Analysis
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max time kernel
197s -
max time network
220s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
01/12/2022, 23:54
Static task
static1
Behavioral task
behavioral1
Sample
df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe
Resource
win7-20220812-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
11 signatures
150 seconds
General
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Target
df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe
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Size
92KB
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MD5
095fef8c46d0dfbb31e0683e69c01380
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SHA1
a5b9bc5996148bffbfa6804cc9afc30b24af35a5
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SHA256
df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255
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SHA512
ad2d3d6ce66105018d42be5edb94fb49299783cf1e33e2a3833da4a5d6ef62a29527df197066baa6e7f24a2b22edee031cc8061a652041857f6f461f08c52ad1
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SSDEEP
1536:8fT0MpE8CLksZ16k1+BBVsaoA8WZk4LnNcebB5khsp2:8VhCn0++bVsNPh4LN/B5csY
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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" buioj.exe -
Executes dropped EXE 2 IoCs
pid Process 3440 buioj.exe 1488 buioj.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /t" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /v" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /o" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /e" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /z" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /g" buioj.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\ buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /u" buioj.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\ df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /p" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /r" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /s" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /n" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /d" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /l" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /x" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /b" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /n" df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /y" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /j" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /i" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /h" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /c" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /q" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /f" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /m" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /w" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /a" buioj.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buioj = "C:\\Users\\Admin\\buioj.exe /k" buioj.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum buioj.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 buioj.exe -
Drops autorun.inf file 1 TTPs 1 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File opened for modification C:\Users\Admin\c\autorun.inf buioj.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4276 set thread context of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 3440 set thread context of 1488 3440 buioj.exe 85 -
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 2616 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 2616 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe 1488 buioj.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 2616 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 3440 buioj.exe 1488 buioj.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 4276 wrote to memory of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 4276 wrote to memory of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 4276 wrote to memory of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 4276 wrote to memory of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 4276 wrote to memory of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 4276 wrote to memory of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 4276 wrote to memory of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 4276 wrote to memory of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 4276 wrote to memory of 2616 4276 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 83 PID 2616 wrote to memory of 3440 2616 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 84 PID 2616 wrote to memory of 3440 2616 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 84 PID 2616 wrote to memory of 3440 2616 df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe 84 PID 3440 wrote to memory of 1488 3440 buioj.exe 85 PID 3440 wrote to memory of 1488 3440 buioj.exe 85 PID 3440 wrote to memory of 1488 3440 buioj.exe 85 PID 3440 wrote to memory of 1488 3440 buioj.exe 85 PID 3440 wrote to memory of 1488 3440 buioj.exe 85 PID 3440 wrote to memory of 1488 3440 buioj.exe 85 PID 3440 wrote to memory of 1488 3440 buioj.exe 85 PID 3440 wrote to memory of 1488 3440 buioj.exe 85 PID 3440 wrote to memory of 1488 3440 buioj.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe"C:\Users\Admin\AppData\Local\Temp\df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4276 -
C:\Users\Admin\AppData\Local\Temp\df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255.exe742⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2616 -
C:\Users\Admin\buioj.exe"C:\Users\Admin\buioj.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3440 -
C:\Users\Admin\buioj.exe744⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1488
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
92KB
MD5095fef8c46d0dfbb31e0683e69c01380
SHA1a5b9bc5996148bffbfa6804cc9afc30b24af35a5
SHA256df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255
SHA512ad2d3d6ce66105018d42be5edb94fb49299783cf1e33e2a3833da4a5d6ef62a29527df197066baa6e7f24a2b22edee031cc8061a652041857f6f461f08c52ad1
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Filesize
92KB
MD5095fef8c46d0dfbb31e0683e69c01380
SHA1a5b9bc5996148bffbfa6804cc9afc30b24af35a5
SHA256df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255
SHA512ad2d3d6ce66105018d42be5edb94fb49299783cf1e33e2a3833da4a5d6ef62a29527df197066baa6e7f24a2b22edee031cc8061a652041857f6f461f08c52ad1
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Filesize
92KB
MD5095fef8c46d0dfbb31e0683e69c01380
SHA1a5b9bc5996148bffbfa6804cc9afc30b24af35a5
SHA256df9045b57ad7e20270797f352d5cb5326193b29cd0490e8beb2700c0f1a26255
SHA512ad2d3d6ce66105018d42be5edb94fb49299783cf1e33e2a3833da4a5d6ef62a29527df197066baa6e7f24a2b22edee031cc8061a652041857f6f461f08c52ad1