Analysis
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max time kernel
120s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
24-11-2024 12:29
Behavioral task
behavioral1
Sample
2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe
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Size
26KB
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MD5
7f466ca1545524ddfc4c803ede621e9b
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SHA1
371a43ed645cb3d6f31c4696e91f7e3a0a6ea7c6
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SHA256
040c624d8fd17e043af64be98c169552d2cd629d67e886b4c8f7241686dd1f58
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SHA512
f83b4a57fe2daf058b57fe1a824206019dace65a426c1cdaab5c72611244a3a92497fe1468aa456970233b3cc20e86dbb16d1ea2cecf60dd712c36120424739c
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SSDEEP
384:ZYenjLLAFXrPOnhmDAtmifzOVp91qIb5axDGG:YNryhmDqmGc9MIbUxDt
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt
chaos
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/2536-1-0x0000000000130000-0x000000000013C000-memory.dmp family_chaos behavioral1/files/0x00070000000120fe-4.dat family_chaos behavioral1/memory/2044-7-0x0000000001160000-0x000000000116C000-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 2732 bcdedit.exe 840 bcdedit.exe -
pid Process 2328 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 3 IoCs
description 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_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2044 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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Drops desktop.ini file(s) 64 IoCs
description ioc Process 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\Favorites\Links\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\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\Games\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\Admin\AppData\Local\Microsoft\Windows\History\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\VSUVY3HP\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\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\INNMDE1C\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\FP29B0EC\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\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\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\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\Admin\Pictures\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\B8BOMT1Q\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\All Users\Microsoft\Windows\Start Menu\Programs\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3533259084-2542256011-65585152-1000\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\Favorites\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\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\Links\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\SendTo\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\L1J27TKW\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\WK3MU41S\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\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\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 File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\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 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2564 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 640 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2044 svchost.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 2536 2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe 2536 2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe 2536 2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe 2044 svchost.exe 2044 svchost.exe 2044 svchost.exe 2044 svchost.exe 2044 svchost.exe 2044 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2536 2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2044 svchost.exe Token: SeBackupPrivilege 1964 vssvc.exe Token: SeRestorePrivilege 1964 vssvc.exe Token: SeAuditPrivilege 1964 vssvc.exe Token: SeIncreaseQuotaPrivilege 2748 WMIC.exe Token: SeSecurityPrivilege 2748 WMIC.exe Token: SeTakeOwnershipPrivilege 2748 WMIC.exe Token: SeLoadDriverPrivilege 2748 WMIC.exe Token: SeSystemProfilePrivilege 2748 WMIC.exe Token: SeSystemtimePrivilege 2748 WMIC.exe Token: SeProfSingleProcessPrivilege 2748 WMIC.exe Token: SeIncBasePriorityPrivilege 2748 WMIC.exe Token: SeCreatePagefilePrivilege 2748 WMIC.exe Token: SeBackupPrivilege 2748 WMIC.exe Token: SeRestorePrivilege 2748 WMIC.exe Token: SeShutdownPrivilege 2748 WMIC.exe Token: SeDebugPrivilege 2748 WMIC.exe Token: SeSystemEnvironmentPrivilege 2748 WMIC.exe