Analysis
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max time kernel
16s -
max time network
16s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
11-12-2024 03:24
Behavioral task
behavioral1
Sample
2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe
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Size
419KB
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MD5
8a484d02addb483bf392508d9a1012f3
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SHA1
a4e8fd94099815e720c38dba4d7fa9672aa78f46
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SHA256
5ac4b4eb4e96607e6410a580d96dd609ec206cf5d04da13a0cc1a39c27c23a72
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SHA512
296a3c543d00773f4b5270a55da1c87f077192534880f31b69b46769d125f10bc3dd958f1d40e1ee85e4251ae38318568d5ccf7bb52c7cbb69e1b11d46e1e2fe
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SSDEEP
6144:K0oq99kjeyjaxSGcSh5DF2MdgS4fUfOL0PE:3Vk7axSGcShdF2MOS4ZoP
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/2736-8-0x0000000000BB0000-0x0000000000C1E000-memory.dmp family_chaos behavioral1/files/0x00080000000120fd-7.dat family_chaos behavioral1/memory/2684-1-0x0000000001200000-0x000000000126E000-memory.dmp family_chaos -
Chaos family
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2992 bcdedit.exe 2156 bcdedit.exe -
pid Process 2856 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 2 IoCs
description ioc Process 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
pid Process 2736 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe -
Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\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\Public\Music\Sample Music\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\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\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\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\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\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\25UY7HZX\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\Admin\Documents\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\Admin\AppData\Roaming\Microsoft\Windows\SendTo\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\Desktop\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe 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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\All Users\Microsoft\Windows\Start Menu\Programs\Startup\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\RTJA0BV0\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Searches\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\3K0NZPWJ\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\Local\Microsoft\Feeds Cache\JMFEWY8E\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\386UAANV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\FXDUII3O\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\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\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\CBCNU6WZ\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\B329PW0O\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\Music\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\Favorites\Links\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\6o1xvx513.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 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2816 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 628 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2684 2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe 2736 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2684 2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe 2684 2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe 2684 2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe 2736 svchost.exe 2736 svchost.exe 2736 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2684 2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe Token: SeDebugPrivilege 2736 svchost.exe Token: SeBackupPrivilege 1672 vssvc.exe Token: SeRestorePrivilege 1672 vssvc.exe Token: SeAuditPrivilege 1672 vssvc.exe Token: SeIncreaseQuotaPrivilege 1680 WMIC.exe Token: SeSecurityPrivilege 1680 WMIC.exe Token: SeTakeOwnershipPrivilege 1680 WMIC.exe Token: SeLoadDriverPrivilege 1680 WMIC.exe Token: SeSystemProfilePrivilege 1680 WMIC.exe Token: SeSystemtimePrivilege 1680 WMIC.exe Token: SeProfSingleProcessPrivilege 1680 WMIC.exe Token: SeIncBasePriorityPrivilege 1680 WMIC.exe Token: SeCreatePagefilePrivilege 1680 WMIC.exe Token: SeBackupPrivilege 1680 WMIC.exe Token: SeRestorePrivilege 1680 WMIC.exe Token: SeShutdownPrivilege 1680 WMIC.exe Token: SeDebugPrivilege 1680 WMIC.exe Token: SeSystemEnvironmentPrivilege 