Analysis
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max time kernel
150s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
21/10/2022, 02:39
Static task
static1
Behavioral task
behavioral1
Sample
5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe
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Size
84KB
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MD5
7617ddfba7a110bb5820e2508cfdd7f2
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SHA1
02d6908fa28be4fafb9aea3bde66bf8d36a066f3
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SHA256
5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da
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SHA512
57f78d04109301467be891c43abc0e5f32f20f8918d421ab7d4342f6763b1a4b8c217e95066ebc1acd86ee5c00d60d0e47c59a2a2288bbedcfb491e40af44eb5
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SSDEEP
1536:osedgu+16Lti8n42APNR2dcScLcPcxeTanuUHWOms3xxNMq39gk34iS5v:Fe4PNEdcScLcPcfnuS0hv
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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" bouiku.exe -
Executes dropped EXE 1 IoCs
pid Process 1320 bouiku.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /j" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /j" 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /z" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /i" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /p" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /w" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /d" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /h" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /a" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /b" bouiku.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /o" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /n" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /s" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /r" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /g" bouiku.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /v" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /l" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /y" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /u" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /x" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /t" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /e" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /m" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /q" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /c" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /k" bouiku.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bouiku = "C:\\Users\\Admin\\bouiku.exe /f" bouiku.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 4760 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe 4760 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe 1320 bouiku.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4760 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe 1320 bouiku.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4760 wrote to memory of 1320 4760 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe 83 PID 4760 wrote to memory of 1320 4760 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe 83 PID 4760 wrote to memory of 1320 4760 5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe"C:\Users\Admin\AppData\Local\Temp\5b51d0345826404ee1361892689409975a2af2b71d8ab348b1f84a14127da9da.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4760 -
C:\Users\Admin\bouiku.exe"C:\Users\Admin\bouiku.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:1320
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
84KB
MD5d76e6075671c8714f85976a1aafdfbc2
SHA157e3dd516e0dd834f06599d5a5b13e2c73d60c9e
SHA256df57675bf074e69246424a3d079826d2f1c94155e2e00da2062a8089334c0202
SHA512490d82f478831e5dd2623ec0110501994a730674ee1be39c5c0b90a862d7752ffc77bd203883e61953c728ff1d7fcd6bbe978c4d050aaa18833ffed7e6cfc262
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Filesize
84KB
MD5d76e6075671c8714f85976a1aafdfbc2
SHA157e3dd516e0dd834f06599d5a5b13e2c73d60c9e
SHA256df57675bf074e69246424a3d079826d2f1c94155e2e00da2062a8089334c0202
SHA512490d82f478831e5dd2623ec0110501994a730674ee1be39c5c0b90a862d7752ffc77bd203883e61953c728ff1d7fcd6bbe978c4d050aaa18833ffed7e6cfc262