Analysis
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max time kernel
117s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
08/09/2023, 12:42
Behavioral task
behavioral1
Sample
2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe
Resource
win10v2004-20230831-en
General
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Target
2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe
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Size
26KB
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MD5
e95a41155865af1c8c3f613ce84da34f
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SHA1
ea5233564c4342a62a0f32874a6e98e1b4d02443
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SHA256
8a90f0ae242598017c07ad7062357ad0a5d6bfc82bc676cc584a94f9ae8e2160
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SHA512
bfb6dd93e0871dff3606e9b5bb7b5a501182d741b339bfb47c6bb3af96ca353293d4c331fdf3b29ad910cd0edf876cd519493177ac973be0bfd0f37b4713bea4
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SSDEEP
384:RjzZVQvRUXh0t1sNTFxX9ptnemoWO0Q91mH0b6JWG:gA9FhPtRXW9UUb4b
Malware Config
Extracted
C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\read_it.txt
chaos
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 4 IoCs
resource yara_rule behavioral1/memory/2420-0-0x0000000001070000-0x000000000107C000-memory.dmp family_chaos behavioral1/files/0x00080000000120be-5.dat family_chaos behavioral1/memory/1480-7-0x0000000000D10000-0x0000000000D1C000-memory.dmp family_chaos behavioral1/files/0x00080000000120be-6.dat family_chaos -
Deletes shadow copies 2 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 2320 bcdedit.exe 2348 bcdedit.exe -
pid Process 824 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_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1480 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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft Store = "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\Public\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\FZ6PR11S\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\Admin\AppData\Local\Microsoft\Windows\History\History.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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Recorded TV\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\AppData\Roaming\Microsoft\Windows\Recent\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\Admin\Favorites\Links for United States\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\Temporary Internet Files\Content.IE5\T1GYCSOV\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\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\$Recycle.Bin\S-1-5-21-607259312-1573743425-2763420908-1000\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\9ZA6L5EC\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\Pictures\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\Startup\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\Local\Microsoft\Feeds Cache\S14V3QJ7\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\Videos\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\XOUCI7X0\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Start Menu\Programs\Accessories\Windows PowerShell\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Windows\Start Menu\Programs\Accessories\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\Start Menu\Programs\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\Public\Documents\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\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\Music\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\Windows Mail\Stationery\Desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-607259312-1573743425-2763420908-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\OCC48JZO\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\Start Menu\Programs\Accessories\Accessibility\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini 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.
pid Process 2624 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3064 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1480 svchost.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2420 2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe 2420 2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe 1480 svchost.exe 1480 svchost.exe 1480 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2420 2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe Token: SeDebugPrivilege 1480 svchost.exe Token: SeBackupPrivilege 2732 vssvc.exe Token: SeRestorePrivilege 2732 vssvc.exe Token: SeAuditPrivilege 2732 vssvc.exe Token: SeIncreaseQuotaPrivilege 2684 WMIC.exe Token: SeSecurityPrivilege 2684 WMIC.exe Token: SeTakeOwnershipPrivilege 2684 WMIC.exe Token: SeLoadDriverPrivilege 2684 WMIC.exe Token: SeSystemProfilePrivilege 2684 WMIC.exe Token: SeSystemtimePrivilege 2684 WMIC.exe Token: SeProfSingleProcessPrivilege 2684 WMIC.exe Token: SeIncBasePriorityPrivilege 2684 WMIC.exe Token: SeCreatePagefilePrivilege 2684 WMIC.exe Token: SeBackupPrivilege 2684 WMIC.exe Token: SeRestorePrivilege 2684 WMIC.exe Token: SeShutdownPrivilege 2684 WMIC.exe Token: SeDebugPrivilege 2684 WMIC.exe Token: SeSystemEnvironmentPrivilege 2684 WMIC.exe Token: SeRemoteShutdownPrivilege 2684 WMIC.exe Token: SeUndockPrivilege 2684 WMIC.exe