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Analysis
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max time kernel
150s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
09/03/2024, 23:47
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe
Resource
win7-20240221-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe
Resource
win10v2004-20240226-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe
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Size
364KB
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MD5
2857bbd256426c281ec69bdd84c97e9d
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SHA1
542a43c85687bcdb7d1830fd5c503a13a97a17c2
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SHA256
91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378
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SHA512
1b0f6bde4e86ff01fea795a9c357c9643ebdcaf4c54d027b4b3eb20199d828022f4a36b20482c4ddc4ac657782d527bfee3615202ac95c82cfaf58a0f64c667e
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SSDEEP
1536:wmM6l02OnFBJii6Hf8O6j6/t66366Z6Jz36s6eA66KD6sqG/Oj9h6FA8HxAH6xMt:1O2OnFfSkAz0LMZZZZWMkIJj
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe Set value (int) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yiief.exe -
Executes dropped EXE 1 IoCs
pid Process 2996 yiief.exe -
Loads dropped DLL 2 IoCs
pid Process 2484 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe 2484 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe -
Adds Run key to start application 2 TTPs 27 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /b" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /r" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /p" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /f" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /q" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /y" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /l" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /z" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /k" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /w" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /j" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /h" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /u" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /n" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /g" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /d" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /x" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /s" 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /s" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /i" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /e" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /a" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /c" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /m" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /v" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /o" yiief.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\yiief = "C:\\Users\\Admin\\yiief.exe /t" yiief.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2484 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe 2996 yiief.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2484 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe 2996 yiief.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2484 wrote to memory of 2996 2484 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe 28 PID 2484 wrote to memory of 2996 2484 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe 28 PID 2484 wrote to memory of 2996 2484 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe 28 PID 2484 wrote to memory of 2996 2484 91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe"C:\Users\Admin\AppData\Local\Temp\91f03d4aefac1d3ad9067761450f48093dcddc567bbca92d3dcb221a4bb23378.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2484 -
C:\Users\Admin\yiief.exe"C:\Users\Admin\yiief.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2996
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
364KB
MD54d456ef2e847b344978cb94892f94eb8
SHA1cb3c469b27e53e96fc118c143040f8793d81853e
SHA256e92879812211d1aa07c49ba494c0f3db59daa4d9272d710ed98529f7d2ce36b5
SHA5126e21b16e346967fa9690391f71c622be5f19cc2069b23fb549a419693d0a5e2d5c631338e6ffa4e483dd96a2c9ba9f5b401fc42db962a64e2ade0fd2562daa2e