Analysis
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max time kernel
206s -
max time network
211s -
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, 10:42
Static task
static1
Behavioral task
behavioral1
Sample
9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe
Resource
win7-20220812-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe
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Size
256KB
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MD5
43d34709aa997edbfe8327fba2957f12
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SHA1
bd62aebe586e7ba19a4579aafab6c10d599bd436
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SHA256
9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966
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SHA512
e1f82ed42f8a30c73e10769cbaab8fdf849c2a1877a5f6f905e558df062bbd58f2e0dc7a6ce5dee778f2f9096b7db6ab6a3c57fdd7122d4ce96160405f01230f
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SSDEEP
3072:VraH9QMByfSd7yBov5dRvm7GG3n8P1R4qYVWdVIQk1rgXfhc:ZaH9QSeohCj341aqy5QK
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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" buiiqi.exe -
Executes dropped EXE 1 IoCs
pid Process 2924 buiiqi.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /h" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /k" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /u" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /v" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /m" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /e" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /p" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /o" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /d" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /r" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /q" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /j" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /w" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /u" 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /l" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /s" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /i" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /g" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /f" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /b" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /z" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /x" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /t" buiiqi.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /a" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /c" buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /y" buiiqi.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\ buiiqi.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\buiiqi = "C:\\Users\\Admin\\buiiqi.exe /n" buiiqi.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum buiiqi.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 buiiqi.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4816 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe 4816 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe 2924 buiiqi.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4816 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe 2924 buiiqi.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4816 wrote to memory of 2924 4816 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe 87 PID 4816 wrote to memory of 2924 4816 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe 87 PID 4816 wrote to memory of 2924 4816 9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe"C:\Users\Admin\AppData\Local\Temp\9ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4816 -
C:\Users\Admin\buiiqi.exe"C:\Users\Admin\buiiqi.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2924
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4280
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
256KB
MD543d34709aa997edbfe8327fba2957f12
SHA1bd62aebe586e7ba19a4579aafab6c10d599bd436
SHA2569ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966
SHA512e1f82ed42f8a30c73e10769cbaab8fdf849c2a1877a5f6f905e558df062bbd58f2e0dc7a6ce5dee778f2f9096b7db6ab6a3c57fdd7122d4ce96160405f01230f
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Filesize
256KB
MD543d34709aa997edbfe8327fba2957f12
SHA1bd62aebe586e7ba19a4579aafab6c10d599bd436
SHA2569ee8dd372df2d47adee0374ff65255cdbf766fdd669c5441ad488d22ddbd4966
SHA512e1f82ed42f8a30c73e10769cbaab8fdf849c2a1877a5f6f905e558df062bbd58f2e0dc7a6ce5dee778f2f9096b7db6ab6a3c57fdd7122d4ce96160405f01230f