Analysis

  • max time kernel
    298s
  • max time network
    170s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-it
  • resource tags

    arch:x64arch:x86image:win11-20260513-itlocale:it-itos:windows11-21h2-x64systemwindows
  • submitted
    22/06/2026, 16:41

General

  • Target
    Samsung HARD Downloader/AgentModule.dll
  • Size 2.0MB
  • Sample260622-t7kxtset7k
  • SHA256 d46f87b767dc82bf9a180bb2a981058909ff65cf0de6edfbc917cbac0f719f67
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

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

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Samsung HARD Downloader\AgentModule.dll",#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1848
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Samsung HARD Downloader\AgentModule.dll",#1
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1816

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        memory/1816-0-0x0000000074CB0000-0x000000007512D000-memory.dmp

        memory/1816-1-0x0000000074BA0000-0x0000000074BD9000-memory.dmp

        memory/1816-2-0x0000000073F50000-0x00000000743A3000-memory.dmp

        memory/1816-3-0x0000000077746000-0x0000000077748000-memory.dmp

        memory/1816-4-0x0000000002A20000-0x0000000002A21000-memory.dmp

        memory/1816-6-0x0000000002B80000-0x0000000002B81000-memory.dmp

        memory/1816-5-0x0000000002B70000-0x0000000002B71000-memory.dmp