Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
16/05/2024, 12:30
General
- Target F24-005880.exe
- Size 791KB
- Sample240516-ppk3nace61
- SHA256 086da7bd75ae9d4bc710b5b00b0ec4f53b2d66d3cb623989c22ab603d6da2b31
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Drops file in System32 directory 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 5 IoCs
- Drops file in Program Files directory 1 IoCs
- Drops file in Windows directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 48 IoCs
- Suspicious behavior: MapViewOfSection 8 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\F24-005880.exe"C:\Users\Admin\AppData\Local\Temp\F24-005880.exe"2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\F24-005880.exe"C:\Users\Admin\AppData\Local\Temp\F24-005880.exe"3⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Windows\SysWOW64\runas.exe"C:\Windows\SysWOW64\runas.exe"2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/1384-40-0x00000000776E1000-0x0000000077801000-memory.dmp
memory/1384-43-0x0000000000401000-0x0000000000404000-memory.dmp
memory/1384-52-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-16-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-17-0x0000000001660000-0x0000000002090000-memory.dmp
memory/1384-53-0x0000000000401000-0x0000000000404000-memory.dmp
memory/1384-19-0x0000000077768000-0x0000000077769000-memory.dmp
memory/1384-20-0x0000000077785000-0x0000000077786000-memory.dmp
memory/1384-41-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-36-0x0000000000401000-0x0000000000404000-memory.dmp
memory/1384-35-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-50-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-37-0x0000000001660000-0x0000000002090000-memory.dmp
memory/1384-38-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-47-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-39-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-33-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-46-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1384-42-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3092-54-0x0000000000680000-0x00000000006BF000-memory.dmp
memory/3092-56-0x0000000000680000-0x00000000006BF000-memory.dmp
memory/3092-49-0x0000000000680000-0x00000000006BF000-memory.dmp
memory/3092-51-0x0000000000680000-0x00000000006BF000-memory.dmp
memory/3096-64-0x000001C0017D0000-0x000001C0018EC000-memory.dmp
memory/3476-57-0x0000000008F70000-0x0000000009077000-memory.dmp
memory/3476-55-0x0000000009300000-0x000000000967B000-memory.dmp
memory/3476-48-0x0000000009300000-0x000000000967B000-memory.dmp
memory/5068-34-0x0000000005370000-0x0000000005DA0000-memory.dmp
memory/5068-13-0x0000000005370000-0x0000000005DA0000-memory.dmp
memory/5068-15-0x0000000074334000-0x0000000074335000-memory.dmp
memory/5068-18-0x0000000005370000-0x0000000005DA0000-memory.dmp
memory/5068-14-0x00000000776E1000-0x0000000077801000-memory.dmp