Analysis
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max time kernel
145s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
02/04/2024, 13:14
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/1884-0-0x0000000000EB0000-0x0000000000EC8000-memory.dmp family_xworm behavioral1/files/0x000f0000000122fa-58.dat family_xworm behavioral1/memory/2344-60-0x0000000001290000-0x00000000012A8000-memory.dmp family_xworm behavioral1/memory/1436-67-0x00000000003E0000-0x00000000003F8000-memory.dmp family_xworm behavioral1/memory/2044-71-0x0000000000160000-0x0000000000178000-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 2344 WindowsHealthSystem.exe 1436 WindowsHealthSystem.exe 2044 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 2188 schtasks.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2740 powershell.exe 2608 powershell.exe 2760 powershell.exe 2472 powershell.exe 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
description pid Process Token: SeDebugPrivilege 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe Token: SeDebugPrivilege 2740 powershell.exe Token: SeDebugPrivilege 2608 powershell.exe Token: SeDebugPrivilege 2760 powershell.exe Token: SeDebugPrivilege 2472 powershell.exe Token: SeDebugPrivilege 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe Token: SeDebugPrivilege 2344 WindowsHealthSystem.exe Token: SeDebugPrivilege 1436 WindowsHealthSystem.exe Token: SeDebugPrivilege 2044 WindowsHealthSystem.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 1884 wrote to memory of 2740 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 28 PID 1884 wrote to memory of 2740 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 28 PID 1884 wrote to memory of 2740 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 28 PID 1884 wrote to memory of 2608 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 30 PID 1884 wrote to memory of 2608 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 30 PID 1884 wrote to memory of 2608 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 30 PID 1884 wrote to memory of 2760 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 32 PID 1884 wrote to memory of 2760 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 32 PID 1884 wrote to memory of 2760 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 32 PID 1884 wrote to memory of 2472 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 34 PID 1884 wrote to memory of 2472 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 34 PID 1884 wrote to memory of 2472 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 34 PID 1884 wrote to memory of 2188 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 36 PID 1884 wrote to memory of 2188 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 36 PID 1884 wrote to memory of 2188 1884 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe 36 PID 1072 wrote to memory of 2344 1072 taskeng.exe 39 PID 1072 wrote to memory of 2344 1072 taskeng.exe 39 PID 1072 wrote to memory of 2344 1072 taskeng.exe 39 PID 1072 wrote to memory of 1436 1072 taskeng.exe 42 PID 1072 wrote to memory of 1436 1072 taskeng.exe 42 PID 1072 wrote to memory of 1436 1072 taskeng.exe 42 PID 1072 wrote to memory of 2044 1072 taskeng.exe 43 PID 1072 wrote to memory of 2044 1072 taskeng.exe 43 PID 1072 wrote to memory of 2044 1072 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:1884 -
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:2740
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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:2608
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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:2760
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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:2472
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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:2188
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C:\Windows\system32\taskeng.exetaskeng.exe {7F6BAC4B-B648-4C24-BD18-CF6D0D0D4918} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1072 -
C:\Users\Admin\AppData\Local\WindowsHealthSystem.exeC:\Users\Admin\AppData\Local\WindowsHealthSystem.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2344
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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:1436
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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:2044
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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\80HESYX3C5UP1X6KZ6SO.temp
Filesize7KB
MD59f51162bf0d832581dab77ccb76a482f
SHA14f7a952c3e46e5998bab2bf53ec431b2e80a5af4
SHA256c7a32331444d946002c74952f14ff2251784f5ed345d9f96c779ba8af626eb4b
SHA512cad0fa96e29ebd75c6c6378f89c46053add2539b6c318571b65b03c023090d0b39062e457814b3f4f7c161485247888750e4e6a4b8badc3a8f85c455aaf7a980