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Analysis
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max time kernel
153s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
11/10/2022, 20:55
Static task
static1
Behavioral task
behavioral1
Sample
66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe
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Size
80KB
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MD5
6a4947920c1862bdb2fa38c1e6e91bf0
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SHA1
dd51f34342f19298454e67bcd1920e1099ff4363
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SHA256
66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6
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SHA512
93567a9fea3c7961923e8972160ca978a7e628b391f6a0ce88a8abd36b23f094e565dfe8dcc9932769008446f7740e65bb2fc0e887096404556c9ef9e7e62eb7
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SSDEEP
1536:komto4AJyF8e/O+TtSv6DhjFEA5n6qtvmzrRptAi858J8MGu1v3i6EGt:j4Q3t
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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" sfsir.exe -
Executes dropped EXE 1 IoCs
pid Process 1784 sfsir.exe -
Loads dropped DLL 2 IoCs
pid Process 1788 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe 1788 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /k" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /v" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /c" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /w" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /o" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /e" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /x" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /n" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /f" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /r" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /y" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /d" sfsir.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe Key created \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /l" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /u" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /h" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /t" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /p" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /g" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /z" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /m" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /s" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /a" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /h" 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /q" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /j" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /i" sfsir.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\sfsir = "C:\\Users\\Admin\\sfsir.exe /b" sfsir.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 1788 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe 1784 sfsir.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1788 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe 1784 sfsir.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1788 wrote to memory of 1784 1788 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe 28 PID 1788 wrote to memory of 1784 1788 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe 28 PID 1788 wrote to memory of 1784 1788 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe 28 PID 1788 wrote to memory of 1784 1788 66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.exe"C:\Users\Admin\AppData\Local\Temp\66b9476368cf9976d87f6d418b94f12ba70dc4630998a9d9fb87b7885ad403f6.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:1788 -
C:\Users\Admin\sfsir.exe"C:\Users\Admin\sfsir.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:1784
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
80KB
MD5dccb0e08894d0dbf678709db47a8478c
SHA107baa8dd4bebd9cef7ca141b88186dc147a94da8
SHA2562085a7e347a10478a5df07695b3fded9523a4a44834a7b4d92825d390a260ea5
SHA5120b70d850116d8d9ab3ad039b99d1462de2ad6e28c5bad49c725b61155ace9f59e1d99b5681565099c55f041978b6c8786b92de0e572b0ac68b011b2a5049ad5c
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Filesize
80KB
MD5dccb0e08894d0dbf678709db47a8478c
SHA107baa8dd4bebd9cef7ca141b88186dc147a94da8
SHA2562085a7e347a10478a5df07695b3fded9523a4a44834a7b4d92825d390a260ea5
SHA5120b70d850116d8d9ab3ad039b99d1462de2ad6e28c5bad49c725b61155ace9f59e1d99b5681565099c55f041978b6c8786b92de0e572b0ac68b011b2a5049ad5c
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Filesize
80KB
MD5dccb0e08894d0dbf678709db47a8478c
SHA107baa8dd4bebd9cef7ca141b88186dc147a94da8
SHA2562085a7e347a10478a5df07695b3fded9523a4a44834a7b4d92825d390a260ea5
SHA5120b70d850116d8d9ab3ad039b99d1462de2ad6e28c5bad49c725b61155ace9f59e1d99b5681565099c55f041978b6c8786b92de0e572b0ac68b011b2a5049ad5c
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Filesize
80KB
MD5dccb0e08894d0dbf678709db47a8478c
SHA107baa8dd4bebd9cef7ca141b88186dc147a94da8
SHA2562085a7e347a10478a5df07695b3fded9523a4a44834a7b4d92825d390a260ea5
SHA5120b70d850116d8d9ab3ad039b99d1462de2ad6e28c5bad49c725b61155ace9f59e1d99b5681565099c55f041978b6c8786b92de0e572b0ac68b011b2a5049ad5c