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Analysis
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max time kernel
174s -
max time network
189s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
29/11/2022, 16:54
Static task
static1
Behavioral task
behavioral1
Sample
e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe
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Size
108KB
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MD5
91b3c57123c1058b91bc4b93261a3e47
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SHA1
c71d483852dcf3455c19c6bc3cc7d44ccaebadfb
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SHA256
e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a
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SHA512
f151a4111c8fe4bf322132aedea7183c0f8806a342c4e074ad306d6e05488a548c42eaf5602f927889b45fac9d4f98c0aae6de9c878416f24135edde36353f9b
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SSDEEP
1536:shycKiB6oQ7Lh5+sXmNt0ttiPXLq0zTrkB:ArmoIeZt1XTzToB
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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" caohi.exe -
Executes dropped EXE 1 IoCs
pid Process 5012 caohi.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /r" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /i" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /d" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /o" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /z" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /l" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /e" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /p" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /t" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /s" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /m" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /k" caohi.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /a" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /n" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /x" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /h" e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /y" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /g" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /b" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /f" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /h" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /w" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /u" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /v" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /j" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /c" caohi.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caohi = "C:\\Users\\Admin\\caohi.exe /q" caohi.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 3688 e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe 3688 e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe 5012 caohi.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3688 e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe 5012 caohi.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3688 wrote to memory of 5012 3688 e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe 81 PID 3688 wrote to memory of 5012 3688 e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe 81 PID 3688 wrote to memory of 5012 3688 e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.exe"C:\Users\Admin\AppData\Local\Temp\e1aa2a10af23c3a491aec090d2c5791e21590c1cbf707bf8994669ce7688f55a.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:3688 -
C:\Users\Admin\caohi.exe"C:\Users\Admin\caohi.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:5012
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
108KB
MD58bea8a04b4400bf1d6a6b46748e3330c
SHA18a1cbdbece7e5ad5e2e2e48d964d306c93dfe4ee
SHA2566ef387f6e5fbb239fb90290add3057c34d78343e7dea8f1b5d95ab52e3e7abbd
SHA51250e3a43dbc5eb3e5f7d454bf113117e91e2624bdd0e11313f98e9c44c1a4eee0c28e3f24570e5ee98aa3c02a8985c40fe519b6ff218cbb4152d3af5be5377e38
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Filesize
108KB
MD58bea8a04b4400bf1d6a6b46748e3330c
SHA18a1cbdbece7e5ad5e2e2e48d964d306c93dfe4ee
SHA2566ef387f6e5fbb239fb90290add3057c34d78343e7dea8f1b5d95ab52e3e7abbd
SHA51250e3a43dbc5eb3e5f7d454bf113117e91e2624bdd0e11313f98e9c44c1a4eee0c28e3f24570e5ee98aa3c02a8985c40fe519b6ff218cbb4152d3af5be5377e38