Analysis
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max time kernel
41s -
platform
windows11-21h2_x64 -
resource
win11-20250313-en -
resource tags
arch:x64arch:x86image:win11-20250313-enlocale:en-usos:windows11-21h2-x64system -
submitted
22/03/2025, 22:44
Behavioral task
behavioral1
Sample
2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe
Resource
win11-20250313-en
General
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Target
2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe
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Size
22KB
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MD5
8b75fae87885a0b1a0c3c2b601d6e399
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SHA1
120224bd569c681c4cbdf879f341145081bd9317
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SHA256
a00428527fb92182aa0fce541e09b4d7dcb19b00af756f5e15c2dc7c6747bf93
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SHA512
6719ae41b3918ba58a036e57720303f2b864797b77863834de14451bf8b524c6138e3ab74237258b2a32b8d04498debcda593adbcf418565e714f0506dd5f3c9
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SSDEEP
384:13MLWHn3kIkfMU9asv1zpd8R4+CTJJr91Cz7bSbeS:Fn3kInqLvFp64+6Jr9i7baeS
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral1/memory/4224-1-0x0000000000450000-0x000000000045C000-memory.dmp family_chaos behavioral1/files/0x001300000002af53-6.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 4560 bcdedit.exe 2728 bcdedit.exe -
pid Process 2532 wbadmin.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\stub.url stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini stub.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt stub.exe -
Executes dropped EXE 1 IoCs
pid Process 1768 stub.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 stub.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini stub.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini stub.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini stub.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini stub.exe File opened for modification C:\Users\Admin\Videos\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\desktop.ini stub.exe File opened for modification C:\Users\Public\Videos\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini stub.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1136229799-3442283115-138161576-1000\desktop.ini stub.exe File opened for modification C:\Users\Admin\Searches\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini stub.exe File opened for modification C:\Users\Public\Documents\desktop.ini stub.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini stub.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini stub.exe File opened for modification C:\Users\Public\Pictures\desktop.ini stub.exe File opened for modification C:\Users\Public\Music\desktop.ini stub.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini stub.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini stub.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini stub.exe File opened for modification C:\Users\Admin\Music\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini stub.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini stub.exe File opened for modification C:\Users\Admin\Documents\desktop.ini stub.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini stub.exe File opened for modification C:\Users\Public\Desktop\desktop.ini stub.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 1900 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1136229799-3442283115-138161576-1000_Classes\Local Settings stub.exe -
Opens file in notepad (likely ransom note) 2 IoCs
pid Process 2952 NOTEPAD.EXE 232 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1768 stub.exe -
Suspicious behavior: EnumeratesProcesses 43 IoCs
pid Process 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe 1768 stub.