Analysis
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max time kernel
94s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
03-10-2024 18:28
Behavioral task
behavioral1
Sample
2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
20c3a7d0e1a09ebbca6cf24668c88922
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SHA1
039ac6cffa25f6f0af1f6783c03a7d71dcb7c4ce
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SHA256
3b040a1c36b020c996541d0d88261025918f13ff5ca60887ae5f8c1012934919
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SHA512
68e2e728cebb5cfc7f180fd721272abf1761287e2be6813cdbe012797a3c88e7c056ff02f12d92c549f7db2a25ddb37931343e610ca9337bf124d057796c707b
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SSDEEP
384:p3Mg/bqo2mcxtivpZqjuwzUTJqr91Cjxsxb5HeN:7qo2ptMpgjK1qr92CxbdeN
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
chaos
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/3312-1-0x00000000000D0000-0x00000000000DC000-memory.dmp family_chaos behavioral2/files/0x000800000002340a-6.dat family_chaos -
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 5092 bcdedit.exe 904 bcdedit.exe -
pid Process 3200 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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\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\read_it.txt svchost.exe 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 -
Executes dropped EXE 1 IoCs
pid Process 4384 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\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\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\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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\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\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\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\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\Downloads\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\Searches\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\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\Public\Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2392887640-1187051047-2909758433-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\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\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 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 -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4320 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3252 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4384 svchost.exe -
Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe 4384 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 4384 svchost.exe Token: SeBackupPrivilege 4204 vssvc.exe Token: SeRestorePrivilege 4204 vssvc.exe Token: SeAuditPrivilege 4204 vssvc.exe Token: SeIncreaseQuotaPrivilege 1588 WMIC.exe Token: SeSecurityPrivilege 1588 WMIC.exe Token: SeTakeOwnershipPrivilege 1588 WMIC.exe Token: SeLoadDriverPrivilege 1588 WMIC.exe Token: SeSystemProfilePrivilege 1588 WMIC.exe Token: SeSystemtimePrivilege 1588 WMIC.exe Token: SeProfSingleProcessPrivilege 1588 WMIC.exe Token: SeIncBasePriorityPrivilege 1588 WMIC.exe Token: SeCreatePagefilePrivilege 1588 WMIC.exe Token: SeBackupPrivilege 1588 WMIC.exe Token: SeRestorePrivilege 1588 WMIC.exe Token: SeShutdownPrivilege 1588 WMIC.exe Token: SeDebugPrivilege 1588 WMIC.exe Token: SeSystemEnvironmentPrivilege 1588 WMIC.exe Token: SeRemoteShutdownPrivilege 1588 WMIC.exe Token: SeUndockPrivilege 1588 WMIC.exe Token: SeManageVolumePrivilege 1588 WMIC.exe Token: 33 1588 WMIC.exe Token: 34 1588 WMIC.exe Token: 35 1588 WMIC.exe Token: 36 1588 WMIC.exe Token: SeIncreaseQuotaPrivilege 1588 WMIC.exe Token: SeSecurityPrivilege 1588 WMIC.exe Token: SeTakeOwnershipPrivilege 1588 WMIC.exe Token: SeLoadDriverPrivilege 1588 WMIC.exe Token: SeSystemProfilePrivilege 1588 WMIC.exe Token: SeSystemtimePrivilege 1588 WMIC.exe Token: SeProfSingleProcessPrivilege 1588 WMIC.exe Token: SeIncBasePriorityPrivilege 1588 WMIC.exe Token: SeCreatePagefilePrivilege 1588 WMIC.exe Token: SeBackupPrivilege 1588 WMIC.exe Token: SeRestorePrivilege 1588 WMIC.exe Token: SeShutdownPrivilege 1588 WMIC.exe Token: SeDebugPrivilege 1588 WMIC.exe Token: SeSystemEnvironmentPrivilege 1588 WMIC.exe Token: SeRemoteShutdownPrivilege 1588 WMIC.exe Token: SeUndockPrivilege 1588 WMIC.exe Token: SeManageVolumePrivilege 1588 WMIC.exe Token: 33 1588 WMIC.exe Token: 34 1588 WMIC.exe Token: 35 1588 WMIC.exe Token: 36 1588 WMIC.exe Token: SeBackupPrivilege 2996 wbengine.exe Token: SeRestorePrivilege 2996 wbengine.exe Token: SeSecurityPrivilege 2996 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 3312 wrote to memory of 4384 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 82 PID 3312 wrote to memory of 4384 3312 2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe 82 PID 4384 wrote to memory of 4840 4384 svchost.exe 84 PID 4384 wrote to memory of 4840 4384 svchost.exe 84 PID 4840 wrote to memory of 4320 4840 cmd.exe 86 PID 4840 wrote to memory of 4320 4840 cmd.exe 86 PID 4840 wrote to memory of 1588 4840 cmd.exe 89 PID 4840 wrote to memory of 1588 4840 cmd.exe 89 PID 4384 wrote to memory of 4916 4384 svchost.exe 91 PID 4384 wrote to memory of 4916 4384 svchost.exe 91 PID 4916 wrote to memory of 5092 4916 cmd.exe 93 PID 4916 wrote to memory of 5092 4916 cmd.exe 93 PID 4916 wrote to memory of 904 4916 cmd.exe 94 PID 4916 wrote to memory of 904 4916 cmd.exe 94 PID 4384 wrote to memory of 3216 4384 svchost.exe 95 PID 4384 wrote to memory of 3216 4384 svchost.exe 95 PID 3216 wrote to memory of 3200 3216 cmd.exe 97 PID 3216 wrote to memory of 3200 3216 cmd.exe 97 PID 4384 wrote to memory of 3252 4384 svchost.exe 101 PID 4384 wrote to memory of 3252 4384 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\2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-03_20c3a7d0e1a09ebbca6cf24668c88922_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3312 -
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:4384 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4840 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4320
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1588
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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:4916 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:5092
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:904
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:3216 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3200
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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:3252
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4204
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2996
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4432
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:364
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
23KB
MD520c3a7d0e1a09ebbca6cf24668c88922
SHA1039ac6cffa25f6f0af1f6783c03a7d71dcb7c4ce
SHA2563b040a1c36b020c996541d0d88261025918f13ff5ca60887ae5f8c1012934919
SHA51268e2e728cebb5cfc7f180fd721272abf1761287e2be6813cdbe012797a3c88e7c056ff02f12d92c549f7db2a25ddb37931343e610ca9337bf124d057796c707b
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740