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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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 behavioral2/memory/2124-98-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft behavioral2/memory/1512-100-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral2/memory/4772-97-0x0000000000400000-0x0000000000478000-memory.dmp Nirsoft -
NirSoft MailPassView 1 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/2124-98-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 1 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral2/memory/4772-97-0x0000000000400000-0x0000000000478000-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 4444 powershell.exe 60 powershell.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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.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-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 3496 set thread context of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3420 set thread context of 4772 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 103 PID 3420 set thread context of 2124 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 104 PID 3420 set thread context of 1512 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 105 -
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 1980 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
pid Process 4444 powershell.exe 60 powershell.exe 4444 powershell.exe 60 powershell.exe 4772 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 4772 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 1512 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 1512 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 4772 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 4772 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious behavior: MapViewOfSection 3 IoCs
pid Process 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 4444 powershell.exe Token: SeDebugPrivilege 60 powershell.exe Token: SeDebugPrivilege 1512 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe -
Suspicious use of WriteProcessMemory 33 IoCs
description pid Process procid_target PID 3496 wrote to memory of 4444 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 96 PID 3496 wrote to memory of 4444 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 96 PID 3496 wrote to memory of 4444 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 96 PID 3496 wrote to memory of 60 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 98 PID 3496 wrote to memory of 60 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 98 PID 3496 wrote to memory of 60 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 98 PID 3496 wrote to memory of 1980 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 100 PID 3496 wrote to memory of 1980 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 100 PID 3496 wrote to memory of 1980 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 100 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3496 wrote to memory of 3420 3496 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 102 PID 3420 wrote to memory of 4772 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 103 PID 3420 wrote to memory of 4772 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 103 PID 3420 wrote to memory of 4772 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 103 PID 3420 wrote to memory of 4772 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 103 PID 3420 wrote to memory of 2124 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 104 PID 3420 wrote to memory of 2124 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 104 PID 3420 wrote to memory of 2124 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 104 PID 3420 wrote to memory of 2124 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 104 PID 3420 wrote to memory of 1512 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 105 PID 3420 wrote to memory of 1512 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 105 PID 3420 wrote to memory of 1512 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 105 PID 3420 wrote to memory of 1512 3420 b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe 105
Processes
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C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe"C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3496 -
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:4444
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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:60
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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\tmp43CA.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1980
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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:3420 -
C:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exeC:\Users\Admin\AppData\Local\Temp\b4952421150265489acc51c83234643237b1f06e468c450d604210e3ee50316e.exe /stext "C:\Users\Admin\AppData\Local\Temp\pldrfvvqmuyvnzudxfnevhztqh"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4772
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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\znjjxffjicqipfipgqifymtcrngdo"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
PID:2124
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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\jhwcyyylwkinaletpavzjzotacqmhpvi"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1512
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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
MD56681bca530f2704b5aa325741fe45908
SHA10106a378eedf6d78c05f2dcef180b106534b66db
SHA256ff392f9cb27452c651a0d81e4b66a68e5ac219ac472253cf960dc157783b1aa0
SHA512fca8bd3b41c2bbb0a468f3f980ac2edbad692193d5b9aa60da79afc98786f774132b21b725db5e41496a1915163342afd9a3a3b4afd46e577dcf313998a1474c
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD5909bcdf69f6f61d1c952c804e6ffb0b9
SHA14689303dec598cad13a4f5f0f937f58b65c73886
SHA25650f97dc64c0825b8bcf492b4e7f947eea9aae3c0515ee9a86ae8f43f7df1818b
SHA512be4cd285b10f015712e2cb699e219296d50d4c63fbfea2c88a1db48eb0d94453c3ab7274366e399120bc3227036a9f6cb58ac46d1b8b206144bd7ae077a23e62
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
4KB
MD516f4f7c4051f4bbdaa93a1ca80690065
SHA1750cacbdd2d089a88119374560d6ac004954e90e
SHA2566c4559e4413cccaeab73cad48ffd804506c95566e4d6a3f5ae64017a33ea6ec2
SHA512cb0f68d393ad03a5c802a2978ff7b12e20911bac5e27200c2df16d5d3f63dfc2387c0cd1a9075d8e4ba9ae804a6b61225575e2f42b3ef024e863d5b172417964
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Filesize
1KB
MD54f4dba2f04e932443db7b4c227a8da53
SHA1568d96df04b4203f7c6acbed7f3028dc427059eb
SHA256ce05e9c56ef1f06a4c89e260cf792eb259f9ee2f8cd677c3dbf4f6a75290f40f
SHA5127c5d1f841e8ce284933d51e45e1f18bff3bdfc11cdc567ec9e0297f6bb10bfc502bc101425276d3361cc820223e04740e41ef1277dd8e32f1bc9726dbcd0bdad