Analysis
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max time kernel
92s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
20-06-2022 08:05
Static task
static1
Behavioral task
behavioral1
Sample
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe
Resource
win7-20220414-en
General
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Target
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe
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Size
2.2MB
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MD5
d9cf40b79a6cd5d19bd9b636cf985458
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SHA1
67aa166e25423854964d6e2ab6e99fc48fd67363
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SHA256
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203
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SHA512
972ae0b55a018937764fef71fd0cc946a20cb7ab531cc4042852e5125e74ac745250dc082c9c223ab9715994200c98bcde3b108499213fdf6a261ff63c827fe3
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exeDesktopLayer.exepid process 2252 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe 5032 DesktopLayer.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe upx C:\Users\Admin\AppData\Local\Temp\5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral2/memory/2252-136-0x0000000000400000-0x000000000042E000-memory.dmp upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral2/memory/5032-138-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exepid process 2884 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe 2884 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe -
Drops file in System32 directory 2 IoCs
Processes:
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exedescription ioc process File created C:\Windows\SysWOW64\ESPI11.dll 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe File opened for modification C:\Windows\SysWOW64\ESPI11.dll 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe -
Drops file in Program Files directory 3 IoCs
Processes:
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exedescription ioc process File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\pxF6E8.tmp 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe -
Processes:
iexplore.exeIEXPLORE.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1859530494" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "362484551" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{999D3502-F080-11EC-A58B-C6557A73C573} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1859530494" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30966925" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30966925" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1961874741" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30966925" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe -
Modifies registry class 1 IoCs
Processes:
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000_Classes\Local Settings 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DesktopLayer.exepid process 5032 DesktopLayer.exe 5032 DesktopLayer.exe 5032 DesktopLayer.exe 5032 DesktopLayer.exe 5032 DesktopLayer.exe 5032 DesktopLayer.exe 5032 DesktopLayer.exe 5032 DesktopLayer.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exepid process 2884 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 3196 iexplore.exe -
Suspicious use of SetWindowsHookEx 7 IoCs
Processes:
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exeiexplore.exeIEXPLORE.EXEOpenWith.exepid process 2884 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe 2884 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe 3196 iexplore.exe 3196 iexplore.exe 1532 IEXPLORE.EXE 1532 IEXPLORE.EXE 2760 OpenWith.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 2884 wrote to memory of 2252 2884 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe PID 2884 wrote to memory of 2252 2884 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe PID 2884 wrote to memory of 2252 2884 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe PID 2252 wrote to memory of 5032 2252 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe DesktopLayer.exe PID 2252 wrote to memory of 5032 2252 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe DesktopLayer.exe PID 2252 wrote to memory of 5032 2252 5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe DesktopLayer.exe PID 5032 wrote to memory of 3196 5032 DesktopLayer.exe iexplore.exe PID 5032 wrote to memory of 3196 5032 DesktopLayer.exe iexplore.exe PID 3196 wrote to memory of 1532 3196 iexplore.exe IEXPLORE.EXE PID 3196 wrote to memory of 1532 3196 iexplore.exe IEXPLORE.EXE PID 3196 wrote to memory of 1532 3196 iexplore.exe IEXPLORE.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe"C:\Users\Admin\AppData\Local\Temp\5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exeC:\Users\Admin\AppData\Local\Temp\5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3196 CREDAT:17410 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776Filesize
471B
MD5ac894ce763ddb15e950560bb84302782
SHA1f722dcbc48ef1f2030e58b5e728c74769402562f
SHA25676e0bc1b2f3a2fb7d536b45a919c9c56eb398ce21e3e999076535529bac97bd5
SHA5125ea5d7efc228bf1fe5b87cc9f2564f691034dc6a8f3957cf96f3eb7e59b522ac28cea1664290c3f4f3a21feb41397e44727f7a3b858527bc17088a9e6e41fadb
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776Filesize
404B
MD590bf05ff3cdcaaaddcd74a8f9568f5fb
SHA1acec9a17cbeca20fe8e20f1236182b6a64693c6b
SHA256328a31e0a2ad413f3dd3ac58f9a6780e60bfa2bc59306dc0d7dcc79c6c01ec85
SHA512e1c4cbbdf7926e5b0ba03a297b3b937f0f9d43807c8295222b79c9f0e8f95279740c2d55d31d12c9e00c2027b612b6308028f3ee122c7d5d42cb473e1ae4ab3f
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C:\Users\Admin\AppData\Local\Temp\5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\5505996b4df80a9ac17ff69b7d2650ad2d88ca0bf7cf4f7c1b7766fe20931203Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\am.dllFilesize
120KB
MD5b4c2caaa15d4e505ad2858ab15eafb58
SHA1a1c30a4d016f1c6bd3bf50e36767af8af166d59b
SHA25693e03eadd330242f2394c15cd32857194e5b80f6300835ef77f8558ca70a2ef1
SHA51209b5903a579685522a521cec3b6026ab0d7b9cff3099f032254dbd2b48fbbdd9a7411c0765049784c64f520d41916e681cae206a736b4fab1868f449e84b4bf2
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C:\Windows\SysWOW64\ESPI11.dllFilesize
120KB
MD5b4c2caaa15d4e505ad2858ab15eafb58
SHA1a1c30a4d016f1c6bd3bf50e36767af8af166d59b
SHA25693e03eadd330242f2394c15cd32857194e5b80f6300835ef77f8558ca70a2ef1
SHA51209b5903a579685522a521cec3b6026ab0d7b9cff3099f032254dbd2b48fbbdd9a7411c0765049784c64f520d41916e681cae206a736b4fab1868f449e84b4bf2
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memory/2252-136-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/2252-131-0x0000000000000000-mapping.dmp
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memory/2884-139-0x0000000000400000-0x0000000000690000-memory.dmpFilesize
2.6MB
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memory/2884-130-0x0000000000400000-0x0000000000690000-memory.dmpFilesize
2.6MB
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memory/5032-138-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/5032-134-0x0000000000000000-mapping.dmp