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Analysis
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max time kernel
134s -
max time network
102s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
23/07/2024, 20:23
Behavioral task
behavioral1
Sample
2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240709-en
General
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Target
2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
47576f844ceb4d94c792ba29c2dbdd6e
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SHA1
a49df192da22a8cd9c664dd42b6a34c5b2df065b
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SHA256
b12b018f969d01036ec6b085e069b72cc25ab2f8235f7687b4cbe0a68985da7a
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SHA512
3ec4be7c93858d20aa2c7c18f16e4408d8a763b8f3925e243942446ff487d1d93c3874c81aa67803b759bf8ac3ad85694d84caf1904599d4fb6f84f5b4852496
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SSDEEP
384:N3Mg/bqo2mcxtivp1AN4+X0Z/BvJXr91C0xb5reK:3qo2ptMp1g4+kRBBXr9zxbBeK
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/3656-0-0x0000000000280000-0x000000000028C000-memory.dmp family_chaos behavioral2/files/0x0008000000023423-6.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 2580 bcdedit.exe 3480 bcdedit.exe -
pid Process 60 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-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\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 1776 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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Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\Windows\Start Menu\Programs\Accessibility\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Contacts\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\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 F:\$RECYCLE.BIN\S-1-5-21-1750093773-264148664-1320403265-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\Pictures\Camera Roll\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\Disk&Ven_DADY&Prod_HARDDISK\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 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 832 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3284 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1776 svchost.exe -
Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe 1776 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 1776 svchost.exe Token: SeBackupPrivilege 1928 vssvc.exe Token: SeRestorePrivilege 1928 vssvc.exe Token: SeAuditPrivilege 1928 vssvc.exe Token: SeIncreaseQuotaPrivilege 4688 WMIC.exe Token: SeSecurityPrivilege 4688 WMIC.exe Token: SeTakeOwnershipPrivilege 4688 WMIC.exe Token: SeLoadDriverPrivilege 4688 WMIC.exe Token: SeSystemProfilePrivilege 4688 WMIC.exe Token: SeSystemtimePrivilege 4688 WMIC.exe Token: SeProfSingleProcessPrivilege 4688 WMIC.exe Token: SeIncBasePriorityPrivilege 4688 WMIC.exe Token: SeCreatePagefilePrivilege 4688 WMIC.exe Token: SeBackupPrivilege 4688 WMIC.exe Token: SeRestorePrivilege 4688 WMIC.exe Token: SeShutdownPrivilege 4688 WMIC.exe Token: SeDebugPrivilege 4688 WMIC.exe Token: SeSystemEnvironmentPrivilege 4688 WMIC.exe Token: SeRemoteShutdownPrivilege 4688 WMIC.exe Token: SeUndockPrivilege 4688 WMIC.exe Token: SeManageVolumePrivilege 4688 WMIC.exe Token: 33 4688 WMIC.exe Token: 34 4688 WMIC.exe Token: 35 4688 WMIC.exe Token: 36 4688 WMIC.exe Token: SeIncreaseQuotaPrivilege 4688 WMIC.exe Token: SeSecurityPrivilege 4688 WMIC.exe Token: SeTakeOwnershipPrivilege 4688 WMIC.exe Token: SeLoadDriverPrivilege 4688 WMIC.exe Token: SeSystemProfilePrivilege 4688 WMIC.exe Token: SeSystemtimePrivilege 4688 WMIC.exe Token: SeProfSingleProcessPrivilege 4688 WMIC.exe Token: SeIncBasePriorityPrivilege 4688 WMIC.exe Token: SeCreatePagefilePrivilege 4688 WMIC.exe Token: SeBackupPrivilege 4688 WMIC.exe Token: SeRestorePrivilege 4688 WMIC.exe Token: SeShutdownPrivilege 4688 WMIC.exe Token: SeDebugPrivilege 4688 WMIC.exe Token: SeSystemEnvironmentPrivilege 4688 WMIC.exe Token: SeRemoteShutdownPrivilege 4688 WMIC.exe Token: SeUndockPrivilege 4688 WMIC.exe Token: SeManageVolumePrivilege 4688 WMIC.exe Token: 33 4688 WMIC.exe Token: 34 4688 WMIC.exe Token: 35 4688 WMIC.exe Token: 36 4688 WMIC.exe Token: SeBackupPrivilege 764 wbengine.exe Token: SeRestorePrivilege 764 wbengine.exe Token: SeSecurityPrivilege 764 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 3656 wrote to memory of 1776 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 87 PID 3656 wrote to memory of 1776 3656 2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe 87 PID 1776 wrote to memory of 4972 1776 svchost.exe 94 PID 1776 wrote to memory of 4972 1776 svchost.exe 94 PID 4972 wrote to memory of 832 4972 cmd.exe 96 PID 4972 wrote to memory of 832 4972 cmd.exe 96 PID 4972 wrote to memory of 4688 4972 cmd.exe 99 PID 4972 wrote to memory of 4688 4972 cmd.exe 99 PID 1776 wrote to memory of 2208 1776 svchost.exe 100 PID 1776 wrote to memory of 2208 1776 svchost.exe 100 PID 2208 wrote to memory of 2580 2208 cmd.exe 102 PID 2208 wrote to memory of 2580 2208 cmd.exe 102 PID 2208 wrote to memory of 3480 2208 cmd.exe 103 PID 2208 wrote to memory of 3480 2208 cmd.exe 103 PID 1776 wrote to memory of 2892 1776 svchost.exe 104 PID 1776 wrote to memory of 2892 1776 svchost.exe 104 PID 2892 wrote to memory of 60 2892 cmd.exe 106 PID 2892 wrote to memory of 60 2892 cmd.exe 106 PID 1776 wrote to memory of 3284 1776 svchost.exe 110 PID 1776 wrote to memory of 3284 1776 svchost.exe 110 -
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\2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-23_47576f844ceb4d94c792ba29c2dbdd6e_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3656 -
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:1776 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4972 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:832
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4688
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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:2208 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2580
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3480
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2892 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:60
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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:3284
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1928
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:764
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:800
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:2496
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD547576f844ceb4d94c792ba29c2dbdd6e
SHA1a49df192da22a8cd9c664dd42b6a34c5b2df065b
SHA256b12b018f969d01036ec6b085e069b72cc25ab2f8235f7687b4cbe0a68985da7a
SHA5123ec4be7c93858d20aa2c7c18f16e4408d8a763b8f3925e243942446ff487d1d93c3874c81aa67803b759bf8ac3ad85694d84caf1904599d4fb6f84f5b4852496
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740