Analysis
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max time kernel
112s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
03-10-2024 19:03
Static task
static1
Behavioral task
behavioral1
Sample
2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Resource
win10v2004-20240802-en
General
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Target
2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
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Size
815KB
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MD5
e4274e5648b5755fc555bbdf9bf98c30
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SHA1
9be5c993af77a64619f590a3440f55eeacd70e1e
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SHA256
2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1
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SHA512
4bc460372869c7e3ffd34ffdb39f75943e3ecaeebbe21d7f052dd6eb05c287898dc70de0f3de5b97e80c475d8bde6c2b0bd5b4fb80c5dc9694545819c74c7823
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SSDEEP
24576:jcI0vlQ+D2dKw5LvuozLNXmNnZfvxOrEH7U:wI0i4wtvuodmNnlU
Malware Config
Extracted
djvu
http://habrafa.com/test2/get.php
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extension
.cdtt
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offline_id
Bn3q97hwLouKbhkQRNO4SeV07gjdEQVm8NKhg0t1
- payload_url
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ransomnote
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Signatures
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Detected Djvu ransomware 18 IoCs
resource yara_rule behavioral2/memory/3492-8-0x00000000029B0000-0x0000000002ACB000-memory.dmp family_djvu behavioral2/memory/2880-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2880-10-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2880-11-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2880-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2880-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-45-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-44-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-60-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-59-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-58-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-65-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-74-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-76-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-77-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-82-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3476-84-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Detects Floxif payload 1 IoCs
resource yara_rule behavioral2/files/0x00090000000233d1-1.dat floxif -
Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
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ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral2/files/0x00090000000233d1-1.dat acprotect -
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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe -
Loads dropped DLL 6 IoCs
pid Process 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 2952 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e3c21b9f-23f5-4e96-b402-9e313f739d57\\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe\" --AutoStart" 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe -
Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\e: 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe File opened (read-only) \??\e: 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 api.2ip.ua 5 api.2ip.ua 16 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3492 set thread context of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 1356 set thread context of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 -
resource yara_rule behavioral2/files/0x00090000000233d1-1.dat upx behavioral2/memory/3492-4-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/2880-16-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/3492-15-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/1356-38-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/2880-34-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/1356-48-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/3476-50-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/3476-64-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/3476-67-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/3476-73-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/3476-83-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/3476-97-0x0000000010000000-0x0000000010030000-memory.dmp upx -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files\Common Files\System\symsrv.dll 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe File created \??\c:\progra~1\common~1\system\symsrv.dll.000 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe -
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 5 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 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
pid Process 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe Token: SeDebugPrivilege 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe Token: SeDebugPrivilege 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe Token: SeDebugPrivilege 3476 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 3492 wrote to memory of 2880 3492 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 82 PID 2880 wrote to memory of 2952 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 83 PID 2880 wrote to memory of 2952 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 83 PID 2880 wrote to memory of 2952 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 83 PID 2880 wrote to memory of 1356 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 84 PID 2880 wrote to memory of 1356 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 84 PID 2880 wrote to memory of 1356 2880 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 84 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86 PID 1356 wrote to memory of 3476 1356 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe"C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3492 -
C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe"C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe"2⤵
- Checks computer location settings
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2880 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\e3c21b9f-23f5-4e96-b402-9e313f739d57" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2952
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C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe"C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1356 -
C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe"C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3476
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1AppInit DLLs
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1AppInit DLLs
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
175B
MD51130c911bf5db4b8f7cf9b6f4b457623
SHA148e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA51294e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab
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Filesize
1KB
MD57fb5fa1534dcf77f2125b2403b30a0ee
SHA1365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA25633a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
SHA512a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD530535d8d5d9d748eee24c168748b99e7
SHA1542c5c769b2bfc1d6f58cd0e114cd3927ad04a89
SHA2569581ee3690bb1cba7f83724412e7308feab31a5b60c607d07acd97880cf191a3
SHA5127f99db0f0100d3d52a0875e1d894fe071405f1d120690bfc45d0cccbe78bfd71f377cbc07a0abcaf9ceacc11a0e720857b4da850cd4ad7f47d49d79700ed8c1b
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD58d2fd60b6fc99fcecb31627cb8949ede
SHA136f449008f91e062e536587660421b6af125c21d
SHA256aba4eced0e5bb9b862dc20f14fe0a423f35fe19ff28e93d4ebf0ec6d1fe9fd78
SHA512cb3305ec83f30d9ab74a650871dd44dcb0687ce19eabdd7f2c459616b7831ae47ca020f81913da94fece76784b0afdaecc16a8cb9a250b7a8a3e12d15e7cc31e
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C:\Users\Admin\AppData\Local\e3c21b9f-23f5-4e96-b402-9e313f739d57\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Filesize815KB
MD5e4274e5648b5755fc555bbdf9bf98c30
SHA19be5c993af77a64619f590a3440f55eeacd70e1e
SHA2562001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1
SHA5124bc460372869c7e3ffd34ffdb39f75943e3ecaeebbe21d7f052dd6eb05c287898dc70de0f3de5b97e80c475d8bde6c2b0bd5b4fb80c5dc9694545819c74c7823