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Analysis
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max time kernel
92s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
07/12/2024, 17:24
Behavioral task
behavioral1
Sample
2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
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Size
22KB
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MD5
81da4689d58474d5628687d0c0f80247
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SHA1
e665e68f8f5525891a1f80f1e11005a9791747c3
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SHA256
bda399f853180c703a7329c66dd19fe620dc533edd7444a4844f25db07bc4c5b
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SHA512
40dfe5b0160af540c0773d30d6a4cca6f8fdb5e76bf03b706edbb8d1e597b46847594802ab82743cb21298751333f590163ade9a9b23f34b1ce9aa0a994ad04f
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SSDEEP
384:c3MLWHn3kI3fbLR5LZrdpRVgjudJ6r91Crxb1tQeP:0n3kIzt9tdpRmj+6r9SxbkeP
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
1MCrfrWne7m1KLysxkoUv617djCB3y9ZjZ
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/1512-1-0x0000000000E50000-0x0000000000E5C000-memory.dmp family_chaos behavioral2/files/0x0008000000023cb3-6.dat 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 4504 bcdedit.exe 1572 bcdedit.exe -
pid Process 4796 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation svchost.exe -
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 3604 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) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Admin\AppData\Roaming\Microsoft\Windows\Recent\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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3756129449-3121373848-4276368241-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000 vds.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4988 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3960 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3604 svchost.exe -
Suspicious behavior: EnumeratesProcesses 54 IoCs
pid Process 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe 3604 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 3604 svchost.exe Token: SeBackupPrivilege 668 vssvc.exe Token: SeRestorePrivilege 668 vssvc.exe Token: SeAuditPrivilege 668 vssvc.exe Token: SeIncreaseQuotaPrivilege 3400 WMIC.exe Token: SeSecurityPrivilege 3400 WMIC.exe Token: SeTakeOwnershipPrivilege 3400 WMIC.exe Token: SeLoadDriverPrivilege 3400 WMIC.exe Token: SeSystemProfilePrivilege 3400 WMIC.exe Token: SeSystemtimePrivilege 3400 WMIC.exe Token: SeProfSingleProcessPrivilege 3400 WMIC.exe Token: SeIncBasePriorityPrivilege 3400 WMIC.exe Token: SeCreatePagefilePrivilege 3400 WMIC.exe Token: SeBackupPrivilege 3400 WMIC.exe Token: SeRestorePrivilege 3400 WMIC.exe Token: SeShutdownPrivilege 3400 WMIC.exe Token: SeDebugPrivilege 3400 WMIC.exe Token: SeSystemEnvironmentPrivilege 3400 WMIC.exe Token: SeRemoteShutdownPrivilege 3400 WMIC.exe Token: SeUndockPrivilege 3400 WMIC.exe Token: SeManageVolumePrivilege 3400 WMIC.exe Token: 33 3400 WMIC.exe Token: 34 3400 WMIC.exe Token: 35 3400 WMIC.exe Token: 36 3400 WMIC.exe Token: SeIncreaseQuotaPrivilege 3400 WMIC.exe Token: SeSecurityPrivilege 3400 WMIC.exe Token: SeTakeOwnershipPrivilege 3400 WMIC.exe Token: SeLoadDriverPrivilege 3400 WMIC.exe Token: SeSystemProfilePrivilege 3400 WMIC.exe Token: SeSystemtimePrivilege 3400 WMIC.exe Token: SeProfSingleProcessPrivilege 3400 WMIC.exe Token: SeIncBasePriorityPrivilege 3400 WMIC.exe Token: SeCreatePagefilePrivilege 3400 WMIC.exe Token: SeBackupPrivilege 3400 WMIC.exe Token: SeRestorePrivilege 3400 WMIC.exe Token: SeShutdownPrivilege 3400 WMIC.exe Token: SeDebugPrivilege 3400 WMIC.exe Token: SeSystemEnvironmentPrivilege 3400 WMIC.exe Token: SeRemoteShutdownPrivilege 3400 WMIC.exe Token: SeUndockPrivilege 3400 WMIC.exe Token: SeManageVolumePrivilege 3400 WMIC.exe Token: 33 3400 WMIC.exe Token: 34 3400 WMIC.exe Token: 35 3400 WMIC.exe Token: 36 3400 WMIC.exe Token: SeBackupPrivilege 1964 wbengine.exe Token: SeRestorePrivilege 1964 wbengine.exe Token: SeSecurityPrivilege 1964 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 1512 wrote to memory of 3604 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 82 PID 1512 wrote to memory of 3604 1512 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 82 PID 3604 wrote to memory of 4100 3604 svchost.exe 83 PID 3604 wrote to memory of 4100 3604 svchost.exe 83 PID 4100 wrote to memory of 4988 4100 cmd.exe 85 PID 4100 wrote to memory of 4988 4100 cmd.exe 85 PID 4100 wrote to memory of 3400 4100 cmd.exe 88 PID 4100 wrote to memory of 3400 4100 cmd.exe 88 PID 3604 wrote to memory of 2068 3604 svchost.exe 90 PID 3604 wrote to memory of 2068 3604 svchost.exe 90 PID 2068 wrote to memory of 4504 2068 cmd.exe 92 PID 2068 wrote to memory of 4504 2068 cmd.exe 92 PID 2068 wrote to memory of 1572 2068 cmd.exe 93 PID 2068 wrote to memory of 1572 2068 cmd.exe 93 PID 3604 wrote to memory of 4868 3604 svchost.exe 94 PID 3604 wrote to memory of 4868 3604 svchost.exe 94 PID 4868 wrote to memory of 4796 4868 cmd.exe 96 PID 4868 wrote to memory of 4796 4868 cmd.exe 96 PID 3604 wrote to memory of 3960 3604 svchost.exe 101 PID 3604 wrote to memory of 3960 3604 svchost.exe 101 -
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\2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1512 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3604 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4100 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4988
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3400
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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:2068 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4504
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1572
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4868 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4796
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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:3960
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:668
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1964
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3880
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:1852
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
22KB
MD581da4689d58474d5628687d0c0f80247
SHA1e665e68f8f5525891a1f80f1e11005a9791747c3
SHA256bda399f853180c703a7329c66dd19fe620dc533edd7444a4844f25db07bc4c5b
SHA51240dfe5b0160af540c0773d30d6a4cca6f8fdb5e76bf03b706edbb8d1e597b46847594802ab82743cb21298751333f590163ade9a9b23f34b1ce9aa0a994ad04f
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Filesize
854B
MD530dbd9beaecba46ffb68b2ba7167542c
SHA1403bbce281174af6acf794be6b5cd83e864ba42a
SHA2567c72579a3d1e9c78e0385c6ceb96e54411b5be12e5eb9b9386878c6356d8a506
SHA51271f9036e9b637ddb8c1025f5df0a8c631bfb13823ab4c3f70b8b1d854610ab1053d0a15cacee2f84e93ad21428e3dbe34fe294ebbaed8939c2e5549526a5d920