Analysis
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max time kernel
34s -
max time network
62s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
30/06/2024, 13:59
Behavioral task
behavioral1
Sample
gu.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
gu.exe
Resource
win10v2004-20240508-en
Errors
General
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Target
gu.exe
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Size
37KB
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MD5
5623a039c27a4c274b375c83e42651d4
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SHA1
877caa65809f345247c37d0bf64a49b1abda1e60
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SHA256
87d0845412d5ad22a56954c151f0ae21cba71d2284189fdb0d3c6cb93b6282eb
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SHA512
3f896c083919d310b4715d267dfccf57e10c8ba67a33f4feb1a6839cb97b922868339b9f448a5ad4360229837c030a03465337ec1aaba7d4fca64b8a31c00fd2
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SSDEEP
768:/y0yQEkNVfCNWtkriwFYbMLrM+rMRa8NuOyt:hVqNWimwy4U+gRJNx
Malware Config
Extracted
njrat
im523
gu
127.0.0.1:2323
b7f2f50a5eff21f2499c81ed48fee825
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reg_key
b7f2f50a5eff21f2499c81ed48fee825
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2892 netsh.exe -
Executes dropped EXE 1 IoCs
pid Process 1300 server.exe -
Loads dropped DLL 1 IoCs
pid Process 1916 gu.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh netsh.exe -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer chrome.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS chrome.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName chrome.exe -
Suspicious behavior: EnumeratesProcesses 17 IoCs
pid Process 2664 chrome.exe 2664 chrome.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe 1300 server.exe -
Suspicious use of AdjustPrivilegeToken 21 IoCs
description pid Process Token: SeDebugPrivilege 1300 server.exe Token: 33 1300 server.exe Token: SeIncBasePriorityPrivilege 1300 server.exe Token: 33 1300 server.exe Token: SeIncBasePriorityPrivilege 1300 server.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: 33 1300 server.exe Token: SeIncBasePriorityPrivilege 1300 server.exe Token: SeShutdownPrivilege 2664 chrome.exe Token: SeShutdownPrivilege 2664 chrome.exe -
Suspicious use of FindShellTrayWindow 34 IoCs
pid Process 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe -
Suspicious use of SendNotifyMessage 32 IoCs
pid Process 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe 2664 chrome.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1916 wrote to memory of 1300 1916 gu.exe 28 PID 1916 wrote to memory of 1300 1916 gu.exe 28 PID 1916 wrote to memory of 1300 1916 gu.exe 28 PID 1916 wrote to memory of 1300 1916 gu.exe 28 PID 1300 wrote to memory of 2892 1300 server.exe 29 PID 1300 wrote to memory of 2892 1300 server.exe 29 PID 1300 wrote to memory of 2892 1300 server.exe 29 PID 1300 wrote to memory of 2892 1300 server.exe 29 PID 2664 wrote to memory of 2728 2664 chrome.exe 32 PID 2664 wrote to memory of 2728 2664 chrome.exe 32 PID 2664 wrote to memory of 2728 2664 chrome.exe 32 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 296 2664 chrome.exe 34 PID 2664 wrote to memory of 2600 2664 chrome.exe 35 PID 2664 wrote to memory of 2600 2664 chrome.exe 35 PID 2664 wrote to memory of 2600 2664 chrome.exe 35 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36 PID 2664 wrote to memory of 2828 2664 chrome.exe 36
Processes
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C:\Users\Admin\AppData\Local\Temp\gu.exe"C:\Users\Admin\AppData\Local\Temp\gu.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1916 -
C:\Users\Admin\AppData\Local\Temp\server.exe"C:\Users\Admin\AppData\Local\Temp\server.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1300 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
PID:2892
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2664 -
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef7489758,0x7fef7489768,0x7fef74897782⤵PID:2728
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1140 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:22⤵PID:296
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1472 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:82⤵PID:2600
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1588 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:82⤵PID:2828
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2308 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:12⤵PID:2392
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2320 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:12⤵PID:1632
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1548 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:22⤵PID:568
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1344 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:12⤵PID:1884
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3296 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:82⤵PID:1336
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --mojo-platform-channel-handle=3324 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:12⤵PID:2008
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --mojo-platform-channel-handle=3040 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:12⤵PID:1304
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --mojo-platform-channel-handle=2612 --field-trial-handle=1208,i,3123486931391590680,8125418711247151900,131072 /prefetch:12⤵PID:1744
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C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"1⤵PID:2300
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x01⤵PID:1052
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x11⤵PID:1728
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
140KB
MD598c1096f31b86c53eba9ef008c02175a
SHA104b4c859c557408aebfcdec86d03978a7147370c
SHA25667a310d9ab7f28753a813b63e5d53370b7b4f96bfacbcebbfc9bd6487c38973a
SHA5129a72e992f9e13bbe4fe6fd9d9c1068e48db984ff85b13bff8b9a6e0289f94f4785d3c59888d5978b5df8554f45731186504f98fb1b342bed2348ea8b0619f940
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Filesize
264KB
MD5f50f89a0a91564d0b8a211f8921aa7de
SHA1112403a17dd69d5b9018b8cede023cb3b54eab7d
SHA256b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
SHA512bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58
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Filesize
5KB
MD5747bdec1675ba47f8e1d959b3e9877be
SHA181a4881e455d46cb57eb8361f4240739d7e35a16
SHA2562552ce5e16696ebddce54978a3d329d61415c697e59a9124f73ddf5c183056b7
SHA5128ee1d68b2dad4382c364fd6b6c8c7a2fd0c1367604d795223b1b16b07b7241ecef1bca2754312ea131fc684d28f3f8238bd4f338bde7d8309096aa8d163e3529
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C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\000007.dbtmp
Filesize16B
MD518e723571b00fb1694a3bad6c78e4054
SHA1afcc0ef32d46fe59e0483f9a3c891d3034d12f32
SHA2568af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa
SHA51243bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2
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Filesize
140KB
MD5ec6fffcce86aa6ffd6ceb9670efbd9dc
SHA113abc6ba1b560480f154bbc2a82d5cd13ea9ee31
SHA25600e1634c3ef113afacbb7ddad46646ea452c39ddc49fd549d95a3bddfd814fd1
SHA51250c525789727b5c895dc3d2a9b79f83bcc9f504432f7c46cb69cb9dd32d9552b44df9061f1db2691dbf3a49662bce6d895124a55f19b038b1a09261077407bcb
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Filesize
37KB
MD55623a039c27a4c274b375c83e42651d4
SHA1877caa65809f345247c37d0bf64a49b1abda1e60
SHA25687d0845412d5ad22a56954c151f0ae21cba71d2284189fdb0d3c6cb93b6282eb
SHA5123f896c083919d310b4715d267dfccf57e10c8ba67a33f4feb1a6839cb97b922868339b9f448a5ad4360229837c030a03465337ec1aaba7d4fca64b8a31c00fd2