Analysis
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max time kernel
151s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
05-12-2022 22:07
Static task
static1
Behavioral task
behavioral1
Sample
e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe
Resource
win7-20220812-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe
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Size
240KB
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MD5
b6921d88d598f9b85549858e4a867ef9
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SHA1
64d1c68278671301654dbd4825382093736cb666
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SHA256
e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9
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SHA512
2185c32cbbc1d3ece6ac4129012595f44fc89464f4e7f5327db2f7d7ab6edeb719d418a23ed7c20a5ac35a42585930f2c2e48cdbda593a638178136e4f027401
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SSDEEP
3072:DPzEAPZBtw7SJjBrz/Q5w+tPgZMXC6FylcwBImXRgXfwo:7zzi7SJFzQ53uZOC6Fy+O4
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-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" muiato.exe -
Executes dropped EXE 1 IoCs
pid Process 1356 muiato.exe -
Loads dropped DLL 2 IoCs
pid Process 1516 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe 1516 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /n" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /w" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /p" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /i" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /g" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /m" e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /c" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /a" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /d" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /m" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /f" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /q" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /z" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /e" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /s" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /x" muiato.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /b" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /h" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /v" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /k" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /l" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /t" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /o" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /y" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /r" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /j" muiato.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\muiato = "C:\\Users\\Admin\\muiato.exe /u" muiato.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 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum muiato.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 muiato.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 1516 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe 1356 muiato.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1516 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe 1356 muiato.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1516 wrote to memory of 1356 1516 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe 27 PID 1516 wrote to memory of 1356 1516 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe 27 PID 1516 wrote to memory of 1356 1516 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe 27 PID 1516 wrote to memory of 1356 1516 e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe"C:\Users\Admin\AppData\Local\Temp\e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1516 -
C:\Users\Admin\muiato.exe"C:\Users\Admin\muiato.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1356
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
240KB
MD5b6921d88d598f9b85549858e4a867ef9
SHA164d1c68278671301654dbd4825382093736cb666
SHA256e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9
SHA5122185c32cbbc1d3ece6ac4129012595f44fc89464f4e7f5327db2f7d7ab6edeb719d418a23ed7c20a5ac35a42585930f2c2e48cdbda593a638178136e4f027401
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Filesize
240KB
MD5b6921d88d598f9b85549858e4a867ef9
SHA164d1c68278671301654dbd4825382093736cb666
SHA256e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9
SHA5122185c32cbbc1d3ece6ac4129012595f44fc89464f4e7f5327db2f7d7ab6edeb719d418a23ed7c20a5ac35a42585930f2c2e48cdbda593a638178136e4f027401
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Filesize
240KB
MD5b6921d88d598f9b85549858e4a867ef9
SHA164d1c68278671301654dbd4825382093736cb666
SHA256e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9
SHA5122185c32cbbc1d3ece6ac4129012595f44fc89464f4e7f5327db2f7d7ab6edeb719d418a23ed7c20a5ac35a42585930f2c2e48cdbda593a638178136e4f027401
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Filesize
240KB
MD5b6921d88d598f9b85549858e4a867ef9
SHA164d1c68278671301654dbd4825382093736cb666
SHA256e38657e1bfe08491ddf5acdb9d3bc4e8e4f4f5d724b471ba2794f6425b8c2ec9
SHA5122185c32cbbc1d3ece6ac4129012595f44fc89464f4e7f5327db2f7d7ab6edeb719d418a23ed7c20a5ac35a42585930f2c2e48cdbda593a638178136e4f027401