Analysis
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max time kernel
152s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
05/12/2022, 22:22
Static task
static1
Behavioral task
behavioral1
Sample
b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe
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Size
244KB
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MD5
712303dc448a303a7f0d42495677aa27
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SHA1
db2571214caa16d7160cb7c3436d063b6d653f05
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SHA256
b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97
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SHA512
84d2c076bc29780c14ad2696114beb1be0bcb50aab917cdb4bf47b7bf23e69d9c1cdbeceaf051d40a4d7a4c3ce6f8953f97866256a2e840f8e016b47a0cb4e46
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SSDEEP
6144:eaw8DFe0qip4r1XNOmNBLxAG7H59R7g0fY4rGK/fObT/bGijVq1Wzr/+mNGXnFGi:eR8DFe0qip4rZNOm3FAG7H59R7g0fY4f
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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" nuiri.exe -
Executes dropped EXE 1 IoCs
pid Process 1520 nuiri.exe -
Loads dropped DLL 2 IoCs
pid Process 1388 b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe 1388 b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe -
Adds Run key to start application 2 TTPs 51 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /n" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /A" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /Q" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /V" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /H" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /d" nuiri.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /B" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /P" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /g" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /N" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /t" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /p" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /K" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /L" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /x" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /v" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /I" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /U" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /F" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /T" nuiri.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /D" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /o" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /k" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /s" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /M" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /h" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /w" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /q" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /i" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /O" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /c" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /z" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /E" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /e" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /R" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /a" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /Z" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /l" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /b" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /t" b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /Y" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /f" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /C" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /u" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /y" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /m" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /W" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /J" nuiri.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nuiri = "C:\\Users\\Admin\\nuiri.exe /X" nuiri.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 1388 b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe 1520 nuiri.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1388 b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe 1520 nuiri.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1388 wrote to memory of 1520 1388 b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe 27 PID 1388 wrote to memory of 1520 1388 b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe 27 PID 1388 wrote to memory of 1520 1388 b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe 27 PID 1388 wrote to memory of 1520 1388 b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.exe"C:\Users\Admin\AppData\Local\Temp\b9a4f4104c73fa64c0eaa7cc9d978cc7e0f28ab9d915b28d963f3832d6192b97.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:1388 -
C:\Users\Admin\nuiri.exe"C:\Users\Admin\nuiri.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:1520
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
244KB
MD5eafe4957e9277fceaaf7b86de9690208
SHA1751da961212ff1ad161feac57f51e3394f5778c1
SHA2566c2d30ba93d65e223861f2d68dc445f42eb2b48e2532bade06d0b8280a15e7c3
SHA5121f6166b91697cd7b0eedc6fedd8f0674648848a86d99e6f04138d79b5c5bec1b0157f05221206ad84c608712cfc13fcdefdca2e2fea2f485b909da8c8547542f
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Filesize
244KB
MD5eafe4957e9277fceaaf7b86de9690208
SHA1751da961212ff1ad161feac57f51e3394f5778c1
SHA2566c2d30ba93d65e223861f2d68dc445f42eb2b48e2532bade06d0b8280a15e7c3
SHA5121f6166b91697cd7b0eedc6fedd8f0674648848a86d99e6f04138d79b5c5bec1b0157f05221206ad84c608712cfc13fcdefdca2e2fea2f485b909da8c8547542f
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Filesize
244KB
MD5eafe4957e9277fceaaf7b86de9690208
SHA1751da961212ff1ad161feac57f51e3394f5778c1
SHA2566c2d30ba93d65e223861f2d68dc445f42eb2b48e2532bade06d0b8280a15e7c3
SHA5121f6166b91697cd7b0eedc6fedd8f0674648848a86d99e6f04138d79b5c5bec1b0157f05221206ad84c608712cfc13fcdefdca2e2fea2f485b909da8c8547542f
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Filesize
244KB
MD5eafe4957e9277fceaaf7b86de9690208
SHA1751da961212ff1ad161feac57f51e3394f5778c1
SHA2566c2d30ba93d65e223861f2d68dc445f42eb2b48e2532bade06d0b8280a15e7c3
SHA5121f6166b91697cd7b0eedc6fedd8f0674648848a86d99e6f04138d79b5c5bec1b0157f05221206ad84c608712cfc13fcdefdca2e2fea2f485b909da8c8547542f