1680 WMIC.exe Token: SeRemoteShutdownPrivilege 1680 WMIC.exe Token: SeUndockPrivilege 1680 WMIC.exe Token: SeManageVolumePrivilege 1680 WMIC.exe Token: 33 1680 WMIC.exe Token: 34 1680 WMIC.exe Token: 35 1680 WMIC.exe Token: SeIncreaseQuotaPrivilege 1680 WMIC.exe Token: SeSecurityPrivilege 1680 WMIC.exe Token: SeTakeOwnershipPrivilege 1680 WMIC.exe Token: SeLoadDriverPrivilege 1680 WMIC.exe Token: SeSystemProfilePrivilege 1680 WMIC.exe Token: SeSystemtimePrivilege 1680 WMIC.exe Token: SeProfSingleProcessPrivilege 1680 WMIC.exe Token: SeIncBasePriorityPrivilege 1680 WMIC.exe Token: SeCreatePagefilePrivilege 1680 WMIC.exe Token: SeBackupPrivilege 1680 WMIC.exe Token: SeRestorePrivilege 1680 WMIC.exe Token: SeShutdownPrivilege 1680 WMIC.exe Token: SeDebugPrivilege 1680 WMIC.exe Token: SeSystemEnvironmentPrivilege 1680 WMIC.exe Token: SeRemoteShutdownPrivilege 1680 WMIC.exe Token: SeUndockPrivilege 1680 WMIC.exe Token: SeManageVolumePrivilege 1680 WMIC.exe Token: 33 1680 WMIC.exe Token: 34 1680 WMIC.exe Token: 35 1680 WMIC.exe Token: SeBackupPrivilege 2176 wbengine.exe Token: SeRestorePrivilege 2176 wbengine.exe Token: SeSecurityPrivilege 2176 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2684 wrote to memory of 2736 2684 2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe 31 PID 2684 wrote to memory of 2736 2684 2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe 31 PID 2684 wrote to memory of 2736 2684 2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe 31 PID 2736 wrote to memory of 2808 2736 svchost.exe 32 PID 2736 wrote to memory of 2808 2736 svchost.exe 32 PID 2736 wrote to memory of 2808 2736 svchost.exe 32 PID 2808 wrote to memory of 2816 2808 cmd.exe 34 PID 2808 wrote to memory of 2816 2808 cmd.exe 34 PID 2808 wrote to memory of 2816 2808 cmd.exe 34 PID 2808 wrote to memory of 1680 2808 cmd.exe 37 PID 2808 wrote to memory of 1680 2808 cmd.exe 37 PID 2808 wrote to memory of 1680 2808 cmd.exe 37 PID 2736 wrote to memory of 828 2736 svchost.exe 39 PID 2736 wrote to memory of 828 2736 svchost.exe 39 PID 2736 wrote to memory of 828 2736 svchost.exe 39 PID 828 wrote to memory of 2992 828 cmd.exe 41 PID 828 wrote to memory of 2992 828 cmd.exe 41 PID 828 wrote to memory of 2992 828 cmd.exe 41 PID 828 wrote to memory of 2156 828 cmd.exe 42 PID 828 wrote to memory of 2156 828 cmd.exe 42 PID 828 wrote to memory of 2156 828 cmd.exe 42 PID 2736 wrote to memory of 1904 2736 svchost.exe 43 PID 2736 wrote to memory of 1904 2736 svchost.exe 43 PID 2736 wrote to memory of 1904 2736 svchost.exe 43 PID 1904 wrote to memory of 2856 1904 cmd.exe 45 PID 1904 wrote to memory of 2856 1904 cmd.exe 45 PID 1904 wrote to memory of 2856 1904 cmd.exe 45 PID 2736 wrote to memory of 628 2736 svchost.exe 50 PID 2736 wrote to memory of 628 2736 svchost.exe 50 PID 2736 wrote to memory of 628 2736 svchost.exe 50 -
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\2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-11_8a484d02addb483bf392508d9a1012f3_wannacry.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2684 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2736 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2808 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2816
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1680
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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
PID:828 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2992
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2156
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1904 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2856
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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)
PID:628
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1672
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2176
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2588
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2380
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
335B
MD58bcd05b71c7716aa11ae6c0834964cb9
SHA1a0a1671dab22ce954e879ea94ca066df27c18c58
SHA256a5ed8ea221ddb9224d508c774a7b60601af01038f3948dc66a37094836ea9c98
SHA512e0433f077f3f4a43f4189e6ae0a602fd85793fb4b2f549ad933db6b3e8f9c707329e4bdbf271fdc9b226d8a67aeb47a3a1ddaf0d108d3abffeda74b333bed374
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Filesize
419KB
MD58a484d02addb483bf392508d9a1012f3
SHA1a4e8fd94099815e720c38dba4d7fa9672aa78f46
SHA2565ac4b4eb4e96607e6410a580d96dd609ec206cf5d04da13a0cc1a39c27c23a72
SHA512296a3c543d00773f4b5270a55da1c87f077192534880f31b69b46769d125f10bc3dd958f1d40e1ee85e4251ae38318568d5ccf7bb52c7cbb69e1b11d46e1e2fe
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0