Analysis
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max time kernel
150s -
max time network
188s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
12/10/2022, 14:58
Static task
static1
Behavioral task
behavioral1
Sample
f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe
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Size
224KB
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MD5
4ac159e1a786619307ddd1f2b9ca8270
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SHA1
121242a9088d2a5bb72f94477583852bfb9ec1fb
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SHA256
f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357
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SHA512
27780a7af07d650c4f77e81c1c03c152b69b28f27cf5a60fbcfd1b36e977047c10181c70e87bdcc87fa6306f708ce564e40d38c6790694adc0ce404a60642edd
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SSDEEP
3072:g4F+94WnEpicE8aAF/OVRjOUbaxxmLQTi2C/9Ks3T+Nru7:gu+umipaAFGDUJS
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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yioava.exe -
Executes dropped EXE 1 IoCs
pid Process 2036 yioava.exe -
Loads dropped DLL 2 IoCs
pid Process 888 f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe 888 f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /z" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /n" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /c" f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /i" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /s" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /f" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /p" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /t" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /h" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /y" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /l" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /x" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /j" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /o" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /c" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /u" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /m" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /r" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /e" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /a" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /q" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /b" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /w" yioava.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /v" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /d" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /g" yioava.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yioava = "C:\\Users\\Admin\\yioava.exe /k" yioava.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 888 f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe 2036 yioava.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 888 f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe 2036 yioava.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 888 wrote to memory of 2036 888 f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe 27 PID 888 wrote to memory of 2036 888 f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe 27 PID 888 wrote to memory of 2036 888 f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe 27 PID 888 wrote to memory of 2036 888 f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.exe"C:\Users\Admin\AppData\Local\Temp\f5d00dc51f16230232c8a781182ac75c9b5fd5673b37788262de647bc1870357.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:888 -
C:\Users\Admin\yioava.exe"C:\Users\Admin\yioava.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:2036
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
224KB
MD53cdc08a24a53e3e7a5b002e1a18de29d
SHA17b2ad484dabe704059d77afe2eee011f9c122f04
SHA256596302c521b4fbe56a235e9a97f694602b91c63877003a88396c33d2b0d44bcc
SHA5121be0b48697b7524c7f0c64159161d8b6858bf173ba8818e02009a97c7a7128ed39f912d5fc01867de18e2f45b1ca2477fb016aa3775c6b6648974b75bc609155
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Filesize
224KB
MD53cdc08a24a53e3e7a5b002e1a18de29d
SHA17b2ad484dabe704059d77afe2eee011f9c122f04
SHA256596302c521b4fbe56a235e9a97f694602b91c63877003a88396c33d2b0d44bcc
SHA5121be0b48697b7524c7f0c64159161d8b6858bf173ba8818e02009a97c7a7128ed39f912d5fc01867de18e2f45b1ca2477fb016aa3775c6b6648974b75bc609155
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Filesize
224KB
MD53cdc08a24a53e3e7a5b002e1a18de29d
SHA17b2ad484dabe704059d77afe2eee011f9c122f04
SHA256596302c521b4fbe56a235e9a97f694602b91c63877003a88396c33d2b0d44bcc
SHA5121be0b48697b7524c7f0c64159161d8b6858bf173ba8818e02009a97c7a7128ed39f912d5fc01867de18e2f45b1ca2477fb016aa3775c6b6648974b75bc609155
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Filesize
224KB
MD53cdc08a24a53e3e7a5b002e1a18de29d
SHA17b2ad484dabe704059d77afe2eee011f9c122f04
SHA256596302c521b4fbe56a235e9a97f694602b91c63877003a88396c33d2b0d44bcc
SHA5121be0b48697b7524c7f0c64159161d8b6858bf173ba8818e02009a97c7a7128ed39f912d5fc01867de18e2f45b1ca2477fb016aa3775c6b6648974b75bc609155