Analysis
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max time kernel
150s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
30/10/2022, 00:17
Static task
static1
Behavioral task
behavioral1
Sample
afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe
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Size
250KB
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MD5
5f404f4efedc061f5bb9bcfc1f397e90
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SHA1
92f4062a8654306df5c0eee90ef93ec41f5fea30
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SHA256
afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9
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SHA512
7ef49786bc2530851f5d0052cf54d251792747416d66c8577b13c1b111a8acb9cb2021dd6bf446700ff14db2c58a3ad4e7f833ebdb0b33c8adadfec00a7a5a3b
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SSDEEP
3072:mXyqNsMoBuSXZVpl2mclbj4Uvx+8ysNOu+2eRcKksU61JkkX39RLrw4ySKUbax2b:ZqN5sp4LnbmlrZ3brf
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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" couuwi.exe -
Executes dropped EXE 1 IoCs
pid Process 1012 couuwi.exe -
Loads dropped DLL 2 IoCs
pid Process 1000 afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe 1000 afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /j" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /a" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /d" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /n" afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /k" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /y" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /r" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /q" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /x" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /h" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /v" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /o" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /b" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /s" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /z" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /l" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /m" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /u" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /w" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /t" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /n" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /f" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /i" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /e" couuwi.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /c" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /g" couuwi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\couuwi = "C:\\Users\\Admin\\couuwi.exe /p" couuwi.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 1000 afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe 1012 couuwi.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1000 afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe 1012 couuwi.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1000 wrote to memory of 1012 1000 afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe 27 PID 1000 wrote to memory of 1012 1000 afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe 27 PID 1000 wrote to memory of 1012 1000 afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe 27 PID 1000 wrote to memory of 1012 1000 afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe"C:\Users\Admin\AppData\Local\Temp\afb872ccfeb8d8b19637678bff58261235dc4b3ff5c5bdea855a57694a600bb9.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1000 -
C:\Users\Admin\couuwi.exe"C:\Users\Admin\couuwi.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:1012
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
250KB
MD5787362295266d3598f9b2f9cdc2fb7ba
SHA128bdb9dd7c429c385714af548f021360682b7c73
SHA256fd8e874d11e8eff07fd17f5a22fbb2007f0db2499d62f8fb08dc297c3189c4b7
SHA512efef362ace6d5bbcdc775982f41a628d9dfac176f8751744083dabb167c2260255ef04724fb8a087b256cf6bc74549b4e70cdbb753e772d5d1bc56d7d04dd675
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Filesize
250KB
MD5787362295266d3598f9b2f9cdc2fb7ba
SHA128bdb9dd7c429c385714af548f021360682b7c73
SHA256fd8e874d11e8eff07fd17f5a22fbb2007f0db2499d62f8fb08dc297c3189c4b7
SHA512efef362ace6d5bbcdc775982f41a628d9dfac176f8751744083dabb167c2260255ef04724fb8a087b256cf6bc74549b4e70cdbb753e772d5d1bc56d7d04dd675
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Filesize
250KB
MD5787362295266d3598f9b2f9cdc2fb7ba
SHA128bdb9dd7c429c385714af548f021360682b7c73
SHA256fd8e874d11e8eff07fd17f5a22fbb2007f0db2499d62f8fb08dc297c3189c4b7
SHA512efef362ace6d5bbcdc775982f41a628d9dfac176f8751744083dabb167c2260255ef04724fb8a087b256cf6bc74549b4e70cdbb753e772d5d1bc56d7d04dd675
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Filesize
250KB
MD5787362295266d3598f9b2f9cdc2fb7ba
SHA128bdb9dd7c429c385714af548f021360682b7c73
SHA256fd8e874d11e8eff07fd17f5a22fbb2007f0db2499d62f8fb08dc297c3189c4b7
SHA512efef362ace6d5bbcdc775982f41a628d9dfac176f8751744083dabb167c2260255ef04724fb8a087b256cf6bc74549b4e70cdbb753e772d5d1bc56d7d04dd675