Analysis

  • max time kernel
    63s
  • max time network
    62s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/04/2025, 02:30

General

  • Target

    Hydrargyrum.exe

  • Size

    3.7MB

  • MD5

    a0a8391a92e6c46ab606fcd57cf4f4a4

  • SHA1

    930e6f27b6007529edff5371a1793b36a05d76ee

  • SHA256

    dd97db57914c2b501d6a0762ff8e1dca8f921aec80887e2d3842b399bea16571

  • SHA512

    80798537a6c7fb585e19f399741230fed26d398bcfa17196b9e2d2de9aae1f8b0c33674113e676de390fff4cceeaea2b04976c82d5ab75f955eb51a44f90bcd7

  • SSDEEP

    98304:mqZyM3zLdY32bVNZKCIHcF1T1S2kG6nl6A:TsAZY32PsFIsXl6

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 4 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 64 IoCs
  • Checks BIOS information in registry 2 TTPs 6 IoCs

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

  • Themida packer 16 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Hydrargyrum.exe
    "C:\Users\Admin\AppData\Local\Temp\Hydrargyrum.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Disables RegEdit via registry modification
    • Event Triggered Execution: Image File Execution Options Injection
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • System policy modification
    PID:1720
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:6044
    • C:\Users\Admin\AppData\Local\Temp\Hydrargyrum.exe
      "C:\Users\Admin\AppData\Local\Temp\Hydrargyrum.exe"
      1⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1424
    • C:\Users\Admin\AppData\Local\Temp\Hydrargyrum.harmless.exe
      "C:\Users\Admin\AppData\Local\Temp\Hydrargyrum.harmless.exe"
      1⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3236
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x464 0x4cc
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4076

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1424-14-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1424-10-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1424-16-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1424-9-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1424-8-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1720-5-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1720-4-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1720-1-0x00000000773D4000-0x00000000773D6000-memory.dmp

      Filesize

      8KB

    • memory/1720-2-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1720-0-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1720-3-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/1720-19-0x0000000000400000-0x0000000000E05000-memory.dmp

      Filesize

      10.0MB

    • memory/3236-12-0x0000000000400000-0x0000000000DF9000-memory.dmp

      Filesize

      10.0MB

    • memory/3236-11-0x0000000000400000-0x0000000000DF9000-memory.dmp

      Filesize

      10.0MB

    • memory/3236-13-0x0000000000400000-0x0000000000DF9000-memory.dmp

      Filesize

      10.0MB

    • memory/3236-17-0x0000000000400000-0x0000000000DF9000-memory.dmp

      Filesize

      10.0MB

    • memory/3236-20-0x0000000000400000-0x0000000000DF9000-memory.dmp

      Filesize

      10.0MB