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Analysis
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max time kernel
119s -
max time network
98s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
20/11/2024, 18:32
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe
Resource
win7-20240708-en
windows7-x64
9 signatures
120 seconds
Behavioral task
behavioral2
Sample
8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
9 signatures
120 seconds
General
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Target
8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe
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Size
75KB
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MD5
e028c7a90bd94ea88e9f070030ad3b98
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SHA1
db25c77adab60b51861b961772987b781ba374f3
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SHA256
8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05
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SHA512
3d38d4b04b011d9bb134353de3c603579966fd5c0ad40481de3f2566543b41b1c120c1b9d5ad391b533b140eb96a972e43a46f5bb4ab75bb16c66fafeed2b14b
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SSDEEP
1536:F4Qp441sjPEutHwHiHoHV/NBbgzrqNldFCnDNlN1t7gqi:+Qa4Yc/NBbgzrqNldFCnDNlN1Pi
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" nuibuu.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation 8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe -
Executes dropped EXE 1 IoCs
pid Process 3532 nuibuu.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nuibuu = "C:\\Users\\Admin\\nuibuu.exe" nuibuu.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language nuibuu.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe 3532 nuibuu.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4968 8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe 3532 nuibuu.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 4968 wrote to memory of 3532 4968 8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe 88 PID 4968 wrote to memory of 3532 4968 8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe 88 PID 4968 wrote to memory of 3532 4968 8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe 88 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82 PID 3532 wrote to memory of 4968 3532 nuibuu.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe"C:\Users\Admin\AppData\Local\Temp\8b995fc841b62a3e324a68f58c03b13beea0d64fa9c4742a74bd862f5f477e05.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4968 -
C:\Users\Admin\nuibuu.exe"C:\Users\Admin\nuibuu.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3532
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
75KB
MD5eb39a633aa39bcb61c72e8e20cc29141
SHA157fdc30b0c895c1405f4abb89b96015206333eb0
SHA25630a92edb3ea93eb6e1cafb143206a3f6aa3e66f9531fb53547e78d79e03bb7d4
SHA5125d26192db9863d304754d1698cbeb051a50090bb3e7f75213139f5fdfdc534b26afc852d1eb4a550c82c935f93cd16bf4e1a4914bc62c3b3127ed874932eaa9d