Analysis
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max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
15-04-2024 20:52
Behavioral task
behavioral1
Sample
2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe
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Size
233KB
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MD5
a995c4d5b506266750e5314bb4ba2eee
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SHA1
732076bcc2a12224c76c8f336e73a23a510a8d52
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SHA256
0388b2592814fee8b53d26abe2a920269abdb064641214e8081fc2ae3d2781de
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SHA512
9cb9b03be9ae84db1aad26508802be9ffff77358fc4051fec197f19b5487668db6970a0559ea8cf9d9812677d88f22c5033e4adc60c43999fa95f9396265e5b5
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SSDEEP
3072:ic9RrWZt+em3xr8E1Q8dm0NYuaacYee2bE6//hXngpw4MmFQGvDrv:ic96Vr0Cu+Fp8Hvn
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2184-0-0x0000000001330000-0x0000000001370000-memory.dmp family_chaos C:\Users\Admin\AppData\Roaming\svchost.exe family_chaos behavioral1/memory/2352-7-0x0000000000E80000-0x0000000000EC0000-memory.dmp family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2184-0-0x0000000001330000-0x0000000001370000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware C:\Users\Admin\AppData\Roaming\svchost.exe INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/2352-7-0x0000000000E80000-0x0000000000EC0000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
Processes:
bcdedit.exebcdedit.exepid process 2320 bcdedit.exe 1564 bcdedit.exe -
Renames multiple (173) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Processes:
wbadmin.exepid process 2844 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 3 IoCs
Processes:
svchost.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\READ_ME.txt svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 2352 svchost.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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Drops desktop.ini file(s) 64 IoCs
Processes:
svchost.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\CM2WAJS5\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\5VY10BSW\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\OQAMAYIL\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\HL1JTUOY\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\M221U1AY\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\66RFTKYZ\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\NNULH633\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\hfy69jmun.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 2572 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 2184 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid process 2352 svchost.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exesvchost.exepid process 2184 2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe 2184 2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe 2352 svchost.exe 2352 svchost.exe 2352 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 2184 2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe Token: SeDebugPrivilege 2352 svchost.exe Token: SeBackupPrivilege 2636 vssvc.exe Token: SeRestorePrivilege 2636 vssvc.exe Token: SeAuditPrivilege 2636 vssvc.exe Token: SeIncreaseQuotaPrivilege 2448 WMIC.exe Token: SeSecurityPrivilege 2448 WMIC.exe Token: SeTakeOwnershipPrivilege 2448 WMIC.exe Token: SeLoadDriverPrivilege 2448 WMIC.exe Token: SeSystemProfilePrivilege 2448 WMIC.exe Token: SeSystemtimePrivilege 2448 WMIC.exe Token: SeProfSingleProcessPrivilege 2448 WMIC.exe Token: SeIncBasePriorityPrivilege 2448 WMIC.exe Token: SeCreatePagefilePrivilege 2448 WMIC.exe Token: SeBackupPrivilege 2448 WMIC.exe Token: SeRestorePrivilege 2448 WMIC.exe Token: SeShutdownPrivilege 2448 WMIC.exe Token: SeDebugPrivilege 2448 WMIC.exe Token: SeSystemEnvironmentPrivilege 2448 WMIC.exe Token: SeRemoteShutdownPrivilege 2448 WMIC.exe Token: SeUndockPrivilege 2448 WMIC.exe Token: SeManageVolumePrivilege 2448 WMIC.exe Token: 33 2448 WMIC.exe Token: 34 2448 WMIC.exe Token: 35 2448 WMIC.exe Token: SeIncreaseQuotaPrivilege 2448 WMIC.exe Token: SeSecurityPrivilege 2448 WMIC.exe Token: SeTakeOwnershipPrivilege 2448 WMIC.exe Token: SeLoadDriverPrivilege 2448 WMIC.exe Token: SeSystemProfilePrivilege 2448 WMIC.exe Token: SeSystemtimePrivilege 2448 WMIC.exe Token: SeProfSingleProcessPrivilege 2448 WMIC.exe Token: SeIncBasePriorityPrivilege 2448 WMIC.exe Token: SeCreatePagefilePrivilege 2448 