Analysis
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max time kernel
150s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
01/12/2022, 23:19
Static task
static1
Behavioral task
behavioral1
Sample
73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe
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Size
104KB
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MD5
ce082cce53245e3eab37f3e4c5033567
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SHA1
499997f7d5c23df2343eb814c3a0b62c301bd592
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SHA256
73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62
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SHA512
805f1862171c25258cd3677fbcd361c91eaeb8138b0480295acec53794690d2280af264d2df3549f31353aacb11c0cc95888503bd1d05bd974968c28864451e3
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SSDEEP
1536:wwLRvx+uzHs+HBchhQKNIqpOcQv0sTEFSocwB+XjLlm:5tM+eiKNZJQv0sToB+3s
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" 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" nxxus.exe -
Executes dropped EXE 1 IoCs
pid Process 268 nxxus.exe -
Loads dropped DLL 2 IoCs
pid Process 1676 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe 1676 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /a" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /g" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /x" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /e" 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /l" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /q" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /y" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /c" nxxus.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /t" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /i" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /m" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /f" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /n" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /u" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /j" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /h" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /v" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /k" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /o" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /d" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /e" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /p" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /z" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /w" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /r" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /b" nxxus.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxxus = "C:\\Users\\Admin\\nxxus.exe /s" nxxus.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 1676 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe 268 nxxus.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1676 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe 268 nxxus.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1676 wrote to memory of 268 1676 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe 28 PID 1676 wrote to memory of 268 1676 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe 28 PID 1676 wrote to memory of 268 1676 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe 28 PID 1676 wrote to memory of 268 1676 73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.exe"C:\Users\Admin\AppData\Local\Temp\73bf5d8c98fe654aa172fd664b929763833c58a0c3bf9926b1daa9902c9edb62.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:1676 -
C:\Users\Admin\nxxus.exe"C:\Users\Admin\nxxus.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:268
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
104KB
MD537c791f7604c4280dc925e5420691357
SHA191374813cd95984ea968dd1cbfa83b4ab7ddb33c
SHA2567a4d41052420a8b8341bcad1db7d023de19f69e06a30b427af0c9e43e825ec24
SHA512c92557cfe8c03c5836e459e6746f56506f27c1f6cf44beba006809fe75f3b8b89796345bf0b8f843a2c56d8efd68873187e5696678ddaddbb884e2c889722f75
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Filesize
104KB
MD537c791f7604c4280dc925e5420691357
SHA191374813cd95984ea968dd1cbfa83b4ab7ddb33c
SHA2567a4d41052420a8b8341bcad1db7d023de19f69e06a30b427af0c9e43e825ec24
SHA512c92557cfe8c03c5836e459e6746f56506f27c1f6cf44beba006809fe75f3b8b89796345bf0b8f843a2c56d8efd68873187e5696678ddaddbb884e2c889722f75
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Filesize
104KB
MD537c791f7604c4280dc925e5420691357
SHA191374813cd95984ea968dd1cbfa83b4ab7ddb33c
SHA2567a4d41052420a8b8341bcad1db7d023de19f69e06a30b427af0c9e43e825ec24
SHA512c92557cfe8c03c5836e459e6746f56506f27c1f6cf44beba006809fe75f3b8b89796345bf0b8f843a2c56d8efd68873187e5696678ddaddbb884e2c889722f75
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Filesize
104KB
MD537c791f7604c4280dc925e5420691357
SHA191374813cd95984ea968dd1cbfa83b4ab7ddb33c
SHA2567a4d41052420a8b8341bcad1db7d023de19f69e06a30b427af0c9e43e825ec24
SHA512c92557cfe8c03c5836e459e6746f56506f27c1f6cf44beba006809fe75f3b8b89796345bf0b8f843a2c56d8efd68873187e5696678ddaddbb884e2c889722f75