Analysis
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max time kernel
134s -
max time network
107s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
21-08-2024 13:41
Behavioral task
behavioral1
Sample
2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
0ecf53d9ddfc474ad81863089bafd60f
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SHA1
4a59a70bbd36d9cee4f307c04e551b66750c5205
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SHA256
26951a620630d5cc4d118f5706f8fd2d63b8d725075d0f8ba9078fbc8a8b66b9
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SHA512
bb1a16e5b431861da1051ad3a28bcebdaf4281f4432dd95471bf287fc9901dbe8ed702b17587ea5cef9966cffe62e361a9e8e8ec95dc18e756ba9dca7dcf2311
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SSDEEP
384:E3MLWHn3kI3fcSxlR2WpCdeTwJgr91Czxb51eC:8n3kIE69pCs8gr9ixbDeC
Malware Config
Extracted
C:\Users\Admin\Desktop\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/4128-1-0x0000000000820000-0x000000000082C000-memory.dmp family_chaos behavioral2/files/0x0009000000009d9e-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 2940 bcdedit.exe 916 bcdedit.exe -
pid Process 4168 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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\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 636 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\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\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\SendTo\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\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\Pictures\Saved 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\Public\Music\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1302416131-1437503476-2806442725-1000\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\AppData\Roaming\Microsoft\Windows\Recent\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\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\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\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\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 -
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 224 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3572 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 636 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe 636 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 636 svchost.exe Token: SeBackupPrivilege 2320 vssvc.exe Token: SeRestorePrivilege 2320 vssvc.exe Token: SeAuditPrivilege 2320 vssvc.exe Token: SeIncreaseQuotaPrivilege 4312 WMIC.exe Token: SeSecurityPrivilege 4312 WMIC.exe Token: SeTakeOwnershipPrivilege 4312 WMIC.exe Token: SeLoadDriverPrivilege 4312 WMIC.exe Token: SeSystemProfilePrivilege 4312 WMIC.exe Token: SeSystemtimePrivilege 4312 WMIC.exe Token: SeProfSingleProcessPrivilege 4312 WMIC.exe Token: SeIncBasePriorityPrivilege 4312 WMIC.exe Token: SeCreatePagefilePrivilege 4312 WMIC.exe Token: SeBackupPrivilege 4312 WMIC.exe Token: SeRestorePrivilege 4312 WMIC.exe Token: SeShutdownPrivilege 4312 WMIC.exe Token: SeDebugPrivilege 4312 WMIC.exe Token: SeSystemEnvironmentPrivilege 4312 WMIC.exe Token: SeRemoteShutdownPrivilege 4312 WMIC.exe Token: SeUndockPrivilege 4312 WMIC.exe Token: SeManageVolumePrivilege 4312 WMIC.exe Token: 33 4312 WMIC.exe Token: 34 4312 WMIC.exe Token: 35 4312 WMIC.exe Token: 36 4312 WMIC.exe Token: SeIncreaseQuotaPrivilege 4312 WMIC.exe Token: SeSecurityPrivilege 4312 WMIC.exe Token: SeTakeOwnershipPrivilege 4312 WMIC.exe Token: SeLoadDriverPrivilege 4312 WMIC.exe Token: SeSystemProfilePrivilege 4312 WMIC.exe Token: SeSystemtimePrivilege 4312 WMIC.exe Token: SeProfSingleProcessPrivilege 4312 WMIC.exe Token: SeIncBasePriorityPrivilege 4312 WMIC.exe Token: SeCreatePagefilePrivilege 4312 WMIC.exe Token: SeBackupPrivilege 4312 WMIC.exe Token: SeRestorePrivilege 4312 WMIC.exe Token: SeShutdownPrivilege 4312 WMIC.exe Token: SeDebugPrivilege 4312 WMIC.exe Token: SeSystemEnvironmentPrivilege 4312 WMIC.exe Token: SeRemoteShutdownPrivilege 4312 WMIC.exe Token: SeUndockPrivilege 4312 WMIC.exe Token: SeManageVolumePrivilege 4312 WMIC.exe Token: 33 4312 WMIC.exe Token: 34 4312 WMIC.exe Token: 35 4312 WMIC.exe Token: 36 4312 WMIC.exe Token: SeBackupPrivilege 3988 wbengine.exe Token: SeRestorePrivilege 3988 wbengine.exe Token: SeSecurityPrivilege 3988 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4128 wrote to memory of 636 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 90 PID 4128 wrote to memory of 636 4128 2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe 90 PID 636 wrote to memory of 836 636 svchost.exe 93 PID 636 wrote to memory of 836 636 svchost.exe 93 PID 836 wrote to memory of 224 836 cmd.exe 95 PID 836 wrote to memory of 224 836 cmd.exe 95 PID 836 wrote to memory of 4312 836 cmd.exe 98 PID 836 wrote to memory of 4312 836 cmd.exe 98 PID 636 wrote to memory of 3052 636 svchost.exe 99 PID 636 wrote to memory of 3052 636 svchost.exe 99 PID 3052 wrote to memory of 2940 3052 cmd.exe 101 PID 3052 wrote to memory of 2940 3052 cmd.exe 101 PID 3052 wrote to memory of 916 3052 cmd.exe 102 PID 3052 wrote to memory of 916 3052 cmd.exe 102 PID 636 wrote to memory of 3708 636 svchost.exe 103 PID 636 wrote to memory of 3708 636 svchost.exe 103 PID 3708 wrote to memory of 4168 3708 cmd.exe 105 PID 3708 wrote to memory of 4168 3708 cmd.exe 105 PID 636 wrote to memory of 3572 636 svchost.exe 110 PID 636 wrote to memory of 3572 636 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\2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-21_0ecf53d9ddfc474ad81863089bafd60f_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4128 -
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:636 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:836 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:224
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4312
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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:3052 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2940
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:916
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:3708 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4168
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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:3572
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2320
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3988
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:384
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:1400
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD50ecf53d9ddfc474ad81863089bafd60f
SHA14a59a70bbd36d9cee4f307c04e551b66750c5205
SHA25626951a620630d5cc4d118f5706f8fd2d63b8d725075d0f8ba9078fbc8a8b66b9
SHA512bb1a16e5b431861da1051ad3a28bcebdaf4281f4432dd95471bf287fc9901dbe8ed702b17587ea5cef9966cffe62e361a9e8e8ec95dc18e756ba9dca7dcf2311
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740