Analysis
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max time kernel
144s -
max time network
130s -
platform
windows10-1703_x64 -
resource
win10-20231023-en -
resource tags
arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system -
submitted
11-12-2023 07:15
Static task
static1
Behavioral task
behavioral1
Sample
ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe
Resource
win10-20231023-en
General
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Target
ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe
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Size
6.9MB
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MD5
7f954a9c2e42d807919bb868ad864a3b
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SHA1
86812994091f590abfe67452e5d4f12c50714a3e
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SHA256
ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b
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SHA512
f11a0353530eacb9ed9a03916789095b07825551b5f6ca0c877c54789c4f2f6758922c3084461ba8df62522db518910239d9a831434c5d318316cd5c284e68e5
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SSDEEP
196608:6RW8Bq+q3WGhRQY914E1DF+V3bm/LCGNq3eUeKP3gdVfzj:6QeqbhPK4DFY4CtOUYVfzj
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 2112 wmaformat.exe 3764 wmaformat.exe -
Loads dropped DLL 3 IoCs
pid Process 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 45.155.250.90 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 63 IoCs
description ioc Process File created C:\Program Files (x86)\WMAFormat\bin\x86\is-CCA7S.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-N3KDQ.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-JBEGH.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-6AFN4.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-C29AK.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-4MHGR.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\plugins\internal\is-7C2P8.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-7B6QH.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-1VUU7.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-6TTPQ.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-C4T4B.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-1PNTP.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-TER1E.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File opened for modification C:\Program Files (x86)\WMAFormat\wmaformat.exe ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-7KL5C.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-BD57F.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-SA9NE.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-4FMMR.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File opened for modification C:\Program Files (x86)\WMAFormat\uninstall\unins000.dat ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-UV4M4.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-U429V.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-LAIJS.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-0D7L9.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-GU9DF.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-149C1.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-5K8KF.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\plugins\internal\is-D0CEC.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-IO4V0.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-T56T4.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-O2PRH.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-S62TJ.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-TK6KT.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-BVL0V.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-HSQLF.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\uninstall\is-TBTVS.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-4BRFR.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-IHFSE.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-SIJPA.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-OEMPS.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\is-SGN5M.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-NTETI.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-QB7SO.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-N04Q7.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-RQQAR.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-VHJ8T.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-ED281.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-RJ7DO.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-M7BBJ.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-P6EOM.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-21FH3.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-B0FVA.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-STFQF.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-HS86N.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-8ED18.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-JGOTT.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-ET0M9.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-N9EB3.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-MSB8C.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-B1HQ3.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\uninstall\unins000.dat ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-2VVML.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-LUARJ.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\lessmsi\is-29SO4.tmp ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp -
Runs net.exe
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Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 1032 wrote to memory of 4688 1032 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe 71 PID 1032 wrote to memory of 4688 1032 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe 71 PID 1032 wrote to memory of 4688 1032 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe 71 PID 4688 wrote to memory of 1900 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 72 PID 4688 wrote to memory of 1900 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 72 PID 4688 wrote to memory of 1900 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 72 PID 4688 wrote to memory of 2112 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 74 PID 4688 wrote to memory of 2112 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 74 PID 4688 wrote to memory of 2112 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 74 PID 4688 wrote to memory of 4292 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 75 PID 4688 wrote to memory of 4292 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 75 PID 4688 wrote to memory of 4292 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 75 PID 4688 wrote to memory of 3764 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 76 PID 4688 wrote to memory of 3764 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 76 PID 4688 wrote to memory of 3764 4688 ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp 76 PID 4292 wrote to memory of 2932 4292 net.exe 78 PID 4292 wrote to memory of 2932 4292 net.exe 78 PID 4292 wrote to memory of 2932 4292 net.exe 78
Processes
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C:\Users\Admin\AppData\Local\Temp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe"C:\Users\Admin\AppData\Local\Temp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1032 -
C:\Users\Admin\AppData\Local\Temp\is-05O55.tmp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp"C:\Users\Admin\AppData\Local\Temp\is-05O55.tmp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp" /SL5="$5023A,6953145,68096,C:\Users\Admin\AppData\Local\Temp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4688 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Query3⤵PID:1900
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C:\Program Files (x86)\WMAFormat\wmaformat.exe"C:\Program Files (x86)\WMAFormat\wmaformat.exe" -i3⤵
- Executes dropped EXE
PID:2112
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 113⤵
- Suspicious use of WriteProcessMemory
PID:4292 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 114⤵PID:2932
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C:\Program Files (x86)\WMAFormat\wmaformat.exe"C:\Program Files (x86)\WMAFormat\wmaformat.exe" -s3⤵
- Executes dropped EXE
PID:3764
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.4MB
MD534f5bd971a285b845239ae8963c5141e
SHA166b2543aaf285388ebce42d7b3bc743661008302
SHA2560d60278965ecfc9ee430221b021c1d12dfe6bb5494614234a86d0d585c964ad0
SHA512befe6b3f53a304e5e20da8046c546ca684758d07432aab09406d1b889a24d7f5a525b4920e229a221dc99464e62c6debac4f35ef0f89cf49a39da99914f218c3
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Filesize
1.5MB
MD575a84fd86810b49363f4df762add7ecc
SHA1d20b20d627635e7a8bd3918b90a89d6827155eaf
SHA256c52e05c1a1963b288514073690340c40d86e8179303297b1da57ec842db63ca4
SHA51287b85b90285aec0403931959d0f9c3afba2d163f1befc212681c6cf992f9bf1391d8f87f1df1eb9ea3c35e7cd95c477b66367f44c898de557fc0b94d9b76b365
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Filesize
1.8MB
MD50280b00d7cf6a1d0e836f72f5e94c0fb
SHA18f21d39aa6137c758f73c378042dde4001006946
SHA2565494dda0175037320250f0dca19188091efff397b7e3a7f181e449c4c216703c
SHA512072cf3bc6c580035a8f0ae719b03662d762a994138f879d2c6380cd8aff71b1c55731fb99658dec6a23756ad8fbafa7122480a6cd8434788eee6047181b7920e
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C:\Users\Admin\AppData\Local\Temp\is-05O55.tmp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp
Filesize687KB
MD5f448d7f4b76e5c9c3a4eaff16a8b9b73
SHA131808f1ffa84c954376975b7cdb0007e6b762488
SHA2567233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49
SHA512f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
19KB
MD53adaa386b671c2df3bae5b39dc093008
SHA1067cf95fbdb922d81db58432c46930f86d23dded
SHA25671cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38
SHA512bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303