLDR.exe

  • Size

    31KB

  • MD5

    7a94013c17dc892cea16fbae38646e43

  • SHA1

    8cf54c2ac961dd5c82cb3b07c3de317847aa94bb

  • SHA256

    cd35af0a0c71c382760409b7b2343c83857d89af55a0b365b72962f0f9c9a400

  • SHA512

    03df47db51270ca87172620e5475ce7a99e1fa1bd61e1956e4a0b28792d145b4e30d5b0d7b0737ea3ed331cecaecde78641b4828b1b9425153b1f9ac3de6f34a

  • SSDEEP

    768:jrpS7G1XB9Qzxry1vIPvQbxvKnQmIDUu0tinaj:Um6yxIQVk7j

Malware Config

Signatures

  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WTLDR.exe
    "C:\Users\Admin\AppData\Local\Temp\WTLDR.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:228
    • C:\Users\Admin\AppData\Local\Temp\chrome_protect.exe
      "C:\Users\Admin\AppData\Local\Temp\chrome_protect.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3056
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\chrome_protect.exe" "chrome_protect.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:4680
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\chrome_protect.exe"
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:4296
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c ping 0 -n 2 & del "C:\Users\Admin\AppData\Local\Temp\chrome_protect.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4164
        • C:\Windows\SysWOW64\PING.EXE
          ping 0 -n 2
          4⤵
          • Runs ping.exe
          PID:2456
  • 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 --field-trial-handle=4168,i,13640054265074968359,8146127767143474550,262144 --variations-seed-version --mojo-platform-channel-handle=1308 /prefetch:8
    1⤵
      PID:2296

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\chrome_protect.exe

      Filesize

      31KB

      MD5

      7a94013c17dc892cea16fbae38646e43

      SHA1

      8cf54c2ac961dd5c82cb3b07c3de317847aa94bb

      SHA256

      cd35af0a0c71c382760409b7b2343c83857d89af55a0b365b72962f0f9c9a400

      SHA512

      03df47db51270ca87172620e5475ce7a99e1fa1bd61e1956e4a0b28792d145b4e30d5b0d7b0737ea3ed331cecaecde78641b4828b1b9425153b1f9ac3de6f34a

    • memory/228-0-0x0000000074622000-0x0000000074623000-memory.dmp

      Filesize

      4KB

    • memory/228-1-0x0000000074620000-0x0000000074BD1000-memory.dmp

      Filesize

      5.7MB

    • memory/228-2-0x0000000074620000-0x0000000074BD1000-memory.dmp

      Filesize

      5.7MB

    • memory/228-12-0x0000000074620000-0x0000000074BD1000-memory.dmp

      Filesize

      5.7MB

    • memory/3056-13-0x0000000074620000-0x0000000074BD1000-memory.dmp

      Filesize

      5.7MB

    • memory/3056-14-0x0000000074620000-0x0000000074BD1000-memory.dmp

      Filesize

      5.7MB

    • memory/3056-16-0x0000000074620000-0x0000000074BD1000-memory.dmp

      Filesize

      5.7MB

    • memory/3056-17-0x0000000074620000-0x0000000074BD1000-memory.dmp

      Filesize

      5.7MB

    • memory/3056-21-0x0000000074620000-0x0000000074BD1000-memory.dmp

      Filesize

      5.7MB