Analysis
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max time kernel
151s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 18:11
Static task
static1
Behavioral task
behavioral1
Sample
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe
Resource
win10v2004-20220812-en
General
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Target
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe
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Size
3.0MB
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MD5
b84dfc03c6f610a24bf3ddf7be7f6e54
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SHA1
311010b0638ba1d954f078f6a9b98b73386906b5
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SHA256
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df
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SHA512
ce3c70d6c7ab8526334cd5ecb12282cb3382481893e39f4bb0090f1c801948a7d4a88deb87b2152766e58540d0c7f37e55c48964a13642a31c881008880342e0
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SSDEEP
49152:A8dXQmuGBnx07pCTyT6c7FQqEfTFfsWw0PFMO6:AoXBuYxv8vyqEfFLwCFM
Malware Config
Extracted
Protocol: smtp- Host:
mail.messagingengine.com - Port:
587 - Username:
azarbaijJ@fastmail.com - Password:
qedrks8q9hlo8up1ao7hrljvc7
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
reg.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Roaming\\FolderName\\csrss.exe" reg.exe -
NirSoft MailPassView 5 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral2/memory/5032-137-0x0000000000400000-0x0000000000488000-memory.dmp MailPassView behavioral2/memory/2224-151-0x0000000000000000-mapping.dmp MailPassView behavioral2/memory/2224-152-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/2224-154-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/2224-155-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 6 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral2/memory/5032-137-0x0000000000400000-0x0000000000488000-memory.dmp WebBrowserPassView behavioral2/memory/5108-156-0x0000000000000000-mapping.dmp WebBrowserPassView behavioral2/memory/5108-157-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/5108-159-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/5108-160-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/5108-162-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 10 IoCs
Processes:
resource yara_rule behavioral2/memory/5032-137-0x0000000000400000-0x0000000000488000-memory.dmp Nirsoft behavioral2/memory/2224-151-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/2224-152-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/2224-154-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/2224-155-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/5108-156-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/5108-157-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/5108-159-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/5108-160-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/5108-162-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Executes dropped EXE 1 IoCs
Processes:
svhost.exepid process 5032 svhost.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
wscript.exedef0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation wscript.exe Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe -
Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
Processes:
vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Drops desktop.ini file(s) 2 IoCs
Processes:
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exedescription ioc process File created C:\Windows\assembly\Desktop.ini def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe File opened for modification C:\Windows\assembly\Desktop.ini def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 whatismyipaddress.com -
Suspicious use of SetThreadContext 3 IoCs
Processes:
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exesvhost.exedescription pid process target process PID 4800 set thread context of 5032 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe svhost.exe PID 5032 set thread context of 2224 5032 svhost.exe vbc.exe PID 5032 set thread context of 5108 5032 svhost.exe vbc.exe -
Drops file in Windows directory 3 IoCs
Processes:
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exedescription ioc process File opened for modification C:\Windows\assembly def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe File created C:\Windows\assembly\Desktop.ini def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe File opened for modification C:\Windows\assembly\Desktop.ini def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3680 timeout.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exevbc.exesvhost.exepid process 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe 5108 vbc.exe 5108 vbc.exe 5032 svhost.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exesvhost.exedescription pid process Token: SeDebugPrivilege 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe Token: SeDebugPrivilege 5032 svhost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