Token: SeManageVolumePrivilege 2684 WMIC.exe Token: 33 2684 WMIC.exe Token: 34 2684 WMIC.exe Token: 35 2684 WMIC.exe Token: SeIncreaseQuotaPrivilege 2684 WMIC.exe Token: SeSecurityPrivilege 2684 WMIC.exe Token: SeTakeOwnershipPrivilege 2684 WMIC.exe Token: SeLoadDriverPrivilege 2684 WMIC.exe Token: SeSystemProfilePrivilege 2684 WMIC.exe Token: SeSystemtimePrivilege 2684 WMIC.exe Token: SeProfSingleProcessPrivilege 2684 WMIC.exe Token: SeIncBasePriorityPrivilege 2684 WMIC.exe Token: SeCreatePagefilePrivilege 2684 WMIC.exe Token: SeBackupPrivilege 2684 WMIC.exe Token: SeRestorePrivilege 2684 WMIC.exe Token: SeShutdownPrivilege 2684 WMIC.exe Token: SeDebugPrivilege 2684 WMIC.exe Token: SeSystemEnvironmentPrivilege 2684 WMIC.exe Token: SeRemoteShutdownPrivilege 2684 WMIC.exe Token: SeUndockPrivilege 2684 WMIC.exe Token: SeManageVolumePrivilege 2684 WMIC.exe Token: 33 2684 WMIC.exe Token: 34 2684 WMIC.exe Token: 35 2684 WMIC.exe Token: SeBackupPrivilege 1908 wbengine.exe Token: SeRestorePrivilege 1908 wbengine.exe Token: SeSecurityPrivilege 1908 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2420 wrote to memory of 1480 2420 2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe 28 PID 2420 wrote to memory of 1480 2420 2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe 28 PID 2420 wrote to memory of 1480 2420 2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe 28 PID 1480 wrote to memory of 2356 1480 svchost.exe 29 PID 1480 wrote to memory of 2356 1480 svchost.exe 29 PID 1480 wrote to memory of 2356 1480 svchost.exe 29 PID 2356 wrote to memory of 2624 2356 cmd.exe 31 PID 2356 wrote to memory of 2624 2356 cmd.exe 31 PID 2356 wrote to memory of 2624 2356 cmd.exe 31 PID 2356 wrote to memory of 2684 2356 cmd.exe 34 PID 2356 wrote to memory of 2684 2356 cmd.exe 34 PID 2356 wrote to memory of 2684 2356 cmd.exe 34 PID 1480 wrote to memory of 3036 1480 svchost.exe 36 PID 1480 wrote to memory of 3036 1480 svchost.exe 36 PID 1480 wrote to memory of 3036 1480 svchost.exe 36 PID 3036 wrote to memory of 2320 3036 cmd.exe 38 PID 3036 wrote to memory of 2320 3036 cmd.exe 38 PID 3036 wrote to memory of 2320 3036 cmd.exe 38 PID 3036 wrote to memory of 2348 3036 cmd.exe 39 PID 3036 wrote to memory of 2348 3036 cmd.exe 39 PID 3036 wrote to memory of 2348 3036 cmd.exe 39 PID 1480 wrote to memory of 3060 1480 svchost.exe 40 PID 1480 wrote to memory of 3060 1480 svchost.exe 40 PID 1480 wrote to memory of 3060 1480 svchost.exe 40 PID 3060 wrote to memory of 824 3060 cmd.exe 42 PID 3060 wrote to memory of 824 3060 cmd.exe 42 PID 3060 wrote to memory of 824 3060 cmd.exe 42 PID 1480 wrote to memory of 3064 1480 svchost.exe 48 PID 1480 wrote to memory of 3064 1480 svchost.exe 48 PID 1480 wrote to memory of 3064 1480 svchost.exe 48 -
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\2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe"C:\Users\Admin\AppData\Local\Temp\2023-08-23_e95a41155865af1c8c3f613ce84da34f_destroyer_wannacry_JC.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2420 -
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)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1480 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2356 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2624
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2684
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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:3036 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2320
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2348
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:3060 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:824
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:3064
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2732
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1908
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2836
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1960
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
958B
MD582bb0eb835b55bc4c1699ae5f588b995
SHA1ef7df5dc5a32e7948d029305923876584be60a11
SHA2562d39eb12459b6ce81bff8421e9908401c683382779f6ddda854e9940a736eb6d
SHA512a4728176c1fb3269e022ef4e8ba2effcc1c2d8c80a0007b3cecaf0dcd9500b84353e400564321d277b46697a08e7b626d1719d6fe61b18b486502b5b1f9e1312
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Filesize
958B
MD582bb0eb835b55bc4c1699ae5f588b995
SHA1ef7df5dc5a32e7948d029305923876584be60a11
SHA2562d39eb12459b6ce81bff8421e9908401c683382779f6ddda854e9940a736eb6d
SHA512a4728176c1fb3269e022ef4e8ba2effcc1c2d8c80a0007b3cecaf0dcd9500b84353e400564321d277b46697a08e7b626d1719d6fe61b18b486502b5b1f9e1312
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Filesize
26KB
MD5e95a41155865af1c8c3f613ce84da34f
SHA1ea5233564c4342a62a0f32874a6e98e1b4d02443
SHA2568a90f0ae242598017c07ad7062357ad0a5d6bfc82bc676cc584a94f9ae8e2160
SHA512bfb6dd93e0871dff3606e9b5bb7b5a501182d741b339bfb47c6bb3af96ca353293d4c331fdf3b29ad910cd0edf876cd519493177ac973be0bfd0f37b4713bea4
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Filesize
26KB
MD5e95a41155865af1c8c3f613ce84da34f
SHA1ea5233564c4342a62a0f32874a6e98e1b4d02443
SHA2568a90f0ae242598017c07ad7062357ad0a5d6bfc82bc676cc584a94f9ae8e2160
SHA512bfb6dd93e0871dff3606e9b5bb7b5a501182d741b339bfb47c6bb3af96ca353293d4c331fdf3b29ad910cd0edf876cd519493177ac973be0bfd0f37b4713bea4