Analysis
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max time kernel
145s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
06/03/2025, 07:50
Static task
static1
Behavioral task
behavioral1
Sample
ef284d2e02d57b7090632e1bf06b8fa3.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
ef284d2e02d57b7090632e1bf06b8fa3.exe
Resource
win10v2004-20250217-en
General
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Target
ef284d2e02d57b7090632e1bf06b8fa3.exe
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Size
3.7MB
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MD5
ef284d2e02d57b7090632e1bf06b8fa3
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SHA1
85c5c5dc98d3d49478635f1d846761ab21ff7827
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SHA256
d3d5963442e6c36209ec3b38d4e16600283423af9c2a212291bb6cd7e8a837e7
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SHA512
2d2e4c7d85626be637b5f959b72de9493759adfff7a6e4a7a640f7a02102b68714f039f85570770952f9b7546a6664c0f7879fc5e07ff3a83e630808069dfb57
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SSDEEP
3072:WM/ZmolMbeDeDejyCeaev0beJ0kXC0ex75qlyrBmkepbe3eTLe3UzoeyeYHIHO+r:
Malware Config
Extracted
nanocore
1.2.2.0
backu4734.duckdns.org:8092
ccf3c62d-d356-4a80-bb94-307bc35a5e01
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activate_away_mode
false
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backup_connection_host
backu4734.duckdns.org
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2021-01-05T15:22:20.555580436Z
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bypass_user_account_control
false
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bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
8092
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default_group
Backup
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
30000
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keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
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mutex
ccf3c62d-d356-4a80-bb94-307bc35a5e01
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
backu4734.duckdns.org
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primary_dns_server
8.8.8.8
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request_elevation
true
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restart_delay
5000
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run_delay
0
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run_on_startup
false
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
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wan_timeout
8000
Signatures
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Nanocore family
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Windows security bypass 2 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths ef284d2e02d57b7090632e1bf06b8fa3.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\Cursors\dbe9ct81Se8a4fj44Ve\svchost.exe = "0" ef284d2e02d57b7090632e1bf06b8fa3.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\ef284d2e02d57b7090632e1bf06b8fa3.exe = "0" ef284d2e02d57b7090632e1bf06b8fa3.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2204 powershell.exe 2424 powershell.exe 2004 powershell.exe -
Windows security modification 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths ef284d2e02d57b7090632e1bf06b8fa3.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions ef284d2e02d57b7090632e1bf06b8fa3.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\Cursors\dbe9ct81Se8a4fj44Ve\svchost.exe = "0" ef284d2e02d57b7090632e1bf06b8fa3.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\ef284d2e02d57b7090632e1bf06b8fa3.exe = "0" ef284d2e02d57b7090632e1bf06b8fa3.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\fKffdGf3c164N7699460bb1fcTjd45OP4lacryvp3Ofa9 = "C:\\Windows\\Cursors\\dbe9ct81Se8a4fj44Ve\\svchost.exe" ef284d2e02d57b7090632e1bf06b8fa3.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DPI Subsystem = "C:\\Program Files (x86)\\DPI Subsystem\\dpiss.exe" ef284d2e02d57b7090632e1bf06b8fa3.exe -
Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA ef284d2e02d57b7090632e1bf06b8fa3.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 10 IoCs
pid Process 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2124 set thread context of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\DPI Subsystem\dpiss.exe ef284d2e02d57b7090632e1bf06b8fa3.exe File opened for modification C:\Program Files (x86)\DPI Subsystem\dpiss.exe ef284d2e02d57b7090632e1bf06b8fa3.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\Cursors\dbe9ct81Se8a4fj44Ve\svchost.exe ef284d2e02d57b7090632e1bf06b8fa3.exe File created C:\Windows\Cursors\dbe9ct81Se8a4fj44Ve\svchost.exe ef284d2e02d57b7090632e1bf06b8fa3.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 9 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ef284d2e02d57b7090632e1bf06b8fa3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language timeout.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ef284d2e02d57b7090632e1bf06b8fa3.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 2488 timeout.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2612 schtasks.exe 872 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 2004 powershell.exe 2424 powershell.exe 2204 powershell.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 2004 powershell.exe Token: SeDebugPrivilege 2204 powershell.exe Token: SeDebugPrivilege 2424 powershell.exe Token: SeDebugPrivilege 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe Token: SeDebugPrivilege 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe -
