Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
15-05-2024 21:35
Behavioral task
behavioral1
Sample
2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
8211488f6520148d312e6b498aa4ff9d
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SHA1
99c95c9e010d2e3d512f7c68ff482e1e80262c2b
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SHA256
95091becfe2ce086fb66894624637c844ea89fb0076aec5d131c4b5e4f95edfd
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SHA512
36060945aceaeef7a084c0f91518daafa7d18361bda51b53ca3ebc09f83b3dc32e626b9216acc755e7b23fa8f34beec3c75ac6436562a678b3b32e0e72d0e4cd
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SSDEEP
384:S83Mg/bqo2PO0be6UpeAN4+X0Z/NJYDr91CO1pb5oevY:1qo2fdUpeg4+kR7YDr9Zpbeeg
Malware Config
Extracted
C:\Users\Admin\Documents\README.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/1808-0-0x00000000000E0000-0x00000000000EC000-memory.dmp family_chaos behavioral2/files/0x00060000000006cf-6.dat family_chaos -
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 2 IoCs
resource yara_rule behavioral2/memory/1808-0-0x00000000000E0000-0x00000000000EC000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x00060000000006cf-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 3596 bcdedit.exe 2152 bcdedit.exe -
Renames multiple (187) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 4944 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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\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\README.txt svchost.exe 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 -
Executes dropped EXE 1 IoCs
pid Process 1532 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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\AppData\Roaming\Microsoft\Windows\Recent\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\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\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\Searches\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\SendTo\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3571316656-3665257725-2415531812-1000\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\Pictures\Camera Roll\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\Start Menu\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\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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_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 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1520 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 672 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1532 svchost.exe -
Suspicious behavior: EnumeratesProcesses 47 IoCs
pid Process 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe 1532 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 1532 svchost.exe Token: SeBackupPrivilege 2232 vssvc.exe Token: SeRestorePrivilege 2232 vssvc.exe Token: SeAuditPrivilege 2232 vssvc.exe Token: SeIncreaseQuotaPrivilege 1192 WMIC.exe Token: SeSecurityPrivilege 1192 WMIC.exe Token: SeTakeOwnershipPrivilege 1192 WMIC.exe Token: SeLoadDriverPrivilege 1192 WMIC.exe Token: SeSystemProfilePrivilege 1192 WMIC.exe Token: SeSystemtimePrivilege 1192 WMIC.exe Token: SeProfSingleProcessPrivilege 1192 WMIC.exe Token: SeIncBasePriorityPrivilege 1192 WMIC.exe Token: SeCreatePagefilePrivilege 1192 WMIC.exe Token: SeBackupPrivilege 1192 WMIC.exe Token: SeRestorePrivilege 1192 WMIC.exe Token: SeShutdownPrivilege 1192 WMIC.exe Token: SeDebugPrivilege 1192 WMIC.exe Token: SeSystemEnvironmentPrivilege 1192 WMIC.exe Token: SeRemoteShutdownPrivilege 1192 WMIC.exe Token: SeUndockPrivilege 1192 WMIC.exe Token: SeManageVolumePrivilege 1192 WMIC.exe Token: 33 1192 WMIC.exe Token: 34 1192 WMIC.exe Token: 35 1192 WMIC.exe Token: 36 1192 WMIC.exe Token: SeIncreaseQuotaPrivilege 1192 WMIC.exe Token: SeSecurityPrivilege 1192 WMIC.exe Token: SeTakeOwnershipPrivilege 1192 WMIC.exe Token: SeLoadDriverPrivilege 1192 WMIC.exe Token: SeSystemProfilePrivilege 1192 WMIC.exe Token: SeSystemtimePrivilege 1192 WMIC.exe Token: SeProfSingleProcessPrivilege 1192 WMIC.exe Token: SeIncBasePriorityPrivilege 1192 WMIC.exe Token: SeCreatePagefilePrivilege 1192 WMIC.exe Token: SeBackupPrivilege 1192 WMIC.exe Token: SeRestorePrivilege 1192 WMIC.exe Token: SeShutdownPrivilege 1192 WMIC.exe Token: SeDebugPrivilege 1192 WMIC.exe Token: SeSystemEnvironmentPrivilege 1192 WMIC.exe Token: SeRemoteShutdownPrivilege 1192 WMIC.exe Token: SeUndockPrivilege 1192 WMIC.exe Token: SeManageVolumePrivilege 1192 WMIC.exe Token: 33 1192 WMIC.exe Token: 34 1192 WMIC.exe Token: 35 1192 WMIC.exe Token: 36 1192 WMIC.exe Token: SeBackupPrivilege 1784 wbengine.exe Token: SeRestorePrivilege 1784 wbengine.exe Token: SeSecurityPrivilege 1784 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 1808 wrote to memory of 1532 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 87 PID 1808 wrote to memory of 1532 1808 2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe 87 PID 1532 wrote to memory of 2360 1532 svchost.exe 93 PID 1532 wrote to memory of 2360 1532 svchost.exe 93 PID 2360 wrote to memory of 1520 2360 cmd.exe 95 PID 2360 wrote to memory of 1520 2360 cmd.exe 95 PID 2360 wrote to memory of 1192 2360 cmd.exe 98 PID 2360 wrote to memory of 1192 2360 cmd.exe 98 PID 1532 wrote to memory of 2216 1532 svchost.exe 99 PID 1532 wrote to memory of 2216 1532 svchost.exe 99 PID 2216 wrote to memory of 3596 2216 cmd.exe 101 PID 2216 wrote to memory of 3596 2216 cmd.exe 101 PID 2216 wrote to memory of 2152 2216 cmd.exe 102 PID 2216 wrote to memory of 2152 2216 cmd.exe 102 PID 1532 wrote to memory of 1980 1532 svchost.exe 103 PID 1532 wrote to memory of 1980 1532 svchost.exe 103 PID 1980 wrote to memory of 4944 1980 cmd.exe 105 PID 1980 wrote to memory of 4944 1980 cmd.exe 105 PID 1532 wrote to memory of 672 1532 svchost.exe 111 PID 1532 wrote to memory of 672 1532 svchost.exe 111 -
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\2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-15_8211488f6520148d312e6b498aa4ff9d_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1808 -
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:1532 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2360 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1520
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1192
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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:2216 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3596
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2152
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1980 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4944
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt3⤵
- Opens file in notepad (likely ransom note)
PID:672
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2232
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1784
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1152
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4008
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
23KB
MD58211488f6520148d312e6b498aa4ff9d
SHA199c95c9e010d2e3d512f7c68ff482e1e80262c2b
SHA25695091becfe2ce086fb66894624637c844ea89fb0076aec5d131c4b5e4f95edfd
SHA51236060945aceaeef7a084c0f91518daafa7d18361bda51b53ca3ebc09f83b3dc32e626b9216acc755e7b23fa8f34beec3c75ac6436562a678b3b32e0e72d0e4cd
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740