Analysis
- max time kernel
150s - max time network
145s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
28/07/2026, 04:31
General
- Target 2026-07-28_b3a63da97db6644ead38d97ec06904fa_mespinoza.exe
- Size 21.7MB
- Sample260728-e5qb7syvhy
- SHA256 f69b2dd77921adc1caa239df798436b809e1de7b1c4ffc8dcf9f495c67117587
Score
7/10
Malware Config
Signatures
- Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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 2 IoCs
- Drops file in Program Files directory 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 2 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-28_b3a63da97db6644ead38d97ec06904fa_mespinoza.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-28_b3a63da97db6644ead38d97ec06904fa_mespinoza.exe"1⤵
- Checks BIOS information in registry
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/4212-0-0x00007FF6BADE4000-0x00007FF6BAFAA000-memory.dmp
memory/4212-1-0x00007FFAA7F70000-0x00007FFAA7F72000-memory.dmp
memory/4212-3-0x00007FF6BA9F0000-0x00007FF6BB55C000-memory.dmp
memory/4212-7-0x00007FF6BADE4000-0x00007FF6BAFAA000-memory.dmp