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 1768 stub.exe Token: SeBackupPrivilege 400 vssvc.exe Token: SeRestorePrivilege 400 vssvc.exe Token: SeAuditPrivilege 400 vssvc.exe Token: SeIncreaseQuotaPrivilege 1728 WMIC.exe Token: SeSecurityPrivilege 1728 WMIC.exe Token: SeTakeOwnershipPrivilege 1728 WMIC.exe Token: SeLoadDriverPrivilege 1728 WMIC.exe Token: SeSystemProfilePrivilege 1728 WMIC.exe Token: SeSystemtimePrivilege 1728 WMIC.exe Token: SeProfSingleProcessPrivilege 1728 WMIC.exe Token: SeIncBasePriorityPrivilege 1728 WMIC.exe Token: SeCreatePagefilePrivilege 1728 WMIC.exe Token: SeBackupPrivilege 1728 WMIC.exe Token: SeRestorePrivilege 1728 WMIC.exe Token: SeShutdownPrivilege 1728 WMIC.exe Token: SeDebugPrivilege 1728 WMIC.exe Token: SeSystemEnvironmentPrivilege 1728 WMIC.exe Token: SeRemoteShutdownPrivilege 1728 WMIC.exe Token: SeUndockPrivilege 1728 WMIC.exe Token: SeManageVolumePrivilege 1728 WMIC.exe Token: 33 1728 WMIC.exe Token: 34 1728 WMIC.exe Token: 35 1728 WMIC.exe Token: 36 1728 WMIC.exe Token: SeIncreaseQuotaPrivilege 1728 WMIC.exe Token: SeSecurityPrivilege 1728 WMIC.exe Token: SeTakeOwnershipPrivilege 1728 WMIC.exe Token: SeLoadDriverPrivilege 1728 WMIC.exe Token: SeSystemProfilePrivilege 1728 WMIC.exe Token: SeSystemtimePrivilege 1728 WMIC.exe Token: SeProfSingleProcessPrivilege 1728 WMIC.exe Token: SeIncBasePriorityPrivilege 1728 WMIC.exe Token: SeCreatePagefilePrivilege 1728 WMIC.exe Token: SeBackupPrivilege 1728 WMIC.exe Token: SeRestorePrivilege 1728 WMIC.exe Token: SeShutdownPrivilege 1728 WMIC.exe Token: SeDebugPrivilege 1728 WMIC.exe Token: SeSystemEnvironmentPrivilege 1728 WMIC.exe Token: SeRemoteShutdownPrivilege 1728 WMIC.exe Token: SeUndockPrivilege 1728 WMIC.exe Token: SeManageVolumePrivilege 1728 WMIC.exe Token: 33 1728 WMIC.exe Token: 34 1728 WMIC.exe Token: 35 1728 WMIC.exe Token: 36 1728 WMIC.exe Token: SeBackupPrivilege 352 wbengine.exe Token: SeRestorePrivilege 352 wbengine.exe Token: SeSecurityPrivilege 352 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4224 wrote to memory of 1768 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 82 PID 4224 wrote to memory of 1768 4224 2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe 82 PID 1768 wrote to memory of 1476 1768 stub.exe 83 PID 1768 wrote to memory of 1476 1768 stub.exe 83 PID 1476 wrote to memory of 1900 1476 cmd.exe 85 PID 1476 wrote to memory of 1900 1476 cmd.exe 85 PID 1476 wrote to memory of 1728 1476 cmd.exe 88 PID 1476 wrote to memory of 1728 1476 cmd.exe 88 PID 1768 wrote to memory of 2260 1768 stub.exe 90 PID 1768 wrote to memory of 2260 1768 stub.exe 90 PID 2260 wrote to memory of 4560 2260 cmd.exe 92 PID 2260 wrote to memory of 4560 2260 cmd.exe 92 PID 2260 wrote to memory of 2728 2260 cmd.exe 93 PID 2260 wrote to memory of 2728 2260 cmd.exe 93 PID 1768 wrote to memory of 924 1768 stub.exe 94 PID 1768 wrote to memory of 924 1768 stub.exe 94 PID 924 wrote to memory of 2532 924 cmd.exe 96 PID 924 wrote to memory of 2532 924 cmd.exe 96 PID 1768 wrote to memory of 2952 1768 stub.exe 101 PID 1768 wrote to memory of 2952 1768 stub.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\2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-03-22_8b75fae87885a0b1a0c3c2b601d6e399_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4224 -
C:\Users\Admin\AppData\Roaming\stub.exe"C:\Users\Admin\AppData\Roaming\stub.exe"2⤵
- 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:1768 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1476 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1900
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1728
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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:2260 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4560
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2728
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:924 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2532
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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:2952
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:400
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:352
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4840
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:1856
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\read_it.txt1⤵
- Opens file in notepad (likely ransom note)
PID:232
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
22KB
MD58b75fae87885a0b1a0c3c2b601d6e399
SHA1120224bd569c681c4cbdf879f341145081bd9317
SHA256a00428527fb92182aa0fce541e09b4d7dcb19b00af756f5e15c2dc7c6747bf93
SHA5126719ae41b3918ba58a036e57720303f2b864797b77863834de14451bf8b524c6138e3ab74237258b2a32b8d04498debcda593adbcf418565e714f0506dd5f3c9
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Filesize
961B
MD576cf4b4b048d3adad48300ddb890b166
SHA11099a3ea6d9b92ff9e9fb1fbcaa51b907c65f911
SHA25655cd6766a0830a3e75eac538e955baa64a2aa5c7ca56661d080919cbe87ea472
SHA5120ac5807d857cf75ed64bbcd5fcd70d98e08f6a625f774da1402c56228aa492603a578d9461e388f793d3b718d7a19a659e68bb0a043013fb3ce02d71f5b20b4b