Analysis
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max time kernel
92s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
13-12-2024 04:25
Behavioral task
behavioral1
Sample
2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
ee3cf7167280e28f0771ffedfb631a8c
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SHA1
d8f54832a4eb9157bc11fb2ec8c05b96fee4d52f
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SHA256
b66cf029d1671b246d1a4ccd86793f587bf8e4237460b892b8009e36a7bf0e68
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SHA512
f4df591404f3819457c86db32473610264105f0884fa6b99c904cee57f123ee6d58bb2740587df8130b202f1b8ee47271f7dabe8849c01fd72e71f1cdd882985
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SSDEEP
384:R3Mg/bqo2TdYJB7RpfDKw/+98uJYr91CkT7kFWqe+C:Tqo2JoRpfDN/NyYr91kFHex
Malware Config
Extracted
C:\Users\Admin\Documents\LEIA-ME.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/2444-1-0x0000000000580000-0x000000000058C000-memory.dmp family_chaos behavioral2/files/0x000c000000023b8d-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 932 bcdedit.exe 4508 bcdedit.exe -
pid Process 3296 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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\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\LEIA-ME.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2184 svchost.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\Music\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\Start Menu\Programs\Administrative Tools\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\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 C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\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\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\Videos\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\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\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3350944739-639801879-157714471-1000\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Maintenance\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 4656 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings svchost.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2184 svchost.exe -
Suspicious behavior: EnumeratesProcesses 47 IoCs
pid Process 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe 2184 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2184 svchost.exe Token: SeBackupPrivilege 1080 vssvc.exe Token: SeRestorePrivilege 1080 vssvc.exe Token: SeAuditPrivilege 1080 vssvc.exe Token: SeIncreaseQuotaPrivilege 4368 WMIC.exe Token: SeSecurityPrivilege 4368 WMIC.exe Token: SeTakeOwnershipPrivilege 4368 WMIC.exe Token: SeLoadDriverPrivilege 4368 WMIC.exe Token: SeSystemProfilePrivilege 4368 WMIC.exe Token: SeSystemtimePrivilege 4368 WMIC.exe Token: SeProfSingleProcessPrivilege 4368 WMIC.exe Token: SeIncBasePriorityPrivilege 4368 WMIC.exe Token: SeCreatePagefilePrivilege 4368 WMIC.exe Token: SeBackupPrivilege 4368 WMIC.exe Token: SeRestorePrivilege 4368 WMIC.exe Token: SeShutdownPrivilege 4368 WMIC.exe Token: SeDebugPrivilege 4368 WMIC.exe Token: SeSystemEnvironmentPrivilege 4368 WMIC.exe Token: SeRemoteShutdownPrivilege 4368 WMIC.exe Token: SeUndockPrivilege 4368 WMIC.exe Token: SeManageVolumePrivilege 4368 WMIC.exe Token: 33 4368 WMIC.exe Token: 34 4368 WMIC.exe Token: 35 4368 WMIC.exe Token: 36 4368 WMIC.exe Token: SeIncreaseQuotaPrivilege 4368 WMIC.exe Token: SeSecurityPrivilege 4368 WMIC.exe Token: SeTakeOwnershipPrivilege 4368 WMIC.exe Token: SeLoadDriverPrivilege 4368 WMIC.exe Token: SeSystemProfilePrivilege 4368 WMIC.exe Token: SeSystemtimePrivilege 4368 WMIC.exe Token: SeProfSingleProcessPrivilege 4368 WMIC.exe Token: SeIncBasePriorityPrivilege 4368 WMIC.exe Token: SeCreatePagefilePrivilege 4368 WMIC.exe Token: SeBackupPrivilege 4368 WMIC.exe Token: SeRestorePrivilege 4368 WMIC.exe Token: SeShutdownPrivilege 4368 WMIC.exe Token: SeDebugPrivilege 4368 WMIC.exe Token: SeSystemEnvironmentPrivilege 4368 WMIC.exe Token: SeRemoteShutdownPrivilege 4368 WMIC.exe Token: SeUndockPrivilege 4368 WMIC.exe Token: SeManageVolumePrivilege 4368 WMIC.exe Token: 33 4368 WMIC.exe Token: 34 4368 WMIC.exe Token: 35 4368 WMIC.exe Token: 36 4368 WMIC.exe Token: SeBackupPrivilege 1848 wbengine.exe Token: SeRestorePrivilege 1848 wbengine.exe Token: SeSecurityPrivilege 1848 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2444 wrote to memory of 2184 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 83 PID 2444 wrote to memory of 2184 2444 2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe 83 PID 2184 wrote to memory of 1896 2184 svchost.exe 91 PID 2184 wrote to memory of 1896 2184 svchost.exe 91 PID 1896 wrote to memory of 4656 1896 cmd.exe 93 PID 1896 wrote to memory of 4656 1896 cmd.exe 93 PID 1896 wrote to memory of 4368 1896 cmd.exe 97 PID 1896 wrote to memory of 4368 1896 cmd.exe 97 PID 2184 wrote to memory of 2324 2184 svchost.exe 98 PID 2184 wrote to memory of 2324 2184 svchost.exe 98 PID 2324 wrote to memory of 932 2324 cmd.exe 101 PID 2324 wrote to memory of 932 2324 cmd.exe 101 PID 2324 wrote to memory of 4508 2324 cmd.exe 103 PID 2324 wrote to memory of 4508 2324 cmd.exe 103 PID 2184 wrote to memory of 5048 2184 svchost.exe 104 PID 2184 wrote to memory of 5048 2184 svchost.exe 104 PID 5048 wrote to memory of 3296 5048 cmd.exe 106 PID 5048 wrote to memory of 3296 5048 cmd.exe 106 PID 2184 wrote to memory of 1820 2184 svchost.exe 111 PID 2184 wrote to memory of 1820 2184 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\2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-13_ee3cf7167280e28f0771ffedfb631a8c_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2444 -
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:2184 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1896 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4656
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4368
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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:2324 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:932
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4508
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:5048 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3296
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\LEIA-ME.txt3⤵PID:1820
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1080
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1848
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3860
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:2332
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD5ee3cf7167280e28f0771ffedfb631a8c
SHA1d8f54832a4eb9157bc11fb2ec8c05b96fee4d52f
SHA256b66cf029d1671b246d1a4ccd86793f587bf8e4237460b892b8009e36a7bf0e68
SHA512f4df591404f3819457c86db32473610264105f0884fa6b99c904cee57f123ee6d58bb2740587df8130b202f1b8ee47271f7dabe8849c01fd72e71f1cdd882985
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Filesize
868B
MD5db678c9756d9e4d1fc912a7b9b5aad2f
SHA13e260e5ed4e1ef0e51c910a4e0b94c62a3a24521
SHA256da568b7fa0fc05e7c153e03db837143f4f327228492b9aa9a1f1229abdd878d0
SHA512e8d24549ae2e33655d64f8fc4d689ccea0d8ed28a09bf57a0527d21d8e1fccb16af5ec5cd2bed38b6d21fc1dd644f9ee413d62c9c96414198d31130b654064f8