Analysis
- max time kernel
148s - max time network
136s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
23/09/2026, 22:30
General
- Target attachment20260923-764-yacyst.xlsx
- Size 114KB
- Sample260923-2er5faeg85
- SHA256 4fc50abe4214a380c881eb7b71ec71d2ee63a4ce87138e008dbe800a298df280
Malware Config
Signatures
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious use of SetWindowsHookEx 15 IoCs
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\attachment20260923-764-yacyst.xlsx"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
b8ab77100df80ab2.customDestinations-ms
memory/2880-13-0x00007FF8E8000000-0x00007FF8E8010000-memory.dmp
memory/2880-10-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp
memory/2880-1-0x00007FF8EA3A0000-0x00007FF8EA3B0000-memory.dmp
memory/2880-4-0x00007FF8EA3A0000-0x00007FF8EA3B0000-memory.dmp
memory/2880-7-0x00007FF8EA3A0000-0x00007FF8EA3B0000-memory.dmp
memory/2880-9-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp
memory/2880-8-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp
memory/2880-11-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp
memory/2880-12-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp
memory/2880-6-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp
memory/2880-2-0x00007FF8EA3A0000-0x00007FF8EA3B0000-memory.dmp
memory/2880-14-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp
memory/2880-0-0x00007FF8EA3A0000-0x00007FF8EA3B0000-memory.dmp
memory/2880-15-0x00007FF8E8000000-0x00007FF8E8010000-memory.dmp
memory/2880-5-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp
memory/2880-16-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp
memory/2880-3-0x00007FF92A3BF000-0x00007FF92A3C0000-memory.dmp
memory/2880-50-0x00007FF8EA3A0000-0x00007FF8EA3B0000-memory.dmp
memory/2880-51-0x00007FF8EA3A0000-0x00007FF8EA3B0000-memory.dmp
memory/2880-52-0x00007FF8EA3A0000-0x00007FF8EA3B0000-memory.dmp
memory/2880-53-0x00007FF8EA3A0000-0x00007FF8EA3B0000-memory.dmp
memory/2880-54-0x00007FF92A260000-0x00007FF92A4C3000-memory.dmp