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Analysis
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max time kernel
149s -
max time network
152s -
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, 20:24
Behavioral task
behavioral1
Sample
2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240709-en
General
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Target
2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
48d4cb1f6cadc4f3e8f2a4440585b2c7
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SHA1
1d2284d0e71251e0501693c3f332c204b837528c
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SHA256
574363dd8c2b7660598fde715e3f5b0b09c4f37ddb7ee1774c7cafac8f54b027
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SHA512
79d1be7a1b48339fc446de2fc094027cc272ce13bcecc13d9a861c988cd2cfaf7ce041908a563201ed00a6ce65afacb49ca3b165c236e03dfe3365889a8d5457
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SSDEEP
384:C3Mg/bqo2mcxtivpZqjuwzUbJqr91C4Rvxb5weH:4qo2ptMpgjKtqr9XRvxbueH
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/5028-0-0x0000000000D40000-0x0000000000D4C000-memory.dmp family_chaos behavioral2/files/0x0003000000022aaf-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 1492 bcdedit.exe 788 bcdedit.exe -
pid Process 2288 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-1-5-21-701583114-2636601053-947405450-1000\Control Panel\International\Geo\Nation 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
description ioc Process 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 File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 3556 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\Admin\Desktop\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\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\Searches\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\Accessibility\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-701583114-2636601053-947405450-1000\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\Documents\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\Start Menu\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\OneDrive\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\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\Recent\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 -
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_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe 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 -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4784 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 648 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3556 svchost.exe -
Suspicious behavior: EnumeratesProcesses 52 IoCs
pid Process 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe 3556 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 3556 svchost.exe Token: SeBackupPrivilege 3968 vssvc.exe Token: SeRestorePrivilege 3968 vssvc.exe Token: SeAuditPrivilege 3968 vssvc.exe Token: SeIncreaseQuotaPrivilege 1280 WMIC.exe Token: SeSecurityPrivilege 1280 WMIC.exe Token: SeTakeOwnershipPrivilege 1280 WMIC.exe Token: SeLoadDriverPrivilege 1280 WMIC.exe Token: SeSystemProfilePrivilege 1280 WMIC.exe Token: SeSystemtimePrivilege 1280 WMIC.exe Token: SeProfSingleProcessPrivilege 1280 WMIC.exe Token: SeIncBasePriorityPrivilege 1280 WMIC.exe Token: SeCreatePagefilePrivilege 1280 WMIC.exe Token: SeBackupPrivilege 1280 WMIC.exe Token: SeRestorePrivilege 1280 WMIC.exe Token: SeShutdownPrivilege 1280 WMIC.exe Token: SeDebugPrivilege 1280 WMIC.exe Token: SeSystemEnvironmentPrivilege 1280 WMIC.exe Token: SeRemoteShutdownPrivilege 1280 WMIC.exe Token: SeUndockPrivilege 1280 WMIC.exe Token: SeManageVolumePrivilege 1280 WMIC.exe Token: 33 1280 WMIC.exe Token: 34 1280 WMIC.exe Token: 35 1280 WMIC.exe Token: 36 1280 WMIC.exe Token: SeIncreaseQuotaPrivilege 1280 WMIC.exe Token: SeSecurityPrivilege 1280 WMIC.exe Token: SeTakeOwnershipPrivilege 1280 WMIC.exe Token: SeLoadDriverPrivilege 1280 WMIC.exe Token: SeSystemProfilePrivilege 1280 WMIC.exe Token: SeSystemtimePrivilege 1280 WMIC.exe Token: SeProfSingleProcessPrivilege 1280 WMIC.exe Token: SeIncBasePriorityPrivilege 1280 WMIC.exe Token: SeCreatePagefilePrivilege 1280 WMIC.exe Token: SeBackupPrivilege 1280 WMIC.exe Token: SeRestorePrivilege 1280 WMIC.exe Token: SeShutdownPrivilege 1280 WMIC.exe Token: SeDebugPrivilege 1280 WMIC.exe Token: SeSystemEnvironmentPrivilege 1280 WMIC.exe Token: SeRemoteShutdownPrivilege 1280 WMIC.exe Token: SeUndockPrivilege 1280 WMIC.exe Token: SeManageVolumePrivilege 1280 WMIC.exe Token: 33 1280 WMIC.exe Token: 34 1280 WMIC.exe Token: 35 1280 WMIC.exe Token: 36 1280 WMIC.exe Token: SeBackupPrivilege 2276 wbengine.exe Token: SeRestorePrivilege 2276 wbengine.exe Token: SeSecurityPrivilege 2276 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 5028 wrote to memory of 3556 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 90 PID 5028 wrote to memory of 3556 5028 2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe 90 PID 3556 wrote to memory of 2200 3556 svchost.exe 97 PID 3556 wrote to memory of 2200 3556 svchost.exe 97 PID 2200 wrote to memory of 4784 2200 cmd.exe 99 PID 2200 wrote to memory of 4784 2200 cmd.exe 99 PID 2200 wrote to memory of 1280 2200 cmd.exe 102 PID 2200 wrote to memory of 1280 2200 cmd.exe 102 PID 3556 wrote to memory of 1668 3556 svchost.exe 103 PID 3556 wrote to memory of 1668 3556 svchost.exe 103 PID 1668 wrote to memory of 1492 1668 cmd.exe 105 PID 1668 wrote to memory of 1492 1668 cmd.exe 105 PID 1668 wrote to memory of 788 1668 cmd.exe 106 PID 1668 wrote to memory of 788 1668 cmd.exe 106 PID 3556 wrote to memory of 4104 3556 svchost.exe 107 PID 3556 wrote to memory of 4104 3556 svchost.exe 107 PID 4104 wrote to memory of 2288 4104 cmd.exe 109 PID 4104 wrote to memory of 2288 4104 cmd.exe 109 PID 3556 wrote to memory of 648 3556 svchost.exe 113 PID 3556 wrote to memory of 648 3556 svchost.exe 113 -
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_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-23_48d4cb1f6cadc4f3e8f2a4440585b2c7_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5028 -
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:3556 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2200 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4784
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1280
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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:1668 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1492
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:788
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4104 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2288
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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:648
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3968
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2276
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3584
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4696
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD548d4cb1f6cadc4f3e8f2a4440585b2c7
SHA11d2284d0e71251e0501693c3f332c204b837528c
SHA256574363dd8c2b7660598fde715e3f5b0b09c4f37ddb7ee1774c7cafac8f54b027
SHA51279d1be7a1b48339fc446de2fc094027cc272ce13bcecc13d9a861c988cd2cfaf7ce041908a563201ed00a6ce65afacb49ca3b165c236e03dfe3365889a8d5457
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740