Analysis
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max time kernel
160s -
max time network
184s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
05-12-2022 09:50
Static task
static1
Behavioral task
behavioral1
Sample
796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe
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Size
144KB
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MD5
45c7c99b0b2892457683c065d0b5de06
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SHA1
cef5321d4e77f2fb17701ba678ac8a60cc99facf
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SHA256
796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54
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SHA512
747618bef7e3a4c39f7dbaada86c0c502b1763869622f559b0c41d232eee7ffe79496e0e09cb4c53101525c0d4de1e2988ee2c1b159d8199d704c8e4abe62ecf
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SSDEEP
1536:Lsc18EsOv5kGVX8rYHZlU6DHBdFbouQ1KeCrhYra78rrkqhpMQ/vFiXIVFQnaq98:ISRF8rYHZu6LBXo1MKks5iXIVFQnrSh
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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe Set value (int) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yuoci.exe -
Executes dropped EXE 1 IoCs
pid Process 3128 yuoci.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /k" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /s" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /w" yuoci.exe Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /d" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /x" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /l" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /e" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /a" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /g" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /r" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /j" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /z" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /y" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /o" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /v" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /m" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /b" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /c" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /f" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /g" 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /n" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /p" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /i" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /u" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /t" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /h" yuoci.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yuoci = "C:\\Users\\Admin\\yuoci.exe /q" yuoci.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 4844 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe 4844 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe 3128 yuoci.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4844 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe 3128 yuoci.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4844 wrote to memory of 3128 4844 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe 86 PID 4844 wrote to memory of 3128 4844 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe 86 PID 4844 wrote to memory of 3128 4844 796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.exe"C:\Users\Admin\AppData\Local\Temp\796780bfa0b5acd3eac051db494a2d5cec3257d22720159dabb00d5226067b54.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:4844 -
C:\Users\Admin\yuoci.exe"C:\Users\Admin\yuoci.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:3128
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
144KB
MD5c5f0eae52c55a55c042ffad2360d39da
SHA124065e03edb2e4876dc1fb50ede6dda4477a8a3d
SHA2561c89170977d7eb8cfb8cce2d03b84c672cf909b6ad771995f6542e3c8f9f7223
SHA512deb42f3a6c4a18a19f21b3af39fb005774c979b70e9842143af872930eb4267383bb7b13061caa61d9a49e2d4e4d16066f4c257b992dca19dece27dd27f1adab
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Filesize
144KB
MD5c5f0eae52c55a55c042ffad2360d39da
SHA124065e03edb2e4876dc1fb50ede6dda4477a8a3d
SHA2561c89170977d7eb8cfb8cce2d03b84c672cf909b6ad771995f6542e3c8f9f7223
SHA512deb42f3a6c4a18a19f21b3af39fb005774c979b70e9842143af872930eb4267383bb7b13061caa61d9a49e2d4e4d16066f4c257b992dca19dece27dd27f1adab