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Analysis
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max time kernel
154s -
max time network
164s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
20/10/2022, 10:06
Static task
static1
Behavioral task
behavioral1
Sample
a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe
Resource
win7-20220812-en
windows7-x64
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe
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Size
244KB
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MD5
96a30977030425f1ce019abc1c64cfa0
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SHA1
b3142566d362ba4b416c12552cc31c609d20a3d0
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SHA256
a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f
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SHA512
b57029b28fa43d22fc7a1ae92171e9a5a406255f2871246ee4572ca5b93401b69c403e88d924f0c9608d14a1bb679621f7ab24dbd6410ebb562d21d993c81475
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SSDEEP
6144:NUSRXvYPaCFAHloZ7H8++/YfrLCPmmDISxLKA1fNUVvj7r:NEPa4AHloZ7H8++/YfrLJmDISxLKApNC
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" a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" pueisa.exe -
Executes dropped EXE 1 IoCs
pid Process 1372 pueisa.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 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe -
Adds Run key to start application 2 TTPs 14 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /k" pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /d" pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /q" pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /a" pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /y" pueisa.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /m" a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /n" pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /w" pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /r" pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /f" pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /j" pueisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pueisa = "C:\\Users\\Admin\\pueisa.exe /l" pueisa.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 pueisa.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 pueisa.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.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 pueisa.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 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe 1372 pueisa.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 1372 pueisa.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4844 wrote to memory of 1372 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 82 PID 4844 wrote to memory of 1372 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 82 PID 4844 wrote to memory of 1372 4844 a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.exe"C:\Users\Admin\AppData\Local\Temp\a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f.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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4844 -
C:\Users\Admin\pueisa.exe"C:\Users\Admin\pueisa.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
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1372
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
244KB
MD596a30977030425f1ce019abc1c64cfa0
SHA1b3142566d362ba4b416c12552cc31c609d20a3d0
SHA256a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f
SHA512b57029b28fa43d22fc7a1ae92171e9a5a406255f2871246ee4572ca5b93401b69c403e88d924f0c9608d14a1bb679621f7ab24dbd6410ebb562d21d993c81475
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Filesize
244KB
MD596a30977030425f1ce019abc1c64cfa0
SHA1b3142566d362ba4b416c12552cc31c609d20a3d0
SHA256a1eb043b5a3073ee43e9f0ed0b0c953d24c82d07a76c854a9a7725ee0f52865f
SHA512b57029b28fa43d22fc7a1ae92171e9a5a406255f2871246ee4572ca5b93401b69c403e88d924f0c9608d14a1bb679621f7ab24dbd6410ebb562d21d993c81475