Analysis
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max time kernel
155s -
max time network
176s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
05/12/2022, 20:23
Static task
static1
Behavioral task
behavioral1
Sample
74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe
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Size
100KB
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MD5
529815b650c71382c6396bc9080756ff
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SHA1
8354fe9686624bc6783c89bde6b3447668c72472
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SHA256
74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856
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SHA512
c7d241573d86b12c97c4ea8b69b605b2c25a635043495cefd1d3dbcdb38693d05d6181a2e1b4c90a7fcc8dc8300c98c4fcab95db8c0554120942ccdbfd16ec4d
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SSDEEP
1536:vTt0u82NTdwYLGZcYADZPU1+73BD88b0ny5NIjni:Bw/gZPUQJ5Cni
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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yuociun.exe -
Executes dropped EXE 1 IoCs
pid Process 4920 yuociun.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe -
Adds Run key to start application 2 TTPs 54 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /C" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /o" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /x" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /I" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /h" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /c" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /k" yuociun.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /B" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /b" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /G" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /Y" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /m" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /f" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /r" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /p" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /Z" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /S" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /A" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /H" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /j" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /n" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /d" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /s" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /O" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /K" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /z" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /t" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /E" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /Q" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /e" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /W" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /D" yuociun.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /u" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /y" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /g" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /v" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /U" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /N" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /X" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /P" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /V" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /F" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /J" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /f" 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /M" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /a" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /i" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /l" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /L" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /w" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /q" yuociun.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuociun = "C:\\Users\\Admin\\yuociun.exe /R" yuociun.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 1280 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe 1280 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe 4920 yuociun.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1280 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe 4920 yuociun.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1280 wrote to memory of 4920 1280 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe 86 PID 1280 wrote to memory of 4920 1280 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe 86 PID 1280 wrote to memory of 4920 1280 74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe"C:\Users\Admin\AppData\Local\Temp\74832d7b67ab54e9e0c06563b1605c8ebf25b06d544e16f29ba6f8e1404c8856.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1280 -
C:\Users\Admin\yuociun.exe"C:\Users\Admin\yuociun.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:4920
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
100KB
MD542c9c2bce566f654ea4113ff7d1cd243
SHA134b09a25570d7106f294541de4a26fc57eb8c3de
SHA256eaef800f19d8ef44503566d36d06183e05e5f035888b44193b58af34139607d3
SHA512d9bfae1deae1f75039e84b51307f05fb454a3954540191049f4737b69ea31cd827220c3085be61a16f235da33a8a5877a72d78fe7ec8ae8cd53677350c62e587
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Filesize
100KB
MD542c9c2bce566f654ea4113ff7d1cd243
SHA134b09a25570d7106f294541de4a26fc57eb8c3de
SHA256eaef800f19d8ef44503566d36d06183e05e5f035888b44193b58af34139607d3
SHA512d9bfae1deae1f75039e84b51307f05fb454a3954540191049f4737b69ea31cd827220c3085be61a16f235da33a8a5877a72d78fe7ec8ae8cd53677350c62e587