Analysis
- user interaction
yes - max time kernel
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
24/07/2026, 22:10
General
- Target Holmium.exe
- Size 126KB
- Sample260724-13nw9agk21
- SHA256 763b04a88559fd1ef98c45c528ea034a646f5a3109512d88ae86b2eae8b10388
Score
8/10
Malware Config
Signatures
- Disables Task Manager via registry modification
- 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.
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- 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.
- Modifies registry key 1 TTPs 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Holmium.exe"C:\Users\Admin\AppData\Local\Temp\Holmium.exe"1⤵
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c REG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\reg.exeREG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f3⤵
- System Location Discovery: System Language Discovery
- Modifies registry key
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x0000000000000500 0x000000000000050C1⤵
- Suspicious use of AdjustPrivilegeToken