Analysis
- max time kernel
147s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
- submitted
06/05/2024, 12:30
General
- Target Stolprende.exe
- Size 685KB
- Sample240506-ppln7abf61
- SHA256 b073ae4a0ecc5af2e1e13862e97aa242768fe6f3ce1a0eb5bce474be65a5a0a7
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 2 IoCs
- Drops file in Windows directory 6 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Modifies registry class 2 IoCs
- Suspicious behavior: EnumeratesProcesses 48 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\Stolprende.exe"C:\Users\Admin\AppData\Local\Temp\Stolprende.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\Stolprende.exe"C:\Users\Admin\AppData\Local\Temp\Stolprende.exe"3⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\fontview.exe"C:\Windows\SysWOW64\fontview.exe"4⤵
- 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"5⤵
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/1696-155-0x000002954F500000-0x000002954F5E9000-memory.dmp
memory/2272-109-0x0000000004910000-0x00000000054F7000-memory.dmp
memory/2272-110-0x00000000773E1000-0x0000000077501000-memory.dmp
memory/2272-111-0x0000000010004000-0x0000000010005000-memory.dmp
memory/2272-114-0x0000000004910000-0x00000000054F7000-memory.dmp
memory/2272-130-0x0000000004910000-0x00000000054F7000-memory.dmp
memory/3364-148-0x00000000032F0000-0x00000000033D6000-memory.dmp
memory/3364-141-0x000000000DD00000-0x000000000F2F4000-memory.dmp
memory/4488-147-0x0000000001040000-0x000000000107F000-memory.dmp
memory/4488-143-0x0000000001040000-0x000000000107F000-memory.dmp
memory/4592-132-0x0000000000401000-0x0000000000404000-memory.dmp
memory/4592-139-0x0000000000401000-0x0000000000404000-memory.dmp
memory/4592-133-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4592-134-0x0000000001660000-0x0000000002247000-memory.dmp
memory/4592-135-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4592-136-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4592-137-0x00000000773E1000-0x0000000077501000-memory.dmp
memory/4592-131-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4592-129-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4592-142-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4592-116-0x0000000077485000-0x0000000077486000-memory.dmp
memory/4592-145-0x0000000000401000-0x0000000000404000-memory.dmp
memory/4592-146-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4592-115-0x0000000077468000-0x0000000077469000-memory.dmp
memory/4592-113-0x0000000001660000-0x0000000002247000-memory.dmp
memory/4592-112-0x0000000000400000-0x0000000001654000-memory.dmp