Suspicious use of WriteProcessMemory 37 IoCs
description pid Process procid_target PID 2124 wrote to memory of 2004 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 31 PID 2124 wrote to memory of 2004 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 31 PID 2124 wrote to memory of 2004 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 31 PID 2124 wrote to memory of 2004 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 31 PID 2124 wrote to memory of 2204 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 33 PID 2124 wrote to memory of 2204 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 33 PID 2124 wrote to memory of 2204 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 33 PID 2124 wrote to memory of 2204 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 33 PID 2124 wrote to memory of 2424 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 35 PID 2124 wrote to memory of 2424 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 35 PID 2124 wrote to memory of 2424 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 35 PID 2124 wrote to memory of 2424 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 35 PID 2124 wrote to memory of 2344 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 37 PID 2124 wrote to memory of 2344 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 37 PID 2124 wrote to memory of 2344 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 37 PID 2124 wrote to memory of 2344 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 37 PID 2344 wrote to memory of 2488 2344 cmd.exe 39 PID 2344 wrote to memory of 2488 2344 cmd.exe 39 PID 2344 wrote to memory of 2488 2344 cmd.exe 39 PID 2344 wrote to memory of 2488 2344 cmd.exe 39 PID 2124 wrote to memory of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 PID 2124 wrote to memory of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 PID 2124 wrote to memory of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 PID 2124 wrote to memory of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 PID 2124 wrote to memory of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 PID 2124 wrote to memory of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 PID 2124 wrote to memory of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 PID 2124 wrote to memory of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 PID 2124 wrote to memory of 2572 2124 ef284d2e02d57b7090632e1bf06b8fa3.exe 40 PID 2572 wrote to memory of 2612 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 41 PID 2572 wrote to memory of 2612 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 41 PID 2572 wrote to memory of 2612 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 41 PID 2572 wrote to memory of 2612 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 41 PID 2572 wrote to memory of 872 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 43 PID 2572 wrote to memory of 872 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 43 PID 2572 wrote to memory of 872 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 43 PID 2572 wrote to memory of 872 2572 ef284d2e02d57b7090632e1bf06b8fa3.exe 43
Processes
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C:\Users\Admin\AppData\Local\Temp\ef284d2e02d57b7090632e1bf06b8fa3.exe"C:\Users\Admin\AppData\Local\Temp\ef284d2e02d57b7090632e1bf06b8fa3.exe"1⤵
- Windows security bypass
- Windows security modification
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2124 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Cursors\dbe9ct81Se8a4fj44Ve\svchost.exe" -Force2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2004
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\ef284d2e02d57b7090632e1bf06b8fa3.exe" -Force2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2204
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Cursors\dbe9ct81Se8a4fj44Ve\svchost.exe" -Force2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2424
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 12⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2344 -
C:\Windows\SysWOW64\timeout.exetimeout 13⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:2488
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C:\Users\Admin\AppData\Local\Temp\ef284d2e02d57b7090632e1bf06b8fa3.exe"C:\Users\Admin\AppData\Local\Temp\ef284d2e02d57b7090632e1bf06b8fa3.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2572 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE1B8.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2612
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE283.tmp"3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:872
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5547a0f429416de4a5d31fea5a8b37c41
SHA15116e814699f3b88b79443bd34881a8cb2e00df3
SHA25638af3ff333d956d0f04755459d7997c654b6f21aa3626165da69057db13d7c2d
SHA512020d9c529847604e92dee6c6a1d832d907ed821370baac29368624c4833d50363eab6f767fa884e49060f8923684ffbbfaa6fd494286dd8154283bfebb4a75b5
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Filesize
1KB
MD55fea24e883e06e4df6d240dc72abf2c5
SHA1d778bf0f436141e02df4b421e8188abdcc9a84a4
SHA256e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66
SHA51215afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD5efb6c292486005f2a393ee63e229b9d3
SHA17a3d57bb4d6153d9860f021c08d6a1f7950b6f1e
SHA256f24d299d84af0cc0348af7f3b89bd9a78b13872daa5bcb3aef9376127b6eee18
SHA512519f3b1f13449861669899b05d4ad816ba551ef347c7ceb2ecbe7f6823771906ff76dc718754ff57e425380f6154db7df2c86ed018f04f8293a1e0470a17bc4c