Analysis
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max time kernel
152s -
max time network
165s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
20-05-2022 04:52
Static task
static1
Behavioral task
behavioral1
Sample
MEMZ-master/MEMZ.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
MEMZ-master/MEMZ.exe
Resource
win10v2004-20220414-en
General
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Target
MEMZ-master/MEMZ.exe
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Size
16KB
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MD5
1d5ad9c8d3fee874d0feb8bfac220a11
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SHA1
ca6d3f7e6c784155f664a9179ca64e4034df9595
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SHA256
3872c12d31fc9825e8661ac01ecee2572460677afbc7093f920a8436a42e28ff
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SHA512
c8246f4137416be33b6d1ac89f2428b7c44d9376ac8489a9fbf65ef128a6c53fb50479e1e400c8e201c8611992ab1d6c1bd3d6cece89013edb4d35cdd22305b1
Malware Config
Signatures
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Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
MEMZ.exedescription ioc process File opened for modification \??\PhysicalDrive0 MEMZ.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Processes:
iexplore.exeIEXPLORE.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "0" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage\pcoptimizerpro.com\Total = "20" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage\pcoptimizerpro.com\Total = "0" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage\pcoptimizerpro.com IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000850f07ecb424934d8f5a48a59e73cec0000000000200000000001066000000010000200000000a6ba72104cd294c3f798642df87a163a4bbb2b35a48a345f9f8d75dbdcef58a000000000e8000000002000020000000a7d0f360a37cb4db0ba9a964b57c0e99d47d5bbf5a35ac06bbb0388e0b6f3fd92000000076a0c3a55044862f2f231514df9a4abda957dd9e30f812d3f09e821c53dd68444000000020df25a79f7dc4445c02fb633fefe56fd25d623e8ca9734865deef3f2c63cb9cb8d189f6417e02302f9bba965ac2578fece6874291ca739521777c65b2b41095 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = c03f01c31d6cd801 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "20" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "359797718" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage\pcoptimizerpro.com\NumberOfSubdomains = "1" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage\pcoptimizerpro.com\ = "20" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DOMStorage\pcoptimizerpro.com\ = "0" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{CDF28471-D810-11EC-A4AE-4224C87335A1} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
MEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exeMEMZ.exepid process 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe 1660 MEMZ.exe 1252 MEMZ.exe 1316 MEMZ.exe 1276 MEMZ.exe 1732 MEMZ.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 460 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 460 iexplore.exe 460 iexplore.exe 1040 IEXPLORE.EXE 1040 IEXPLORE.EXE 1040 IEXPLORE.EXE 1040 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
MEMZ.exeMEMZ.exeiexplore.exedescription pid process target process PID 1096 wrote to memory of 1252 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1252 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1252 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1252 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1316 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1316 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1316 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1316 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1276 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1276 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1276 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1276 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1732 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1732 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1732 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1732 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1660 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1660 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1660 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1660 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1720 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1720 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1720 1096 MEMZ.exe MEMZ.exe PID 1096 wrote to memory of 1720 1096 MEMZ.exe MEMZ.exe PID 1720 wrote to memory of 952 1720 MEMZ.exe notepad.exe PID 1720 wrote to memory of 952 1720 MEMZ.exe notepad.exe PID 1720 wrote to memory of 952 1720 MEMZ.exe notepad.exe PID 1720 wrote to memory of 952 1720 MEMZ.exe notepad.exe PID 1720 wrote to memory of 460 1720 MEMZ.exe iexplore.exe PID 1720 wrote to memory of 460 1720 MEMZ.exe iexplore.exe PID 1720 wrote to memory of 460 1720 MEMZ.exe iexplore.exe PID 1720 wrote to memory of 460 1720 MEMZ.exe iexplore.exe PID 460 wrote to memory of 1040 460 iexplore.exe IEXPLORE.EXE PID 460 wrote to memory of 1040 460 iexplore.exe IEXPLORE.EXE PID 460 wrote to memory of 1040 460 iexplore.exe IEXPLORE.EXE PID 460 wrote to memory of 1040 460 iexplore.exe IEXPLORE.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /watchdog2⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe"C:\Users\Admin\AppData\Local\Temp\MEMZ-master\MEMZ.exe" /main2⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\notepad.exe"C:\Windows\System32\notepad.exe" \note.txt3⤵
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" http://pcoptimizerpro.com/3⤵
- 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:460 CREDAT:275457 /prefetch:24⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015Filesize
60KB
MD5b9f21d8db36e88831e5352bb82c438b3
SHA14a3c330954f9f65a2f5fd7e55800e46ce228a3e2
SHA256998e0209690a48ed33b79af30fc13851e3e3416bed97e3679b6030c10cab361e
SHA512d4a2ac7c14227fbaf8b532398fb69053f0a0d913273f6917027c8cadbba80113fdbec20c2a7eb31b7bb57c99f9fdeccf8576be5f39346d8b564fc72fb1699476
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015Filesize
344B
MD59150750b33caef8f1bcdd8189421e7f8
SHA1c5632ace577109cf7f5f8881faecfffbca9e50c4
SHA2560c81374808f2c0ee9174f902c2c54d57b5e211b618380b1a220ab834df499644
SHA512ad45f29dfbdbf01dd9b0e84da0151c28456fa7a0fbed6977f92420a64ea6112e44d64537cedb8ffa8df61f65de5bae8c6709f413ad39717dfd5a14d6d2cba2c9
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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\9os4y76\imagestore.datFilesize
8KB
MD5debf957ca39e43804cf9d798adfac3b8
SHA1819d7d20daa257c5fc7e5352ee2bf715e36922ca
SHA25611a72f187a588e4a5a310088e54ca3852ae089401e68aa960672b6cd2fcc1fc2
SHA512fe134fa32d16c8b4292da3270715ab849de2542d2b522d7f82cd55fd88474de9a4dbdf3a63b79db37dd672dfb126272c6c3eb4522bb0ef4f9c9019a1ce6db8c3
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\8LPCM7R7.txtFilesize
603B
MD514beabbc2549f26885e9cffa378aeca8
SHA18ce87da0567f2547a3cd0c0ee01e142913a6e27d
SHA25679c0fe658aae5dd004bcb27ba444d688a8f73689e879c49669e8608ae6e334e1
SHA5123e74045febd1e9b64d559d7a3efbd99881f97b3d692951f6909aaf0a35570d47237186a3fd9232b0cfb7f6e3ea5c6164d02eee2c7b2515ad079e6e3b5cfd9f35
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C:\note.txtFilesize
218B
MD5afa6955439b8d516721231029fb9ca1b
SHA1087a043cc123c0c0df2ffadcf8e71e3ac86bbae9
SHA2568e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270
SHA5125da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf
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memory/952-67-0x0000000000000000-mapping.dmp
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memory/1096-54-0x0000000075B71000-0x0000000075B73000-memory.dmpFilesize
8KB
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memory/1252-55-0x0000000000000000-mapping.dmp
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memory/1276-59-0x0000000000000000-mapping.dmp
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memory/1316-57-0x0000000000000000-mapping.dmp
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memory/1660-63-0x0000000000000000-mapping.dmp
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memory/1720-65-0x0000000000000000-mapping.dmp
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memory/1732-60-0x0000000000000000-mapping.dmp