Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
06/03/2026, 15:00
General
- Target 37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb.exe
- Size 417KB
- Sample260306-sdapbsaz7z
- SHA256 37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb
Malware Config
Signatures
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Drops file in Program Files 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\37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb.exe"C:\Users\Admin\AppData\Local\Temp\37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe"C:\Users\Admin\AppData\Local\Temp\37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb.exe"2⤵
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C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe"C:\Users\Admin\AppData\Local\Temp\37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb.exe"2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe"C:\Users\Admin\AppData\Local\Temp\37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb.exe"3⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
System.dll
nsDialogs.dll
memory/2528-21-0x0000000002350000-0x0000000003658000-memory.dmp
memory/2528-18-0x0000000077758000-0x0000000077759000-memory.dmp
memory/2528-20-0x000000007776B000-0x000000007776C000-memory.dmp
memory/2528-19-0x00000000777EB000-0x00000000777EC000-memory.dmp
memory/2528-23-0x0000000033580000-0x0000000033602000-memory.dmp
memory/2528-22-0x0000000001030000-0x0000000002347000-memory.dmp
memory/2528-24-0x00000000777EB000-0x00000000777EC000-memory.dmp
memory/3212-15-0x00000000744F5000-0x00000000744F6000-memory.dmp
memory/3212-16-0x0000000002290000-0x0000000002312000-memory.dmp
memory/3212-17-0x00000000034C0000-0x00000000047C8000-memory.dmp
memory/3212-14-0x00000000034C0000-0x00000000047C8000-memory.dmp