WMIC.exe Token: SeBackupPrivilege 2448 WMIC.exe Token: SeRestorePrivilege 2448 WMIC.exe Token: SeShutdownPrivilege 2448 WMIC.exe Token: SeDebugPrivilege 2448 WMIC.exe Token: SeSystemEnvironmentPrivilege 2448 WMIC.exe Token: SeRemoteShutdownPrivilege 2448 WMIC.exe Token: SeUndockPrivilege 2448 WMIC.exe Token: SeManageVolumePrivilege 2448 WMIC.exe Token: 33 2448 WMIC.exe Token: 34 2448 WMIC.exe Token: 35 2448 WMIC.exe Token: SeBackupPrivilege 2264 wbengine.exe Token: SeRestorePrivilege 2264 wbengine.exe Token: SeSecurityPrivilege 2264 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 2184 wrote to memory of 2352 2184 2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe svchost.exe PID 2184 wrote to memory of 2352 2184 2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe svchost.exe PID 2184 wrote to memory of 2352 2184 2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe svchost.exe PID 2352 wrote to memory of 3012 2352 svchost.exe cmd.exe PID 2352 wrote to memory of 3012 2352 svchost.exe cmd.exe PID 2352 wrote to memory of 3012 2352 svchost.exe cmd.exe PID 3012 wrote to memory of 2572 3012 cmd.exe vssadmin.exe PID 3012 wrote to memory of 2572 3012 cmd.exe vssadmin.exe PID 3012 wrote to memory of 2572 3012 cmd.exe vssadmin.exe PID 3012 wrote to memory of 2448 3012 cmd.exe WMIC.exe PID 3012 wrote to memory of 2448 3012 cmd.exe WMIC.exe PID 3012 wrote to memory of 2448 3012 cmd.exe WMIC.exe PID 2352 wrote to memory of 2380 2352 svchost.exe cmd.exe PID 2352 wrote to memory of 2380 2352 svchost.exe cmd.exe PID 2352 wrote to memory of 2380 2352 svchost.exe cmd.exe PID 2380 wrote to memory of 2320 2380 cmd.exe bcdedit.exe PID 2380 wrote to memory of 2320 2380 cmd.exe bcdedit.exe PID 2380 wrote to memory of 2320 2380 cmd.exe bcdedit.exe PID 2380 wrote to memory of 1564 2380 cmd.exe bcdedit.exe PID 2380 wrote to memory of 1564 2380 cmd.exe bcdedit.exe PID 2380 wrote to memory of 1564 2380 cmd.exe bcdedit.exe PID 2352 wrote to memory of 2832 2352 svchost.exe cmd.exe PID 2352 wrote to memory of 2832 2352 svchost.exe cmd.exe PID 2352 wrote to memory of 2832 2352 svchost.exe cmd.exe PID 2832 wrote to memory of 2844 2832 cmd.exe wbadmin.exe PID 2832 wrote to memory of 2844 2832 cmd.exe wbadmin.exe PID 2832 wrote to memory of 2844 2832 cmd.exe wbadmin.exe PID 2352 wrote to memory of 2184 2352 svchost.exe NOTEPAD.EXE PID 2352 wrote to memory of 2184 2352 svchost.exe NOTEPAD.EXE PID 2352 wrote to memory of 2184 2352 svchost.exe NOTEPAD.EXE -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ_ME.txt3⤵
- Opens file in notepad (likely ransom note)
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\READ_ME.txtFilesize
45B
MD50ec4d0317f9ae087ae1972b1d29e81e8
SHA1b385917c22675e13c2f16492f3b3a254ac3e5262
SHA2560c534a67e4f2c40b641a4be15304119316bbf93c12fa2d63ee219a92303f981b
SHA51221d65dfaef39b478d3156499f949f4d79f0091de7eddd86802f5515c9abfbdf1c0981b8094f9a474e217efdb97931e093d08b3fd2fa2e6a92b461d71f8d7205d
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C:\Users\Admin\AppData\Roaming\EditRegister.xpsFilesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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C:\Users\Admin\AppData\Roaming\svchost.exeFilesize
233KB
MD5a995c4d5b506266750e5314bb4ba2eee
SHA1732076bcc2a12224c76c8f336e73a23a510a8d52
SHA2560388b2592814fee8b53d26abe2a920269abdb064641214e8081fc2ae3d2781de
SHA5129cb9b03be9ae84db1aad26508802be9ffff77358fc4051fec197f19b5487668db6970a0559ea8cf9d9812677d88f22c5033e4adc60c43999fa95f9396265e5b5
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memory/2184-0-0x0000000001330000-0x0000000001370000-memory.dmpFilesize
256KB
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memory/2184-1-0x000007FEF5F60000-0x000007FEF694C000-memory.dmpFilesize
9.9MB
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memory/2184-8-0x000007FEF5F60000-0x000007FEF694C000-memory.dmpFilesize
9.9MB
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memory/2352-9-0x000007FEF5F60000-0x000007FEF694C000-memory.dmpFilesize
9.9MB
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memory/2352-7-0x0000000000E80000-0x0000000000EC0000-memory.dmpFilesize
256KB
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memory/2352-67-0x000000001AE10000-0x000000001AE90000-memory.dmpFilesize
512KB
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memory/2352-890-0x000007FEF5F60000-0x000007FEF694C000-memory.dmpFilesize
9.9MB
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memory/2352-891-0x000000001AE10000-0x000000001AE90000-memory.dmpFilesize
512KB