Analysis
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max time kernel
153s -
max time network
99s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
01/12/2022, 23:20
Static task
static1
Behavioral task
behavioral1
Sample
6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe
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Size
220KB
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MD5
9d7c057e5c4a36be9928a1728ce49e2f
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SHA1
0f6776ca7feb21c585b7f6d9b2ed5d69285c5d1c
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SHA256
6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175
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SHA512
8b76e53524594faf0676cea56cbc01a3c0d6c687813a181299283a97dd693c0cbcab7c327ae396f96989765c17b16a04a57b990dd3f3667c7d3219b914a93144
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SSDEEP
3072:1yqwTnFkJ8YUL4qx9RIHgil3UuhSa3U3dDpd6Oy+MIrnj3JhNB:INJkS15x9SHVe1jZ
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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe Set value (int) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" biosi.exe -
Executes dropped EXE 1 IoCs
pid Process 676 biosi.exe -
Loads dropped DLL 2 IoCs
pid Process 1980 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe 1980 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe -
Adds Run key to start application 2 TTPs 28 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /p" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /q" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /r" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /m" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /i" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /l" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /z" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /y" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /d" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /b" biosi.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /d" 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /t" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /e" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /n" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /w" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /x" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /u" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /h" biosi.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\ biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /o" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /f" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /s" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /j" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /v" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /a" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /k" biosi.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\biosi = "C:\\Users\\Admin\\biosi.exe /g" biosi.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 1980 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe 676 biosi.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1980 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe 676 biosi.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1980 wrote to memory of 676 1980 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe 28 PID 1980 wrote to memory of 676 1980 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe 28 PID 1980 wrote to memory of 676 1980 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe 28 PID 1980 wrote to memory of 676 1980 6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.exe"C:\Users\Admin\AppData\Local\Temp\6cc38ff228144bf487ac32db38bd729cce5a97a3982d3438b9daac3817b91175.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:1980 -
C:\Users\Admin\biosi.exe"C:\Users\Admin\biosi.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:676
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
220KB
MD57a3546a9eb995d89f3db408bcd4ba185
SHA10ab06d8ef4abbf45e4aa1e258ad14a518a22e98b
SHA25676d64622a0f1b6239eb48c13c3c2cae7d20c956d21ad409e03c66cbddf4f2183
SHA5126749621d3b950269c4c274651caf9208317e81b3674d4472092f1d3c3426fc39b1719c86afe040f7cddcc1ee46e60f8f1c7728507e8a8547e2960758c70b3e05
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Filesize
220KB
MD57a3546a9eb995d89f3db408bcd4ba185
SHA10ab06d8ef4abbf45e4aa1e258ad14a518a22e98b
SHA25676d64622a0f1b6239eb48c13c3c2cae7d20c956d21ad409e03c66cbddf4f2183
SHA5126749621d3b950269c4c274651caf9208317e81b3674d4472092f1d3c3426fc39b1719c86afe040f7cddcc1ee46e60f8f1c7728507e8a8547e2960758c70b3e05
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Filesize
220KB
MD57a3546a9eb995d89f3db408bcd4ba185
SHA10ab06d8ef4abbf45e4aa1e258ad14a518a22e98b
SHA25676d64622a0f1b6239eb48c13c3c2cae7d20c956d21ad409e03c66cbddf4f2183
SHA5126749621d3b950269c4c274651caf9208317e81b3674d4472092f1d3c3426fc39b1719c86afe040f7cddcc1ee46e60f8f1c7728507e8a8547e2960758c70b3e05
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Filesize
220KB
MD57a3546a9eb995d89f3db408bcd4ba185
SHA10ab06d8ef4abbf45e4aa1e258ad14a518a22e98b
SHA25676d64622a0f1b6239eb48c13c3c2cae7d20c956d21ad409e03c66cbddf4f2183
SHA5126749621d3b950269c4c274651caf9208317e81b3674d4472092f1d3c3426fc39b1719c86afe040f7cddcc1ee46e60f8f1c7728507e8a8547e2960758c70b3e05