Analysis
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max time kernel
121s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
18/06/2024, 16:34
Static task
static1
Behavioral task
behavioral1
Sample
3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe
Resource
win10v2004-20240508-en
General
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Target
3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe
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Size
702KB
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MD5
47ef84920598e68e97ad8b54a1ee0b3f
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SHA1
b7aeccf0a7e118dd7bb822dd353129e8324e76a5
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SHA256
3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8
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SHA512
8acf513af3064cbc6e87d28651b88bd5959068983a585853f6bc678793b0dc930bbfd8ac3ed1c908f3d78e7bea6135400d911a0e14e17434f594e50e680b375a
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SSDEEP
12288:+NffGiSE400a6/ctd8jCg1wy3c2UlyF/nZ9aQ5GxFF4E69zWRx:+FepEGWg1yPkF/nZ9HoE9w
Malware Config
Extracted
djvu
http://cajgtus.com/raud/get.php
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extension
.baaa
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offline_id
BmydHWxftXsUWlPOfJ63XT7FvAyu6D9OzaEHjdt1
- 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/2068-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2992-5-0x00000000043C0000-0x00000000044DB000-memory.dmp family_djvu behavioral1/memory/2068-7-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2068-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2068-12-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2892-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2892-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1628-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1628-40-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-50-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2536-474-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Renames multiple (208) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 4 IoCs
pid Process 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 2892 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 1628 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 2804 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ce81b7da-a7d5-4036-9c63-18727144e8b3\\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe\" --AutoStart" 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.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 7 api.2ip.ua 9 api.2ip.ua 12 api.2ip.ua 3 api.2ip.ua -
Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 2992 set thread context of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2784 set thread context of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2852 set thread context of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2604 set thread context of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 2068 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 2536 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 2536 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 2892 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 2892 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 1628 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 1628 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 2536 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe -
Suspicious use of WriteProcessMemory 60 IoCs
description pid Process procid_target PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2992 wrote to memory of 2068 2992 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 28 PID 2068 wrote to memory of 2804 2068 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 30 PID 2068 wrote to memory of 2804 2068 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 30 PID 2068 wrote to memory of 2804 2068 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 30 PID 2068 wrote to memory of 2804 2068 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 30 PID 2068 wrote to memory of 2784 2068 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 31 PID 2068 wrote to memory of 2784 2068 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 31 PID 2068 wrote to memory of 2784 2068 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 31 PID 2068 wrote to memory of 2784 2068 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 31 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 2784 wrote to memory of 2536 2784 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 32 PID 1944 wrote to memory of 2852 1944 taskeng.exe 35 PID 1944 wrote to memory of 2852 1944 taskeng.exe 35 PID 1944 wrote to memory of 2852 1944 taskeng.exe 35 PID 1944 wrote to memory of 2852 1944 taskeng.exe 35 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 2852 wrote to memory of 2892 2852 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 36 PID 1944 wrote to memory of 2604 1944 taskeng.exe 38 PID 1944 wrote to memory of 2604 1944 taskeng.exe 38 PID 1944 wrote to memory of 2604 1944 taskeng.exe 38 PID 1944 wrote to memory of 2604 1944 taskeng.exe 38 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39 PID 2604 wrote to memory of 1628 2604 3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe 39
Processes
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C:\Users\Admin\AppData\Local\Temp\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe"C:\Users\Admin\AppData\Local\Temp\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2992 -
C:\Users\Admin\AppData\Local\Temp\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe"C:\Users\Admin\AppData\Local\Temp\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2068 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2804
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C:\Users\Admin\AppData\Local\Temp\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe"C:\Users\Admin\AppData\Local\Temp\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2784 -
C:\Users\Admin\AppData\Local\Temp\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe"C:\Users\Admin\AppData\Local\Temp\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2536
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C:\Windows\system32\taskeng.exetaskeng.exe {196423A3-73FB-4862-9CE0-B20B88D71441} S-1-5-21-268080393-3149932598-1824759070-1000:UHRQKJCP\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1944 -
C:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exeC:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe --Task2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2852 -
C:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exeC:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe --Task3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2892
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C:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exeC:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe --Task2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2604 -
C:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exeC:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe --Task3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1628
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\ce81b7da-a7d5-4036-9c63-18727144e8b3\3d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8.exe
Filesize702KB
MD547ef84920598e68e97ad8b54a1ee0b3f
SHA1b7aeccf0a7e118dd7bb822dd353129e8324e76a5
SHA2563d557b2b7692818e771d9f0dff1eeab3a5d309b5b627e913e88cbc1d2318d0a8
SHA5128acf513af3064cbc6e87d28651b88bd5959068983a585853f6bc678793b0dc930bbfd8ac3ed1c908f3d78e7bea6135400d911a0e14e17434f594e50e680b375a