Token: SeRemoteShutdownPrivilege 2748 WMIC.exe Token: SeUndockPrivilege 2748 WMIC.exe Token: SeManageVolumePrivilege 2748 WMIC.exe Token: 33 2748 WMIC.exe Token: 34 2748 WMIC.exe Token: 35 2748 WMIC.exe Token: SeIncreaseQuotaPrivilege 2748 WMIC.exe Token: SeSecurityPrivilege 2748 WMIC.exe Token: SeTakeOwnershipPrivilege 2748 WMIC.exe Token: SeLoadDriverPrivilege 2748 WMIC.exe Token: SeSystemProfilePrivilege 2748 WMIC.exe Token: SeSystemtimePrivilege 2748 WMIC.exe Token: SeProfSingleProcessPrivilege 2748 WMIC.exe Token: SeIncBasePriorityPrivilege 2748 WMIC.exe Token: SeCreatePagefilePrivilege 2748 WMIC.exe Token: SeBackupPrivilege 2748 WMIC.exe Token: SeRestorePrivilege 2748 WMIC.exe Token: SeShutdownPrivilege 2748 WMIC.exe Token: SeDebugPrivilege 2748 WMIC.exe Token: SeSystemEnvironmentPrivilege 2748 WMIC.exe Token: SeRemoteShutdownPrivilege 2748 WMIC.exe Token: SeUndockPrivilege 2748 WMIC.exe Token: SeManageVolumePrivilege 2748 WMIC.exe Token: 33 2748 WMIC.exe Token: 34 2748 WMIC.exe Token: 35 2748 WMIC.exe Token: SeBackupPrivilege 300 wbengine.exe Token: SeRestorePrivilege 300 wbengine.exe Token: SeSecurityPrivilege 300 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2536 wrote to memory of 2044 2536 2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe 30 PID 2536 wrote to memory of 2044 2536 2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe 30 PID 2536 wrote to memory of 2044 2536 2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe 30 PID 2044 wrote to memory of 1988 2044 svchost.exe 31 PID 2044 wrote to memory of 1988 2044 svchost.exe 31 PID 2044 wrote to memory of 1988 2044 svchost.exe 31 PID 1988 wrote to memory of 2564 1988 cmd.exe 33 PID 1988 wrote to memory of 2564 1988 cmd.exe 33 PID 1988 wrote to memory of 2564 1988 cmd.exe 33 PID 1988 wrote to memory of 2748 1988 cmd.exe 36 PID 1988 wrote to memory of 2748 1988 cmd.exe 36 PID 1988 wrote to memory of 2748 1988 cmd.exe 36 PID 2044 wrote to memory of 2640 2044 svchost.exe 38 PID 2044 wrote to memory of 2640 2044 svchost.exe 38 PID 2044 wrote to memory of 2640 2044 svchost.exe 38 PID 2640 wrote to memory of 2732 2640 cmd.exe 40 PID 2640 wrote to memory of 2732 2640 cmd.exe 40 PID 2640 wrote to memory of 2732 2640 cmd.exe 40 PID 2640 wrote to memory of 840 2640 cmd.exe 41 PID 2640 wrote to memory of 840 2640 cmd.exe 41 PID 2640 wrote to memory of 840 2640 cmd.exe 41 PID 2044 wrote to memory of 2676 2044 svchost.exe 42 PID 2044 wrote to memory of 2676 2044 svchost.exe 42 PID 2044 wrote to memory of 2676 2044 svchost.exe 42 PID 2676 wrote to memory of 2328 2676 cmd.exe 44 PID 2676 wrote to memory of 2328 2676 cmd.exe 44 PID 2676 wrote to memory of 2328 2676 cmd.exe 44 PID 2044 wrote to memory of 640 2044 svchost.exe 49 PID 2044 wrote to memory of 640 2044 svchost.exe 49 PID 2044 wrote to memory of 640 2044 svchost.exe 49 -
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\2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-24_7f466ca1545524ddfc4c803ede621e9b_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2536 -
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)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2044 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1988 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2564
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2748
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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:2640 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2732
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:840
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2676 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2328
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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:640
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1964
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:300
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2924
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1244
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
962B
MD51a31305937bebce0ccfb0e6142831452
SHA174d6e8aed55286c66b2dd15cf16c5ee53056b1c9
SHA25662d5d9737197180da1404755041db64f82667b9bb4ae6ff6619b252ab5cb1695
SHA51267d2155954a133e395084a5fe38adbe923a99603ffffcf1981c942f4f87d1b914808a210c33c10e59eef06873d73de62e2ccaabccd88a8e1055e90a6985be3c5
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
26KB
MD57f466ca1545524ddfc4c803ede621e9b
SHA1371a43ed645cb3d6f31c4696e91f7e3a0a6ea7c6
SHA256040c624d8fd17e043af64be98c169552d2cd629d67e886b4c8f7241686dd1f58
SHA512f83b4a57fe2daf058b57fe1a824206019dace65a426c1cdaab5c72611244a3a92497fe1468aa456970233b3cc20e86dbb16d1ea2cecf60dd712c36120424739c