Analysis
- user interaction
yes - max time kernel
58s - max time network
38s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
23/06/2026, 11:41
General
- Target ObsidianLoader.exe
- Size 339KB
- Sample260623-ntvbfsct2k
- SHA256 f13810446d0a05b3a98d134f6d41cb3d5dd0e010949482199f655e931ee40d73
Score
9/10
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Downloads MZ/PE file 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Executes dropped EXE 1 IoCs
- Themida packer 6 IoCs
Detects Themida, an advanced Windows software protection system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\ObsidianLoader.exe"C:\Users\Admin\AppData\Local\Temp\ObsidianLoader.exe"1⤵
- Downloads MZ/PE file
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ObsidianLoader\1cd7ee68\ObsidianLoader.core.tmd.exe"C:\Users\Admin\AppData\Local\Temp\ObsidianLoader\1cd7ee68\ObsidianLoader.core.tmd.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c cls3⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
ObsidianLoader.core.tmd.exe
memory/3764-3-0x0000000140000000-0x0000000140B38000-memory.dmp
memory/3764-6-0x0000000140000000-0x0000000140B38000-memory.dmp
memory/3764-5-0x0000000140000000-0x0000000140B38000-memory.dmp
memory/3764-7-0x0000000140000000-0x0000000140B38000-memory.dmp
memory/3764-8-0x0000000140000000-0x0000000140B38000-memory.dmp