Analysis
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max time kernel
135s -
max time network
144s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
02/04/2024, 13:51
Behavioral task
behavioral1
Sample
4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
Resource
win10v2004-20240226-en
General
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Target
4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
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Size
70KB
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MD5
109adf5a32829b151d536e30a81ee96b
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SHA1
dc23006a97e7d5bc34eedec563432e63ed6a226a
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SHA256
4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311
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SHA512
74e7fb13e195dcf6b8ed0f40c034925c3762b2e0c43c8faede99ce79a4b07966ff5336769db3f9f5bb4c0478cefc879d59b43d5ded5bda3e75d19bd0a1e9e9e5
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SSDEEP
1536:QeYZA06UMG73jWw9o5zeS6LQR9bAayaIMbckM6mfOWcNFOfab:QfZxfMGTFXS6LQR9bAaZbfsfOPMab
Malware Config
Extracted
xworm
involved-hurt.gl.at.ply.gg:35238
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Install_directory
%LocalAppData%
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install_file
WindowsHealthSystem.exe
Signatures
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Detect Xworm Payload 4 IoCs
resource yara_rule behavioral1/memory/2068-0-0x0000000001140000-0x0000000001158000-memory.dmp family_xworm behavioral1/files/0x000d00000001224c-61.dat family_xworm behavioral1/memory/1152-63-0x0000000000A80000-0x0000000000A98000-memory.dmp family_xworm behavioral1/memory/1676-67-0x00000000001F0000-0x0000000000208000-memory.dmp family_xworm -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsHealthSystem.lnk 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsHealthSystem.lnk 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Executes dropped EXE 2 IoCs
pid Process 1152 WindowsHealthSystem.exe 1676 WindowsHealthSystem.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsHealthSystem = "C:\\Users\\Admin\\AppData\\Local\\WindowsHealthSystem.exe" 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1556 schtasks.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 1716 powershell.exe 2856 powershell.exe 2536 powershell.exe 2372 powershell.exe 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeDebugPrivilege 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe Token: SeDebugPrivilege 1716 powershell.exe Token: SeDebugPrivilege 2856 powershell.exe Token: SeDebugPrivilege 2536 powershell.exe Token: SeDebugPrivilege 2372 powershell.exe Token: SeDebugPrivilege 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe Token: SeDebugPrivilege 1152 WindowsHealthSystem.exe Token: SeDebugPrivilege 1676 WindowsHealthSystem.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 2068 wrote to memory of 1716 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 28 PID 2068 wrote to memory of 1716 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 28 PID 2068 wrote to memory of 1716 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 28 PID 2068 wrote to memory of 2856 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 30 PID 2068 wrote to memory of 2856 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 30 PID 2068 wrote to memory of 2856 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 30 PID 2068 wrote to memory of 2536 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 32 PID 2068 wrote to memory of 2536 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 32 PID 2068 wrote to memory of 2536 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 32 PID 2068 wrote to memory of 2372 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 34 PID 2068 wrote to memory of 2372 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 34 PID 2068 wrote to memory of 2372 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 34 PID 2068 wrote to memory of 1556 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 36 PID 2068 wrote to memory of 1556 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 36 PID 2068 wrote to memory of 1556 2068 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 36 PID 1388 wrote to memory of 1152 1388 taskeng.exe 41 PID 1388 wrote to memory of 1152 1388 taskeng.exe 41 PID 1388 wrote to memory of 1152 1388 taskeng.exe 41 PID 1388 wrote to memory of 1676 1388 taskeng.exe 42 PID 1388 wrote to memory of 1676 1388 taskeng.exe 42 PID 1388 wrote to memory of 1676 1388 taskeng.exe 42 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe"C:\Users\Admin\AppData\Local\Temp\4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2068 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1716
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2856
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2536
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WindowsHealthSystem.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2372
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WindowsHealthSystem" /tr "C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe"2⤵
- Creates scheduled task(s)
PID:1556
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C:\Windows\system32\taskeng.exetaskeng.exe {B62BAF0A-9A0F-46D0-AD4D-FD28F1E480EC} S-1-5-21-330940541-141609230-1670313778-1000:KXIPPCKF\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1388 -
C:\Users\Admin\AppData\Local\WindowsHealthSystem.exeC:\Users\Admin\AppData\Local\WindowsHealthSystem.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1152
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C:\Users\Admin\AppData\Local\WindowsHealthSystem.exeC:\Users\Admin\AppData\Local\WindowsHealthSystem.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1676
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
70KB
MD5109adf5a32829b151d536e30a81ee96b
SHA1dc23006a97e7d5bc34eedec563432e63ed6a226a
SHA2564b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311
SHA51274e7fb13e195dcf6b8ed0f40c034925c3762b2e0c43c8faede99ce79a4b07966ff5336769db3f9f5bb4c0478cefc879d59b43d5ded5bda3e75d19bd0a1e9e9e5
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize7KB
MD544d44f074e2f11ed44ceb3ada054c8a2
SHA15c9d7e1cd3caad7aa5545634a6cc817b5698c724
SHA256d5d4ae1cc9b2332132fa103cc159df05ab578a197cd2603fc42b72157cf26943
SHA51285b327b530227ec4e8da4f50079520e185e050f7995fbaa53da3aa7e9805baf6ef88a6982842ecfaf10d126f2a757d75a2d252a7bc580eba0a2f94ba49b5df24