Analysis
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max time kernel
151s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
03/10/2022, 22:47
Static task
static1
Behavioral task
behavioral1
Sample
4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe
Resource
win7-20220812-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
11 signatures
150 seconds
General
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Target
4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe
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Size
144KB
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MD5
39dbd72cd770300ece7d7e18c8558a10
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SHA1
dc6da0f9cb3320b03f6e3551e233fe40ed34570f
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SHA256
4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58
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SHA512
2e2db9aaa4c4692fbe95b24a852f6df2de2a37c57b5b45a12f32783ba3c373c323f004136485613e1a689a2718ba68f53d029491b5959a7bd27032936db40992
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SSDEEP
1536:NmNdIHWAlWiMr1GjDFsvRfaPwEq70TQ9IPcwlsl0KM7GvwqO/9r5:IIVltM5GjDCaPwF0s9Bwew/B
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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" riaofus.exe -
Executes dropped EXE 2 IoCs
pid Process 3376 riaofus.exe 1636 riaofus.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /l" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /t" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /d" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /y" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /r" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /q" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /c" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /g" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /v" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /j" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /x" riaofus.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /z" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /k" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /i" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /a" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /b" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /a" 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /e" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /h" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /n" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /s" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /p" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /u" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /m" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /w" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /f" riaofus.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaofus = "C:\\Users\\Admin\\riaofus.exe /o" riaofus.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 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum riaofus.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 riaofus.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 riaofus.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1284 set thread context of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 3376 set thread context of 1636 3376 riaofus.exe 97 -
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 4228 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 4228 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe 1636 riaofus.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 4228 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 3376 riaofus.exe 1636 riaofus.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 1284 wrote to memory of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 1284 wrote to memory of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 1284 wrote to memory of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 1284 wrote to memory of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 1284 wrote to memory of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 1284 wrote to memory of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 1284 wrote to memory of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 1284 wrote to memory of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 1284 wrote to memory of 4228 1284 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 86 PID 4228 wrote to memory of 3376 4228 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 94 PID 4228 wrote to memory of 3376 4228 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 94 PID 4228 wrote to memory of 3376 4228 4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe 94 PID 3376 wrote to memory of 1636 3376 riaofus.exe 97 PID 3376 wrote to memory of 1636 3376 riaofus.exe 97 PID 3376 wrote to memory of 1636 3376 riaofus.exe 97 PID 3376 wrote to memory of 1636 3376 riaofus.exe 97 PID 3376 wrote to memory of 1636 3376 riaofus.exe 97 PID 3376 wrote to memory of 1636 3376 riaofus.exe 97 PID 3376 wrote to memory of 1636 3376 riaofus.exe 97 PID 3376 wrote to memory of 1636 3376 riaofus.exe 97 PID 3376 wrote to memory of 1636 3376 riaofus.exe 97
Processes
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C:\Users\Admin\AppData\Local\Temp\4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe"C:\Users\Admin\AppData\Local\Temp\4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1284 -
C:\Users\Admin\AppData\Local\Temp\4d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58.exe722⤵
- 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:4228 -
C:\Users\Admin\riaofus.exe"C:\Users\Admin\riaofus.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3376 -
C:\Users\Admin\riaofus.exe724⤵
- 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:1636
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
144KB
MD539dbd72cd770300ece7d7e18c8558a10
SHA1dc6da0f9cb3320b03f6e3551e233fe40ed34570f
SHA2564d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58
SHA5122e2db9aaa4c4692fbe95b24a852f6df2de2a37c57b5b45a12f32783ba3c373c323f004136485613e1a689a2718ba68f53d029491b5959a7bd27032936db40992
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Filesize
144KB
MD539dbd72cd770300ece7d7e18c8558a10
SHA1dc6da0f9cb3320b03f6e3551e233fe40ed34570f
SHA2564d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58
SHA5122e2db9aaa4c4692fbe95b24a852f6df2de2a37c57b5b45a12f32783ba3c373c323f004136485613e1a689a2718ba68f53d029491b5959a7bd27032936db40992
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Filesize
144KB
MD539dbd72cd770300ece7d7e18c8558a10
SHA1dc6da0f9cb3320b03f6e3551e233fe40ed34570f
SHA2564d34f05db55e670e105ae028c93ddd649e1e05f33be7c68a57d7b82a4fdd8e58
SHA5122e2db9aaa4c4692fbe95b24a852f6df2de2a37c57b5b45a12f32783ba3c373c323f004136485613e1a689a2718ba68f53d029491b5959a7bd27032936db40992