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Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
01/12/2022, 23:56
Static task
static1
Behavioral task
behavioral1
Sample
0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe
Resource
win7-20220812-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
11 signatures
150 seconds
General
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Target
0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe
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Size
146KB
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MD5
3939eb280dba0e7f449c4f8fa081ceb0
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SHA1
b835baa3e2c60fd4306ed4aaf8c44c80a9c2b942
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SHA256
0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0
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SHA512
e444cc812b5600564fd91084a1f30002b72d5557d5a2d3fa5acaccff87edecde0b3b2d66db81d8730109ced5836cf41bd7ec1b0d50d212cad85edc537329711b
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SSDEEP
3072:MlYmmHxvACCUFQ5vspm5bfiRy5zjLbndN:8Ymypy95kpnR8zf3
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" 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" guocu.exe -
Executes dropped EXE 2 IoCs
pid Process 3352 guocu.exe 1856 guocu.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 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.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\guocu = "C:\\Users\\Admin\\guocu.exe /s" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /t" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /u" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /f" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /n" 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /k" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /i" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /y" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /r" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /n" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /p" guocu.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /g" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /d" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /c" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /x" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /o" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /a" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /m" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /v" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /l" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /e" guocu.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /b" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /j" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /w" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /z" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /q" guocu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guocu = "C:\\Users\\Admin\\guocu.exe /h" guocu.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 value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum guocu.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 guocu.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe -
Drops autorun.inf file 1 TTPs 1 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File opened for modification C:\Users\Admin\c\autorun.inf guocu.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 5004 set thread context of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 3352 set thread context of 1856 3352 guocu.exe 84 -
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 620 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 620 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe 1856 guocu.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 620 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 3352 guocu.exe 1856 guocu.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 5004 wrote to memory of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 5004 wrote to memory of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 5004 wrote to memory of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 5004 wrote to memory of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 5004 wrote to memory of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 5004 wrote to memory of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 5004 wrote to memory of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 5004 wrote to memory of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 5004 wrote to memory of 620 5004 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 81 PID 620 wrote to memory of 3352 620 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 83 PID 620 wrote to memory of 3352 620 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 83 PID 620 wrote to memory of 3352 620 0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe 83 PID 3352 wrote to memory of 1856 3352 guocu.exe 84 PID 3352 wrote to memory of 1856 3352 guocu.exe 84 PID 3352 wrote to memory of 1856 3352 guocu.exe 84 PID 3352 wrote to memory of 1856 3352 guocu.exe 84 PID 3352 wrote to memory of 1856 3352 guocu.exe 84 PID 3352 wrote to memory of 1856 3352 guocu.exe 84 PID 3352 wrote to memory of 1856 3352 guocu.exe 84 PID 3352 wrote to memory of 1856 3352 guocu.exe 84 PID 3352 wrote to memory of 1856 3352 guocu.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe"C:\Users\Admin\AppData\Local\Temp\0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5004 -
C:\Users\Admin\AppData\Local\Temp\0c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0.exe742⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:620 -
C:\Users\Admin\guocu.exe"C:\Users\Admin\guocu.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3352 -
C:\Users\Admin\guocu.exe744⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1856
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
146KB
MD53939eb280dba0e7f449c4f8fa081ceb0
SHA1b835baa3e2c60fd4306ed4aaf8c44c80a9c2b942
SHA2560c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0
SHA512e444cc812b5600564fd91084a1f30002b72d5557d5a2d3fa5acaccff87edecde0b3b2d66db81d8730109ced5836cf41bd7ec1b0d50d212cad85edc537329711b
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Filesize
146KB
MD53939eb280dba0e7f449c4f8fa081ceb0
SHA1b835baa3e2c60fd4306ed4aaf8c44c80a9c2b942
SHA2560c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0
SHA512e444cc812b5600564fd91084a1f30002b72d5557d5a2d3fa5acaccff87edecde0b3b2d66db81d8730109ced5836cf41bd7ec1b0d50d212cad85edc537329711b
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Filesize
146KB
MD53939eb280dba0e7f449c4f8fa081ceb0
SHA1b835baa3e2c60fd4306ed4aaf8c44c80a9c2b942
SHA2560c926bcae9b079b3bf972b35b2f05a6298917354a625ab6e30736c435bc089e0
SHA512e444cc812b5600564fd91084a1f30002b72d5557d5a2d3fa5acaccff87edecde0b3b2d66db81d8730109ced5836cf41bd7ec1b0d50d212cad85edc537329711b