Analysis
- max time kernel
137s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
14/05/2024, 15:25
General
- Target 33235438feeea0e2b76c3038503e83b3f79f80fbc6eccc93949de24ab693421a.exe
- Size 671KB
- Sample240514-stps7ach24
- SHA256 33235438feeea0e2b76c3038503e83b3f79f80fbc6eccc93949de24ab693421a
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 1 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).
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\33235438feeea0e2b76c3038503e83b3f79f80fbc6eccc93949de24ab693421a.exe"C:\Users\Admin\AppData\Local\Temp\33235438feeea0e2b76c3038503e83b3f79f80fbc6eccc93949de24ab693421a.exe"1⤵
- 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
-
C:\Users\Admin\AppData\Local\Temp\33235438feeea0e2b76c3038503e83b3f79f80fbc6eccc93949de24ab693421a.exe"C:\Users\Admin\AppData\Local\Temp\33235438feeea0e2b76c3038503e83b3f79f80fbc6eccc93949de24ab693421a.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 9443⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4876 -ip 48761⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/3172-114-0x0000000004A70000-0x0000000006492000-memory.dmp
memory/3172-109-0x0000000004A70000-0x0000000006492000-memory.dmp
memory/3172-110-0x0000000077C61000-0x0000000077D81000-memory.dmp
memory/3172-111-0x0000000010004000-0x0000000010005000-memory.dmp
memory/3172-130-0x0000000004A70000-0x0000000006492000-memory.dmp
memory/4876-116-0x0000000077D05000-0x0000000077D06000-memory.dmp
memory/4876-115-0x0000000077CE8000-0x0000000077CE9000-memory.dmp
memory/4876-113-0x0000000001660000-0x0000000003082000-memory.dmp
memory/4876-129-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4876-112-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4876-131-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4876-132-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4876-133-0x0000000001660000-0x0000000003082000-memory.dmp
memory/4876-134-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4876-135-0x0000000077C61000-0x0000000077D81000-memory.dmp