Analysis

  • max time kernel
    300s
  • max time network
    301s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    22/11/2024, 03:36

General

  • Target
    msiexec.exe
  • Size 401KB
  • Sample241122-d54ddstney
  • SHA256 f5096a51fdc054c4a217966b22f827a921d50a12436aa995d6f4180bdc4ba420
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 3 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Deletes itself 1 IoCs
  • Drops startup file 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies Control Panel 4 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\msiexec.exe
    "C:\Users\Admin\AppData\Local\Temp\msiexec.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2384
    • C:\Users\Admin\AppData\Local\Temp\msiexec.exe
      "C:\Users\Admin\AppData\Local\Temp\msiexec.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Looks for VirtualBox Guest Additions in registry
      • Adds policy Run key to start application
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Drops startup file
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies Control Panel
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2524
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\fc.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\fc.exe"
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Adds policy Run key to start application
        • Executes dropped EXE
        • Adds Run key to start application
        • Modifies Control Panel
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2852
      • C:\Users\Admin\AppData\Local\Temp\tmpC774.exe
        "C:\Users\Admin\AppData\Local\Temp\tmpC774.exe" "C:\Users\Admin\AppData\Local\Temp\msiexec.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2840
        • C:\Users\Admin\AppData\Local\Temp\tmpC774.exe
          "C:\Users\Admin\AppData\Local\Temp\tmpC774.exe" "C:\Users\Admin\AppData\Local\Temp\msiexec.exe"
          4⤵
          • Deletes itself
          • Executes dropped EXE
          PID:2944
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c ping 127.0.0.1 >> nul
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:3004
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\fc.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\fc.exe"
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          PID:2612
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:1236

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        3vN4X2GqtJIBGEih5.dat

        • Path C:\$Recycle.bin\S-1-5-21-3551809350-4263495960-1443967649-1000\$ast-S-1-5-21-3551809350-4263495960-1443967649-1000\3vN4X2GqtJIBGEih5.dat
        • Size 21KB
        • SHA256 375d96a5aad89a6b227d11e32a5e3ab5d4dc2fe074e0450e848cfade727de988
        • MD5 SHA1 SHA512 SSDEEP

        btYKkhgqI5MszUei4DdaxW.dat

        • Path C:\$Recycle.bin\S-1-5-21-3551809350-4263495960-1443967649-1000\$ast-S-1-5-21-3551809350-4263495960-1443967649-1000\btYKkhgqI5MszUei4DdaxW.dat
        • Size 130KB
        • SHA256 16c4f394fd81c8c0c49b4439761025789c4952258bd008edafd28d77ad509b0b
        • MD5 SHA1 SHA512 SSDEEP

        u_3atZOzGOEeyEQ9VXPZid9oj6Str.dat

        • Path C:\$Recycle.bin\S-1-5-21-3551809350-4263495960-1443967649-1000\$ast-S-1-5-21-3551809350-4263495960-1443967649-1000\u_3atZOzGOEeyEQ9VXPZid9oj6Str.dat
        • Size 5KB
        • SHA256 2feadf29bbd4be9610c8f3e0aab265a8eab77f91abea523055fb8f8e1e2978ef
        • MD5 SHA1 SHA512 SSDEEP

        tmpC774.exe

        • Path C:\Users\Admin\AppData\Local\Temp\tmpC774.exe
        • Size 401KB
        • SHA256 f5096a51fdc054c4a217966b22f827a921d50a12436aa995d6f4180bdc4ba420
        • MD5 SHA1 SHA512 SSDEEP

        fc.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\StartUp\fc.lnk
        • Size 1KB
        • SHA256 919c76b098ef85461544447edec75eff8e856929f03ef43f5b4c3c4fa7886562
        • MD5 SHA1 SHA512

        fc.exe

        • Path \Users\Admin\AppData\Roaming\Microsoft\Windows\IEUpdate\fc.exe
        • Size 130KB
        • SHA256 c55c23f45448d73e5095f5678bd45a7993154b8818d5b29a2e02119c7612f3ba
        • MD5 SHA1 SHA512 SSDEEP

        memory/2384-0-0x0000000000250000-0x0000000000286000-memory.dmp

        memory/2524-1-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2524-7-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2524-17-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2524-3-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2524-15-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2524-13-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2524-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        memory/2524-33-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2524-5-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2524-9-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2840-66-0x0000000000400000-0x0000000000469000-memory.dmp

        memory/2840-81-0x0000000000400000-0x0000000000469000-memory.dmp

        memory/2852-58-0x0000000000100000-0x0000000000101000-memory.dmp

        memory/2852-65-0x0000000000920000-0x000000000092B000-memory.dmp

        memory/2852-64-0x0000000000920000-0x000000000092B000-memory.dmp

        memory/2944-82-0x0000000000400000-0x0000000000439000-memory.dmp

        memory/2944-78-0x000000007EFDE000-0x000000007EFDF000-memory.dmp