Analysis
- max time kernel
149s - max time network
16s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
22/05/2026, 16:55
General
- Target 2026-05-22_e8159bba258c9e9b6496d87ff4134958_mespinoza.exe
- Size 4.4MB
- Sample260522-vfb2aads5x
- SHA256 e4d79499baf7691f71a1c7799567c3e78bb862e60b7b21edb2174c26375bcbaa
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
- Modifies system certificate store 2 TTPs 3 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-22_e8159bba258c9e9b6496d87ff4134958_mespinoza.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-22_e8159bba258c9e9b6496d87ff4134958_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
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/1356-0-0x00007FF751635000-0x00007FF75180B000-memory.dmp
memory/1356-1-0x00007FFF87A70000-0x00007FFF87A72000-memory.dmp
memory/1356-3-0x00007FF751240000-0x00007FF751DCA000-memory.dmp
memory/1356-6-0x00007FF751240000-0x00007FF751DCA000-memory.dmp
memory/1356-7-0x00007FF751635000-0x00007FF75180B000-memory.dmp
memory/1356-8-0x00007FF751240000-0x00007FF751DCA000-memory.dmp
memory/1356-11-0x00007FF751240000-0x00007FF751DCA000-memory.dmp
memory/1356-12-0x00007FF751635000-0x00007FF75180B000-memory.dmp