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Analysis
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max time kernel
59s -
max time network
48s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
02/09/2024, 17:02
Static task
static1
Behavioral task
behavioral1
Sample
66d5df681876c_file010924.exe
Resource
win10v2004-20240802-en
windows10-2004-x64
General
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Target
66d5df681876c_file010924.exe
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Size
812KB
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MD5
7972b08246e568495d9d116fc2d0b159
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SHA1
3e12225494f08369858453fd9fc7481b4f788165
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SHA256
2a6c90c8db27e6ac04c7e339dfe4b3c2d47a292bcf6fc1c5b4e0ae62fc81ff84
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SHA512
f0ead246f31d1badb3cd5fd67cb5b3081f027fdad44dd50364734d61722f1bc2cacb1ad5d842ca3f7000a2699e7bdf059a508b54a95f5e155ae274d70e833ff7
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SSDEEP
24576:60oeRhL4Zihw/WaRupypku1ADMH0h0kT:60J482RuRuQMm
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.watz
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offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
- payload_url
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ransomnote
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Signatures
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Detected Djvu ransomware 19 IoCs
resource yara_rule behavioral1/memory/1992-2-0x00000000024B0000-0x00000000025CB000-memory.dmp family_djvu behavioral1/memory/2880-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2880-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2880-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2880-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2880-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-40-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/516-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3808-60-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3808-61-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation 66d5df681876c_file010924.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4960 icacls.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\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\fedd7e38-48c6-4ab8-bd3d-a2c35c1bd3ca\\66d5df681876c_file010924.exe\" --AutoStart" 66d5df681876c_file010924.exe -
Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 16 api.2ip.ua 17 api.2ip.ua 23 api.2ip.ua 48 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1992 set thread context of 2880 1992 66d5df681876c_file010924.exe 87 PID 3824 set thread context of 516 3824 66d5df681876c_file010924.exe 96 PID 4160 set thread context of 3808 4160 66d5df681876c_file010924.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 7 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 66d5df681876c_file010924.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 66d5df681876c_file010924.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 66d5df681876c_file010924.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 66d5df681876c_file010924.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 66d5df681876c_file010924.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 66d5df681876c_file010924.exe -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000_Classes\Local Settings taskmgr.exe -
Suspicious behavior: EnumeratesProcesses 60 IoCs
pid Process 2880 66d5df681876c_file010924.exe 2880 66d5df681876c_file010924.exe 516 66d5df681876c_file010924.exe 516 66d5df681876c_file010924.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 3808 66d5df681876c_file010924.exe 3808 66d5df681876c_file010924.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1484 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1484 taskmgr.exe Token: SeSystemProfilePrivilege 1484 taskmgr.exe Token: SeCreateGlobalPrivilege 1484 taskmgr.exe -
Suspicious use of FindShellTrayWindow 59 IoCs
pid Process 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe -
Suspicious use of SendNotifyMessage 59 IoCs
pid Process 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe 1484 taskmgr.exe -
Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 1992 wrote to memory of 2880 1992 66d5df681876c_file010924.exe 87 PID 2880 wrote to memory of 4960 2880 66d5df681876c_file010924.exe 91 PID 2880 wrote to memory of 4960 2880 66d5df681876c_file010924.exe 91 PID 2880 wrote to memory of 4960 2880 66d5df681876c_file010924.exe 91 PID 2880 wrote to memory of 3824 2880 66d5df681876c_file010924.exe 92 PID 2880 wrote to memory of 3824 2880 66d5df681876c_file010924.exe 92 PID 2880 wrote to memory of 3824 2880 66d5df681876c_file010924.exe 92 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 3824 wrote to memory of 516 3824 66d5df681876c_file010924.exe 96 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105 PID 4160 wrote to memory of 3808 4160 66d5df681876c_file010924.exe 105
Processes
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C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1992 -
C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2880 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\fedd7e38-48c6-4ab8-bd3d-a2c35c1bd3ca" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:4960
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C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3824 -
C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:516
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1484
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:208
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C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4160 -
C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:3808
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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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
MD50f26add1d3377c7496a3ecebe543d2ab
SHA1c58269aec800d04eb26363e3f9d5f9bd9df45bf2
SHA256705ea15f544b431149b346146c2dee22311e915b4918ee927ed26a0b9fd177ba
SHA512104e2e926ae7e5144d99de28ca69a080da0b4c0f0304939c9b8c7ca04c7555d718e8272baa88ae9db25e653428f33fa50a93472a04ef6f1c9b1551dbd6b0d4f6
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5a5b6fecf46baec7fdf655b7aea0c2faa
SHA135cbee6433e30bdf0fbf0b13238c5ac3808a06cd
SHA2561ff167eaf773fb150acf3bd21c32ce07aeb3cacc83b7138b9a4fb5492804622d
SHA5123106755e6c48dc14a65749aa7ac2f97c8ac54840d8247b830fd850f20a9833b8c022d56329d7f8b9801c6f6fe83c383fe075f2ae24caf969a3c345261167ddfd
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Filesize
812KB
MD57972b08246e568495d9d116fc2d0b159
SHA13e12225494f08369858453fd9fc7481b4f788165
SHA2562a6c90c8db27e6ac04c7e339dfe4b3c2d47a292bcf6fc1c5b4e0ae62fc81ff84
SHA512f0ead246f31d1badb3cd5fd67cb5b3081f027fdad44dd50364734d61722f1bc2cacb1ad5d842ca3f7000a2699e7bdf059a508b54a95f5e155ae274d70e833ff7