svhost.exepid process 5032 svhost.exe -
Suspicious use of WriteProcessMemory 44 IoCs
Processes:
def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.execmd.exewscript.execmd.execmd.exesvhost.exedescription pid process target process PID 4800 wrote to memory of 1252 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe cmd.exe PID 4800 wrote to memory of 1252 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe cmd.exe PID 4800 wrote to memory of 1252 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe cmd.exe PID 1252 wrote to memory of 4296 1252 cmd.exe wscript.exe PID 1252 wrote to memory of 4296 1252 cmd.exe wscript.exe PID 1252 wrote to memory of 4296 1252 cmd.exe wscript.exe PID 4800 wrote to memory of 5032 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe svhost.exe PID 4800 wrote to memory of 5032 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe svhost.exe PID 4800 wrote to memory of 5032 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe svhost.exe PID 4800 wrote to memory of 5032 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe svhost.exe PID 4800 wrote to memory of 5032 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe svhost.exe PID 4800 wrote to memory of 5032 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe svhost.exe PID 4800 wrote to memory of 5032 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe svhost.exe PID 4800 wrote to memory of 5032 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe svhost.exe PID 4296 wrote to memory of 1316 4296 wscript.exe cmd.exe PID 4296 wrote to memory of 1316 4296 wscript.exe cmd.exe PID 4296 wrote to memory of 1316 4296 wscript.exe cmd.exe PID 1316 wrote to memory of 632 1316 cmd.exe reg.exe PID 1316 wrote to memory of 632 1316 cmd.exe reg.exe PID 1316 wrote to memory of 632 1316 cmd.exe reg.exe PID 4800 wrote to memory of 3116 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe cmd.exe PID 4800 wrote to memory of 3116 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe cmd.exe PID 4800 wrote to memory of 3116 4800 def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe cmd.exe PID 3116 wrote to memory of 3680 3116 cmd.exe timeout.exe PID 3116 wrote to memory of 3680 3116 cmd.exe timeout.exe PID 3116 wrote to memory of 3680 3116 cmd.exe timeout.exe PID 5032 wrote to memory of 2224 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 2224 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 2224 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 2224 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 2224 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 2224 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 2224 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 2224 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 2224 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 5108 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 5108 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 5108 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 5108 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 5108 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 5108 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 5108 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 5108 5032 svhost.exe vbc.exe PID 5032 wrote to memory of 5108 5032 svhost.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe"C:\Users\Admin\AppData\Local\Temp\def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df.exe"1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\FolderName\mata.bat2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\wscript.exewscript.exe "C:\Users\Admin\AppData\Roaming\FolderName\invs.vbs" "C:\Users\Admin\AppData\Roaming\FolderName\mata2.bat"3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\FolderName\mata2.bat" "4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Shell /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\FolderName\csrss.exe" /f5⤵
- Modifies WinLogon for persistence
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"3⤵
- Accesses Microsoft Outlook accounts
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"3⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\FolderName\svhost.bat" "2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 3003⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\holderwb.txtFilesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196
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C:\Users\Admin\AppData\Roaming\FolderName\csrss.exeFilesize
