Analysis
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max time kernel
138s -
max time network
142s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
02/04/2024, 13:38
Behavioral task
behavioral1
Sample
4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
Resource
win7-20231129-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 5 IoCs
resource yara_rule behavioral1/memory/2352-0-0x0000000000EF0000-0x0000000000F08000-memory.dmp family_xworm behavioral1/memory/2804-60-0x00000000008B0000-0x00000000008C8000-memory.dmp family_xworm behavioral1/files/0x000b00000001447e-59.dat family_xworm behavioral1/memory/2540-66-0x0000000000B20000-0x0000000000B38000-memory.dmp family_xworm behavioral1/memory/980-70-0x0000000001060000-0x0000000001078000-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 3 IoCs
pid Process 2804 WindowsHealthSystem.exe 2540 WindowsHealthSystem.exe 980 WindowsHealthSystem.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\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 3008 schtasks.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2940 powershell.exe 2640 powershell.exe 2856 powershell.exe 2520 powershell.exe 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
description pid Process Token: SeDebugPrivilege 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe Token: SeDebugPrivilege 2940 powershell.exe Token: SeDebugPrivilege 2640 powershell.exe Token: SeDebugPrivilege 2856 powershell.exe Token: SeDebugPrivilege 2520 powershell.exe Token: SeDebugPrivilege 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe Token: SeDebugPrivilege 2804 WindowsHealthSystem.exe Token: SeDebugPrivilege 2540 WindowsHealthSystem.exe Token: SeDebugPrivilege 980 WindowsHealthSystem.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 2352 wrote to memory of 2940 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 28 PID 2352 wrote to memory of 2940 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 28 PID 2352 wrote to memory of 2940 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 28 PID 2352 wrote to memory of 2640 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 30 PID 2352 wrote to memory of 2640 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 30 PID 2352 wrote to memory of 2640 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 30 PID 2352 wrote to memory of 2856 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 32 PID 2352 wrote to memory of 2856 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 32 PID 2352 wrote to memory of 2856 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 32 PID 2352 wrote to memory of 2520 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 34 PID 2352 wrote to memory of 2520 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 34 PID 2352 wrote to memory of 2520 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 34 PID 2352 wrote to memory of 3008 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 36 PID 2352 wrote to memory of 3008 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 36 PID 2352 wrote to memory of 3008 2352 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 36 PID 2332 wrote to memory of 2804 2332 taskeng.exe 39 PID 2332 wrote to memory of 2804 2332 taskeng.exe 39 PID 2332 wrote to memory of 2804 2332 taskeng.exe 39 PID 2332 wrote to memory of 2540 2332 taskeng.exe 42 PID 2332 wrote to memory of 2540 2332 taskeng.exe 42 PID 2332 wrote to memory of 2540 2332 taskeng.exe 42 PID 2332 wrote to memory of 980 2332 taskeng.exe 43 PID 2332 wrote to memory of 980 2332 taskeng.exe 43 PID 2332 wrote to memory of 980 2332 taskeng.exe 43 -
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:2352 -
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:2940
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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:2640
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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: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 -ExclusionProcess 'WindowsHealthSystem.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2520
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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:3008
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C:\Windows\system32\taskeng.exetaskeng.exe {82E304E3-6E3B-4FB0-9CD1-50CFD11869AC} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2332 -
C:\Users\Admin\AppData\Local\WindowsHealthSystem.exeC:\Users\Admin\AppData\Local\WindowsHealthSystem.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2804
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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:2540
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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:980
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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\U7QRF1RFLL6OIBD2IVOQ.temp
Filesize7KB
MD5ebd673b2c8eb1c449496188830a9c80b
SHA12d7ee5397cebf1eb0c579783de9dc224eccb8780
SHA25698d50f1ada2eead852912c165a54036368d6a6ea2a0ffe36cf7d2fb683615289
SHA5128dd93be3628461060826aa0ac2f107fecada86f263ed42387d97e8e70f4e40ebd4e8e45bed577711f3505f3c78592a793d33a1830692e8ee1e655a6ee45db586