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Analysis
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max time kernel
140s -
max time network
117s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
31/12/2023, 13:07
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
3749239871d1967c508845009be30d03.exe
Resource
win7-20231129-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
3749239871d1967c508845009be30d03.exe
Resource
win10v2004-20231222-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
3749239871d1967c508845009be30d03.exe
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Size
96KB
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MD5
3749239871d1967c508845009be30d03
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SHA1
f1a015f646233b4e1956e904c9d067774df35f1a
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SHA256
02b282e849ae6fceee2fd788aecff2c4fdacf08ba1a09de0b421f2086f8a65f8
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SHA512
87013e4dcd75eb5b4dc5a854192f7067d7b4da7c1fc704455b6d75a47bcb1dee7cee065e89d8406939d01e0c2d1f5b3fa92f0822f778a64ed2aa477b2c047600
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SSDEEP
1536:iohBHef6cOahokGulSc16l6u+NMMl/KlYv1T4hThFNNIjni:9IhRlu88FFNCni
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-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 3749239871d1967c508845009be30d03.exe Set value (int) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yiiyao.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation 3749239871d1967c508845009be30d03.exe -
Executes dropped EXE 1 IoCs
pid Process 2360 yiiyao.exe -
Adds Run key to start application 2 TTPs 51 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /E" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /Z" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /T" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /u" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /h" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /q" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /Q" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /A" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /R" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /z" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /g" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /L" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /J" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /G" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /I" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /U" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /F" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /K" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /H" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /B" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /n" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /e" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /w" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /P" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /Y" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /m" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /r" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /k" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /N" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /j" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /W" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /S" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /o" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /c" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /s" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /a" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /i" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /f" 3749239871d1967c508845009be30d03.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /C" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /X" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /V" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /M" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /D" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /O" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /d" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /y" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /l" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /x" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /b" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /f" yiiyao.exe Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiiyao = "C:\\Users\\Admin\\yiiyao.exe /t" yiiyao.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 4484 3749239871d1967c508845009be30d03.exe 4484 3749239871d1967c508845009be30d03.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe 2360 yiiyao.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4484 3749239871d1967c508845009be30d03.exe 2360 yiiyao.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4484 wrote to memory of 2360 4484 3749239871d1967c508845009be30d03.exe 90 PID 4484 wrote to memory of 2360 4484 3749239871d1967c508845009be30d03.exe 90 PID 4484 wrote to memory of 2360 4484 3749239871d1967c508845009be30d03.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\3749239871d1967c508845009be30d03.exe"C:\Users\Admin\AppData\Local\Temp\3749239871d1967c508845009be30d03.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4484 -
C:\Users\Admin\yiiyao.exe"C:\Users\Admin\yiiyao.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:2360
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
92KB
MD528a437078d5840b47284c8d590adc8ce
SHA109832b90f1dc3a4879ed7647af8766a83626feab
SHA256ead8acb6c9bc32ef7eff23a43146a3dd505ab88c69823770ae105beba739f7a3
SHA512f3be128909adc79bc1e4c7fd2a6897ac132583177209b6a62d16bf26ebf1d6cba1eb2e6ebeaa7dc6e1077739c128febe3ab5406f848eca63689cec787ddd5f3a
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Filesize
96KB
MD52cc2c5f6ad7b8199d26544f10aa25fe7
SHA176c74778a3e249c52294d1032cdb1c72888ed035
SHA256735315cf09977d5efec0b18cb537174bc0b835be3f7d6c44c34d0028ac1162fb
SHA512cf8a22df1608579a1310109ecd95792bdc5509039b368a28865e0fd6dcd75ea35b0919d26202f2fe418ea7267db8e7453478a57afc947087bed443dc0d9b55ff