Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
10/08/2026, 15:46
General
- Target 4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd.exe
- Size 764KB
- Sample260810-s73bfascra
- SHA256 4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd
Malware Config
Signatures
- Family: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 4 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd.exe"C:\Users\Admin\AppData\Local\Temp\4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd.exe"C:\Users\Admin\AppData\Local\Temp\4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd.exe"C:\Users\Admin\AppData\Local\Temp\4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd.exe"2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd.exe"C:\Users\Admin\AppData\Local\Temp\4d1b8646c493d3fed46745143f84d655331efb35a908297c86efcdc90fe7cecd.exe"3⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
System.dll
memory/1384-20-0x0000000003360000-0x00000000045E0000-memory.dmp
memory/1384-21-0x0000000074A15000-0x0000000074A16000-memory.dmp
memory/1384-22-0x0000000003360000-0x00000000045E0000-memory.dmp
memory/3344-23-0x0000000077D18000-0x0000000077D19000-memory.dmp
memory/3344-24-0x0000000077DB9000-0x0000000077DBA000-memory.dmp
memory/3344-25-0x0000000077D35000-0x0000000077D36000-memory.dmp
memory/3344-29-0x00000000016D0000-0x0000000002950000-memory.dmp
memory/3344-30-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/3344-31-0x0000000077DB9000-0x0000000077DBA000-memory.dmp