Analysis
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max time kernel
134s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
24-08-2024 14:46
Behavioral task
behavioral1
Sample
2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe
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Size
99KB
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MD5
4b51f50f9548a35fe71aa49b4310f9a5
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SHA1
87ee5b9c93e33dbfeb64f253d00d45110c1f768e
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SHA256
32cd9af5957086730ab43764925ef48398513fd17bf010f882cd5ed6746d29d5
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SHA512
bca7f5a1bb4619adc423a431f7d4e0d9505b32e866dd0e8cc9e929cc7440da8c284da2691eb75c4f0f04fec4074e04f5e6cf259bd36cd8b7f45d3e8d6ba17708
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SSDEEP
384:5kMg/bqoymcxtinWcGZvD7FJFr91C41r72sWmIxb5MeC:eqoyptoWcsjFr9T1rSsXIxbaeC
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/100-1-0x0000000000B50000-0x0000000000B72000-memory.dmp family_chaos behavioral2/files/0x000600000001e764-6.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 3448 bcdedit.exe 2956 bcdedit.exe -
pid Process 4940 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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation svchost.exe Key value queried \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.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 1020 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\Favorites\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\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\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\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2412658365-3084825385-3340777666-1000\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\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\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\Administrative 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\AppData\Roaming\Microsoft\Windows\Recent\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\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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 -
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 2164 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2720 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1020 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe 1020 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe Token: SeDebugPrivilege 1020 svchost.exe Token: SeBackupPrivilege 368 vssvc.exe Token: SeRestorePrivilege 368 vssvc.exe Token: SeAuditPrivilege 368 vssvc.exe Token: SeIncreaseQuotaPrivilege 4460 WMIC.exe Token: SeSecurityPrivilege 4460 WMIC.exe Token: SeTakeOwnershipPrivilege 4460 WMIC.exe Token: SeLoadDriverPrivilege 4460 WMIC.exe Token: SeSystemProfilePrivilege 4460 WMIC.exe Token: SeSystemtimePrivilege 4460 WMIC.exe Token: SeProfSingleProcessPrivilege 4460 WMIC.exe Token: SeIncBasePriorityPrivilege 4460 WMIC.exe Token: SeCreatePagefilePrivilege 4460 WMIC.exe Token: SeBackupPrivilege 4460 WMIC.exe Token: SeRestorePrivilege 4460 WMIC.exe Token: SeShutdownPrivilege 4460 WMIC.exe Token: SeDebugPrivilege 4460 WMIC.exe Token: SeSystemEnvironmentPrivilege 4460 WMIC.exe Token: SeRemoteShutdownPrivilege 4460 WMIC.exe Token: SeUndockPrivilege 4460 WMIC.exe Token: SeManageVolumePrivilege 4460 WMIC.exe Token: 33 4460 WMIC.exe Token: 34 4460 WMIC.exe Token: 35 4460 WMIC.exe Token: 36 4460 WMIC.exe Token: SeIncreaseQuotaPrivilege 4460 WMIC.exe Token: SeSecurityPrivilege 4460 WMIC.exe Token: SeTakeOwnershipPrivilege 4460 WMIC.exe Token: SeLoadDriverPrivilege 4460 WMIC.exe Token: SeSystemProfilePrivilege 4460 WMIC.exe Token: SeSystemtimePrivilege 4460 WMIC.exe Token: SeProfSingleProcessPrivilege 4460 WMIC.exe Token: SeIncBasePriorityPrivilege 4460 WMIC.exe Token: SeCreatePagefilePrivilege 4460 WMIC.exe Token: SeBackupPrivilege 4460 WMIC.exe Token: SeRestorePrivilege 4460 WMIC.exe Token: SeShutdownPrivilege 4460 WMIC.exe Token: SeDebugPrivilege 4460 WMIC.exe Token: SeSystemEnvironmentPrivilege 4460 WMIC.exe Token: SeRemoteShutdownPrivilege 4460 WMIC.exe Token: SeUndockPrivilege 4460 WMIC.exe Token: SeManageVolumePrivilege 4460 WMIC.exe Token: 33 4460 WMIC.exe Token: 34 4460 WMIC.exe Token: 35 4460 WMIC.exe Token: 36 4460 WMIC.exe Token: SeBackupPrivilege 4808 wbengine.exe Token: SeRestorePrivilege 4808 wbengine.exe Token: SeSecurityPrivilege 4808 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 100 wrote to memory of 1020 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 89 PID 100 wrote to memory of 1020 100 2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe 89 PID 1020 wrote to memory of 4300 1020 svchost.exe 96 PID 1020 wrote to memory of 4300 1020 svchost.exe 96 PID 4300 wrote to memory of 2164 4300 cmd.exe 98 PID 4300 wrote to memory of 2164 4300 cmd.exe 98 PID 4300 wrote to memory of 4460 4300 cmd.exe 101 PID 4300 wrote to memory of 4460 4300 cmd.exe 101 PID 1020 wrote to memory of 3544 1020 svchost.exe 102 PID 1020 wrote to memory of 3544 1020 svchost.exe 102 PID 3544 wrote to memory of 3448 3544 cmd.exe 104 PID 3544 wrote to memory of 3448 3544 cmd.exe 104 PID 3544 wrote to memory of 2956 3544 cmd.exe 105 PID 3544 wrote to memory of 2956 3544 cmd.exe 105 PID 1020 wrote to memory of 4856 1020 svchost.exe 106 PID 1020 wrote to memory of 4856 1020 svchost.exe 106 PID 4856 wrote to memory of 4940 4856 cmd.exe 108 PID 4856 wrote to memory of 4940 4856 cmd.exe 108 PID 1020 wrote to memory of 2720 1020 svchost.exe 112 PID 1020 wrote to memory of 2720 1020 svchost.exe 112 -
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\2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-24_4b51f50f9548a35fe71aa49b4310f9a5_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:100 -
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:1020 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4300 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2164
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4460
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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:3544 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3448
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2956
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4856 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4940
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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:2720
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:368
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4808
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3944
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3664
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
99KB
MD54b51f50f9548a35fe71aa49b4310f9a5
SHA187ee5b9c93e33dbfeb64f253d00d45110c1f768e
SHA25632cd9af5957086730ab43764925ef48398513fd17bf010f882cd5ed6746d29d5
SHA512bca7f5a1bb4619adc423a431f7d4e0d9505b32e866dd0e8cc9e929cc7440da8c284da2691eb75c4f0f04fec4074e04f5e6cf259bd36cd8b7f45d3e8d6ba17708
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740