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Analysis
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max time kernel
148s -
max time network
130s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
04/09/2024, 14:54
Static task
static1
Behavioral task
behavioral1
Sample
b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe
Resource
win10v2004-20240802-en
General
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Target
b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe
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Size
991KB
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MD5
4839930b3f7915602fd40251b76bb9c5
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SHA1
fe3a9de406d44c6a9aa5a6ad1fede58f6a0e413f
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SHA256
b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e
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SHA512
54b4b3ba92406fb1417eda6366cc4806f10dfae1233cb009c697a8b95f990bd497a7e50140f48406566e16dedf0a62a0f71f25d862d1113a92d6277cacf5016f
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SSDEEP
12288:vdZshZWHXnhEE8tpUEx1I94L+R49xIUBZjlP4JH0Y6QC4zmEs0mwF0WOs5HvrWZO:vzshZEXw7jIS6RuXGUDQFDMEKW4THM00
Malware Config
Extracted
remcos
Aug 23C
method8888.ddns.net:6902
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-RCNGU6
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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Detected Nirsoft tools 3 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
resource yara_rule behavioral1/memory/2372-60-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft behavioral1/memory/1144-63-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral1/memory/1812-62-0x0000000000400000-0x0000000000478000-memory.dmp Nirsoft -
NirSoft MailPassView 1 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral1/memory/2372-60-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 1 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral1/memory/1812-62-0x0000000000400000-0x0000000000478000-memory.dmp WebBrowserPassView -
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2892 powershell.exe 2828 powershell.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 2516 set thread context of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 1796 set thread context of 1812 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 38 PID 1796 set thread context of 2372 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 40 PID 1796 set thread context of 1144 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 41 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2812 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2892 powershell.exe 2828 powershell.exe 1812 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 1812 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious behavior: MapViewOfSection 4 IoCs
pid Process 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2892 powershell.exe Token: SeDebugPrivilege 2828 powershell.exe Token: SeDebugPrivilege 1144 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious use of WriteProcessMemory 44 IoCs
description pid Process procid_target PID 2516 wrote to memory of 2892 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 31 PID 2516 wrote to memory of 2892 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 31 PID 2516 wrote to memory of 2892 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 31 PID 2516 wrote to memory of 2892 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 31 PID 2516 wrote to memory of 2828 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 33 PID 2516 wrote to memory of 2828 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 33 PID 2516 wrote to memory of 2828 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 33 PID 2516 wrote to memory of 2828 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 33 PID 2516 wrote to memory of 2812 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 34 PID 2516 wrote to memory of 2812 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 34 PID 2516 wrote to memory of 2812 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 34 PID 2516 wrote to memory of 2812 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 34 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 2516 wrote to memory of 1796 2516 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 37 PID 1796 wrote to memory of 1812 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 38 PID 1796 wrote to memory of 1812 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 38 PID 1796 wrote to memory of 1812 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 38 PID 1796 wrote to memory of 1812 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 38 PID 1796 wrote to memory of 1812 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 38 PID 1796 wrote to memory of 1728 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 39 PID 1796 wrote to memory of 1728 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 39 PID 1796 wrote to memory of 1728 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 39 PID 1796 wrote to memory of 1728 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 39 PID 1796 wrote to memory of 2372 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 40 PID 1796 wrote to memory of 2372 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 40 PID 1796 wrote to memory of 2372 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 40 PID 1796 wrote to memory of 2372 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 40 PID 1796 wrote to memory of 2372 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 40 PID 1796 wrote to memory of 1144 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 41 PID 1796 wrote to memory of 1144 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 41 PID 1796 wrote to memory of 1144 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 41 PID 1796 wrote to memory of 1144 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 41 PID 1796 wrote to memory of 1144 1796 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 41
Processes
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C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe"C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2892
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TkhOsslQS.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2828
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TkhOsslQS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp365C.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2812
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C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe"C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe"2⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1796 -
C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exeC:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe /stext "C:\Users\Admin\AppData\Local\Temp\hsmmnwqjgv"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1812
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C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exeC:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe /stext "C:\Users\Admin\AppData\Local\Temp\rmsenpbkuegozv"3⤵PID:1728
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C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exeC:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe /stext "C:\Users\Admin\AppData\Local\Temp\rmsenpbkuegozv"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
PID:2372
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C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exeC:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe /stext "C:\Users\Admin\AppData\Local\Temp\coxpghmeimytjbxrz"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1144
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
144B
MD5cd477b7af93f839bc22b2717aaf721ff
SHA1c38d3142db4322f5bfc8778b0eba8d21c1f56eb7
SHA256e3eebdcb9b548b5b38e74927df5acd458f01a61d4daa96a31ba24a35d9140560
SHA512138aca623ea324d6e36593dff9b72f205989b5be3e3e4c3bb3759653692cc484e84f2323adcfbf603ef25ddee5100fcf14a8f1c3b34120610538df6967da9e19
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Filesize
2B
MD5f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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Filesize
1KB
MD5cb34ad31404fb39f12b5ef6710db8609
SHA11a856ecd475da91736f28985bc114972e3f288c4
SHA256796772e66e8e0c025c123e1ce39f8de41b56bd492143d4a5855011df8c557aa2
SHA51262e353938c81abf575e4f7f1cf85d2b4c424f8bc79ad82ef8ed258e4c1dd72710f23c89773d2e0da4d82adec05442641604584c7fd91a4be970f67b3c98aaca5
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD5ec6f486cca964e9b1c13977d74103594
SHA1097b4b627ca6097c4921f4f1e683e039b5ad90b2
SHA256462c691b6846ab09e99293a82dce2f2695464e5dfb141f2fd50915e3dcc68e76
SHA512dff1db533bf9814607662f277b169cccec7bf467fb14633a87e41b6e3c99888003407186da8d5aad3bb2dfabf0ad49a96ab0dae6b9cbf7a91ca16e378a7da50b