Analysis
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max time kernel
94s -
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 17:21
Behavioral task
behavioral1
Sample
2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
Resource
win7-20240903-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/5056-1-0x0000000000130000-0x000000000013C000-memory.dmp family_chaos behavioral2/files/0x000b000000023b68-6.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 2284 bcdedit.exe 1968 bcdedit.exe -
pid Process 4572 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 1920 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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Favorites\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\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\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\Videos\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\Contacts\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\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\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\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\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\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 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 Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 3496 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 4192 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1920 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe 1920 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 1920 svchost.exe Token: SeBackupPrivilege 1816 vssvc.exe Token: SeRestorePrivilege 1816 vssvc.exe Token: SeAuditPrivilege 1816 vssvc.exe Token: SeIncreaseQuotaPrivilege 4700 WMIC.exe Token: SeSecurityPrivilege 4700 WMIC.exe Token: SeTakeOwnershipPrivilege 4700 WMIC.exe Token: SeLoadDriverPrivilege 4700 WMIC.exe Token: SeSystemProfilePrivilege 4700 WMIC.exe Token: SeSystemtimePrivilege 4700 WMIC.exe Token: SeProfSingleProcessPrivilege 4700 WMIC.exe Token: SeIncBasePriorityPrivilege 4700 WMIC.exe Token: SeCreatePagefilePrivilege 4700 WMIC.exe Token: SeBackupPrivilege 4700 WMIC.exe Token: SeRestorePrivilege 4700 WMIC.exe Token: SeShutdownPrivilege 4700 WMIC.exe Token: SeDebugPrivilege 4700 WMIC.exe Token: SeSystemEnvironmentPrivilege 4700 WMIC.exe Token: SeRemoteShutdownPrivilege 4700 WMIC.exe Token: SeUndockPrivilege 4700 WMIC.exe Token: SeManageVolumePrivilege 4700 WMIC.exe Token: 33 4700 WMIC.exe Token: 34 4700 WMIC.exe Token: 35 4700 WMIC.exe Token: 36 4700 WMIC.exe Token: SeIncreaseQuotaPrivilege 4700 WMIC.exe Token: SeSecurityPrivilege 4700 WMIC.exe Token: SeTakeOwnershipPrivilege 4700 WMIC.exe Token: SeLoadDriverPrivilege 4700 WMIC.exe Token: SeSystemProfilePrivilege 4700 WMIC.exe Token: SeSystemtimePrivilege 4700 WMIC.exe Token: SeProfSingleProcessPrivilege 4700 WMIC.exe Token: SeIncBasePriorityPrivilege 4700 WMIC.exe Token: SeCreatePagefilePrivilege 4700 WMIC.exe Token: SeBackupPrivilege 4700 WMIC.exe Token: SeRestorePrivilege 4700 WMIC.exe Token: SeShutdownPrivilege 4700 WMIC.exe Token: SeDebugPrivilege 4700 WMIC.exe Token: SeSystemEnvironmentPrivilege 4700 WMIC.exe Token: SeRemoteShutdownPrivilege 4700 WMIC.exe Token: SeUndockPrivilege 4700 WMIC.exe Token: SeManageVolumePrivilege 4700 WMIC.exe Token: 33 4700 WMIC.exe Token: 34 4700 WMIC.exe Token: 35 4700 WMIC.exe Token: 36 4700 WMIC.exe Token: SeBackupPrivilege 4272 wbengine.exe Token: SeRestorePrivilege 4272 wbengine.exe Token: SeSecurityPrivilege 4272 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 5056 wrote to memory of 1920 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 82 PID 5056 wrote to memory of 1920 5056 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 82 PID 1920 wrote to memory of 4704 1920 svchost.exe 83 PID 1920 wrote to memory of 4704 1920 svchost.exe 83 PID 4704 wrote to memory of 3496 4704 cmd.exe 85 PID 4704 wrote to memory of 3496 4704 cmd.exe 85 PID 4704 wrote to memory of 4700 4704 cmd.exe 88 PID 4704 wrote to memory of 4700 4704 cmd.exe 88 PID 1920 wrote to memory of 4108 1920 svchost.exe 90 PID 1920 wrote to memory of 4108 1920 svchost.exe 90 PID 4108 wrote to memory of 2284 4108 cmd.exe 92 PID 4108 wrote to memory of 2284 4108 cmd.exe 92 PID 4108 wrote to memory of 1968 4108 cmd.exe 93 PID 4108 wrote to memory of 1968 4108 cmd.exe 93 PID 1920 wrote to memory of 4020 1920 svchost.exe 94 PID 1920 wrote to memory of 4020 1920 svchost.exe 94 PID 4020 wrote to memory of 4572 4020 cmd.exe 96 PID 4020 wrote to memory of 4572 4020 cmd.exe 96 PID 1920 wrote to memory of 4192 1920 svchost.exe 101 PID 1920 wrote to memory of 4192 1920 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:5056 -
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:1920 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4704 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:3496
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4700
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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:4108 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2284
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1968
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4020 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4572
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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:4192
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1816
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4272
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2848
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3716
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