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Analysis
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max time kernel
144s -
max time network
125s -
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, 15:24
Behavioral task
behavioral1
Sample
2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240709-en
General
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Target
2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
9821b5be1e0ad7419d26f80c8b12ac1c
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SHA1
92c2a201d959deef0a98a3c2bee4fda3d86a4dfa
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SHA256
60d4ab9baefce0627e9d4ac8bd3f6efa8a1b3e9c36a32f6a84266a4d6d01654d
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SHA512
7f934d4b613d272d4952ca65e5182825a7fc3a17ad3e222d93389e1c6aed4e8088f0c4c5b2e3cce5fadf9661a3542916e0d412ac9e202ff92f907073359dcd0d
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SSDEEP
384:y3Mg/bqo2mcxtivpZqjuwzU3J2r91CZ4xxb5bee:Iqo2ptMpgjK52r9jxbRee
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/2812-0-0x00000000009C0000-0x00000000009CC000-memory.dmp family_chaos behavioral2/files/0x0003000000022a99-6.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 4812 bcdedit.exe 4388 bcdedit.exe -
pid Process 4856 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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\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 64 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\Desktop\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\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 C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Internet Explorer\Quick Launch\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\Accessories\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1705699165-553239100-4129523827-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\Accessibility\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\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\Music\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\Desktop\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\Windows\Libraries\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\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\Windows\SendTo\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\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\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-1-5-21-1705699165-553239100-4129523827-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 224 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 64 svchost.exe -
Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe 64 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 64 svchost.exe Token: SeBackupPrivilege 1416 vssvc.exe Token: SeRestorePrivilege 1416 vssvc.exe Token: SeAuditPrivilege 1416 vssvc.exe Token: SeIncreaseQuotaPrivilege 2068 WMIC.exe Token: SeSecurityPrivilege 2068 WMIC.exe Token: SeTakeOwnershipPrivilege 2068 WMIC.exe Token: SeLoadDriverPrivilege 2068 WMIC.exe Token: SeSystemProfilePrivilege 2068 WMIC.exe Token: SeSystemtimePrivilege 2068 WMIC.exe Token: SeProfSingleProcessPrivilege 2068 WMIC.exe Token: SeIncBasePriorityPrivilege 2068 WMIC.exe Token: SeCreatePagefilePrivilege 2068 WMIC.exe Token: SeBackupPrivilege 2068 WMIC.exe Token: SeRestorePrivilege 2068 WMIC.exe Token: SeShutdownPrivilege 2068 WMIC.exe Token: SeDebugPrivilege 2068 WMIC.exe Token: SeSystemEnvironmentPrivilege 2068 WMIC.exe Token: SeRemoteShutdownPrivilege 2068 WMIC.exe Token: SeUndockPrivilege 2068 WMIC.exe Token: SeManageVolumePrivilege 2068 WMIC.exe Token: 33 2068 WMIC.exe Token: 34 2068 WMIC.exe Token: 35 2068 WMIC.exe Token: 36 2068 WMIC.exe Token: SeIncreaseQuotaPrivilege 2068 WMIC.exe Token: SeSecurityPrivilege 2068 WMIC.exe Token: SeTakeOwnershipPrivilege 2068 WMIC.exe Token: SeLoadDriverPrivilege 2068 WMIC.exe Token: SeSystemProfilePrivilege 2068 WMIC.exe Token: SeSystemtimePrivilege 2068 WMIC.exe Token: SeProfSingleProcessPrivilege 2068 WMIC.exe Token: SeIncBasePriorityPrivilege 2068 WMIC.exe Token: SeCreatePagefilePrivilege 2068 WMIC.exe Token: SeBackupPrivilege 2068 WMIC.exe Token: SeRestorePrivilege 2068 WMIC.exe Token: SeShutdownPrivilege 2068 WMIC.exe Token: SeDebugPrivilege 2068 WMIC.exe Token: SeSystemEnvironmentPrivilege 2068 WMIC.exe Token: SeRemoteShutdownPrivilege 2068 WMIC.exe Token: SeUndockPrivilege 2068 WMIC.exe Token: SeManageVolumePrivilege 2068 WMIC.exe Token: 33 2068 WMIC.exe Token: 34 2068 WMIC.exe Token: 35 2068 WMIC.exe Token: 36 2068 WMIC.exe Token: SeBackupPrivilege 432 wbengine.exe Token: SeRestorePrivilege 432 wbengine.exe Token: SeSecurityPrivilege 432 wbengine.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 2812 wrote to memory of 64 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 87 PID 2812 wrote to memory of 64 2812 2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe 87 PID 64 wrote to memory of 508 64 svchost.exe 93 PID 64 wrote to memory of 508 64 svchost.exe 93 PID 508 wrote to memory of 4784 508 cmd.exe 96 PID 508 wrote to memory of 4784 508 cmd.exe 96 PID 508 wrote to memory of 2068 508 cmd.exe 99 PID 508 wrote to memory of 2068 508 cmd.exe 99 PID 64 wrote to memory of 2192 64 svchost.exe 100 PID 64 wrote to memory of 2192 64 svchost.exe 100 PID 64 wrote to memory of 4584 64 svchost.exe 104 PID 64 wrote to memory of 4584 64 svchost.exe 104 PID 4584 wrote to memory of 4856 4584 cmd.exe 106 PID 4584 wrote to memory of 4856 4584 cmd.exe 106 PID 64 wrote to memory of 224 64 svchost.exe 110 PID 64 wrote to memory of 224 64 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_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-23_9821b5be1e0ad7419d26f80c8b12ac1c_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2812 -
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:64 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:508 -
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:2068
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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⤵PID:2192
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4812
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4388
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4584 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4856
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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:224
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1416
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:432
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2700
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:2800
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD59821b5be1e0ad7419d26f80c8b12ac1c
SHA192c2a201d959deef0a98a3c2bee4fda3d86a4dfa
SHA25660d4ab9baefce0627e9d4ac8bd3f6efa8a1b3e9c36a32f6a84266a4d6d01654d
SHA5127f934d4b613d272d4952ca65e5182825a7fc3a17ad3e222d93389e1c6aed4e8088f0c4c5b2e3cce5fadf9661a3542916e0d412ac9e202ff92f907073359dcd0d
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740