3.0MB
MD5b84dfc03c6f610a24bf3ddf7be7f6e54
SHA1311010b0638ba1d954f078f6a9b98b73386906b5
SHA256def0634b97de032fca1c34f1aecec36362c82a1fdebf652321a9a52208f3a7df
SHA512ce3c70d6c7ab8526334cd5ecb12282cb3382481893e39f4bb0090f1c801948a7d4a88deb87b2152766e58540d0c7f37e55c48964a13642a31c881008880342e0
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C:\Users\Admin\AppData\Roaming\FolderName\invs.vbsFilesize
78B
MD5c578d9653b22800c3eb6b6a51219bbb8
SHA1a97aa251901bbe179a48dbc7a0c1872e163b1f2d
SHA25620a98a7e6e137bb1b9bd5ef6911a479cb8eac925b80d6db4e70b19f62a40cce2
SHA5123ae6dc8f02d1a78e1235a0782b632972da5a74ab32287cc41aa672d4fa4a9d34bb5fc50eba07b6915f2e61c402927cd5f6feeb7f7602afa2f64e91efb3b7fc4d
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C:\Users\Admin\AppData\Roaming\FolderName\mata.batFilesize
76B
MD55e57f6f4e3242ad9719ed5e65346e83e
SHA172346d0208c5edeb69f41ddb4374d56d87221dad
SHA2564ffb3e764dfbc48145231f19e2217f666bc88a44c6f29adec6a5728223048d0c
SHA5127dcd8a5a95965b94bf26ec02ab68b8f854f399d41fb713e4387f6fddb9914c465ccf909f92ee6704e9c0397a77f11f2ca803d68184aa414651988d95824a209f
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C:\Users\Admin\AppData\Roaming\FolderName\mata2.batFilesize
272B
MD504f1ec7d48889d4cb4af9301dc545af8
SHA12984d621c74ac52e5931e8d5e9c452c945101df5
SHA2565cfde47a64e3acd74f3a0a2403b9588186891fb458c015c776fc3f584945e312
SHA5123bd602b9c83b1dfd3df0876d94ff1194388156090c36440e6611699bba80767d1b8668271efcad6b38e73ad2e5f97ce80b1ad391c17f6eaf44fdceb2b3c75bbb
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C:\Users\Admin\AppData\Roaming\FolderName\svhost.batFilesize
207B
MD5555506b15a163535d5f4a0a7ede4722b
SHA10624071a37435110a94651a87c9dfeda72aee845
SHA2560bb7915fe5e7fedc4bdb1088a0f11210c901348abe86b169120613cdee41b4bd
SHA51294530b0b9a5c0e03f42d1c2b9c2e320f1966ee35560bba9ea0bad6f652b8bcc4f5a9770f506d67070408bd71d97c8b8daf20241634cd0d41009196438fe9dfac
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C:\Users\Admin\AppData\Roaming\svhost.exeFilesize
52KB
MD5a64daca3cfbcd039df3ec29d3eddd001
SHA1eee8b2573f71e8d5c3ee7e53af3e6772e090d0f3
SHA256403752009f29381d5e4036b8be94589c89188f9ce8ef5f86959eaaada019ed36
SHA512b6fe2d0ae3fcd4442579ecf10d498d61e0f042813c8fc4be8019da77d849cfcf0b168507139a1b5697227c272de9091788f8e03cf1ce13d5b5077568cfa6a479
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C:\Users\Admin\AppData\Roaming\svhost.exeFilesize
52KB
MD5a64daca3cfbcd039df3ec29d3eddd001
SHA1eee8b2573f71e8d5c3ee7e53af3e6772e090d0f3
SHA256403752009f29381d5e4036b8be94589c89188f9ce8ef5f86959eaaada019ed36
SHA512b6fe2d0ae3fcd4442579ecf10d498d61e0f042813c8fc4be8019da77d849cfcf0b168507139a1b5697227c272de9091788f8e03cf1ce13d5b5077568cfa6a479
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memory/632-144-0x0000000000000000-mapping.dmp
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memory/1252-133-0x0000000000000000-mapping.dmp
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memory/1316-143-0x0000000000000000-mapping.dmp
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memory/2224-152-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/2224-155-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/2224-154-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/2224-151-0x0000000000000000-mapping.dmp
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memory/3116-145-0x0000000000000000-mapping.dmp
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memory/3680-149-0x0000000000000000-mapping.dmp
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memory/4296-135-0x0000000000000000-mapping.dmp
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memory/4800-147-0x0000000074A20000-0x0000000074FD1000-memory.dmpFilesize
5.7MB
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memory/4800-132-0x0000000074A20000-0x0000000074FD1000-memory.dmpFilesize
5.7MB
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memory/5032-150-0x0000000074A20000-0x0000000074FD1000-memory.dmpFilesize
5.7MB
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memory/5032-136-0x0000000000000000-mapping.dmp
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memory/5032-137-0x0000000000400000-0x0000000000488000-memory.dmpFilesize
544KB
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memory/5032-141-0x0000000074A20000-0x0000000074FD1000-memory.dmpFilesize
5.7MB
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memory/5108-156-0x0000000000000000-mapping.dmp
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memory/5108-157-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/5108-159-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/5108-160-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/5108-162-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB