Analysis

  • max time kernel
    140s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/10/2024, 01:38

General

  • Target
    Pago factura_7273390_2024_I_53430000.exe
  • Size 715KB
  • Sample241017-b2dmfsvfrb
  • SHA256 ea5a8634885c44fcda935373a2d418ef8c32fedd810962b5d703f168ef69ed0b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Pago factura_7273390_2024_I_53430000.exe
    "C:\Users\Admin\AppData\Local\Temp\Pago factura_7273390_2024_I_53430000.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:908
    • C:\Users\Admin\AppData\Local\Temp\Pago factura_7273390_2024_I_53430000.exe
      "C:\Users\Admin\AppData\Local\Temp\Pago factura_7273390_2024_I_53430000.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3084

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nslA104.tmp\System.dll
        • Size 12KB
        • SHA256 7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1
        • MD5 SHA1 SHA512 SSDEEP

        memory/908-14-0x0000000003050000-0x0000000004232000-memory.dmp

        memory/908-15-0x0000000077C41000-0x0000000077D61000-memory.dmp

        memory/908-16-0x00000000750E5000-0x00000000750E6000-memory.dmp

        memory/908-18-0x0000000003050000-0x0000000004232000-memory.dmp

        memory/3084-17-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/3084-19-0x0000000001660000-0x0000000002842000-memory.dmp

        memory/3084-20-0x0000000077CC8000-0x0000000077CC9000-memory.dmp

        memory/3084-21-0x0000000077CE5000-0x0000000077CE6000-memory.dmp

        memory/3084-34-0x0000000001660000-0x0000000002842000-memory.dmp

        memory/3084-35-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/3084-36-0x0000000000401000-0x0000000000404000-memory.dmp

        memory/3084-37-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/3084-38-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/3084-39-0x0000000077C41000-0x0000000077D61000-memory.dmp

        memory/3084-40-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/3084-41-0x0000000000401000-0x0000000000404000-memory.dmp

        memory/3084-42-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/3084-46-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/3084-48-0x0000000000401000-0x0000000000404000-memory.dmp

        memory/3084-47-0x0000000001660000-0x0000000002842000-memory.dmp