Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
26-05-2024 02:44
Behavioral task
behavioral1
Sample
2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe
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Size
22KB
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MD5
d4669c94a097854dce4884b30969263a
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SHA1
beaef0dae9832bc5f4406140629d952d90bcad3c
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SHA256
64d0b1b9e3bcae016bb2a2cbf1ba0fe05a0f1e3853bda1dd58adda14a5cf2544
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SHA512
a7f51b4100c29beac1eef99b88dcbac2fc5e961b7e9da7ef2fc754db5bf1d50c0eb9e1f6a6e72869a782fe62335178ae09f39857517a1cd9f1d83b9bebeed523
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SSDEEP
384:23MLWHn3kIk/IqoIApcXsQP8GdtKXRIJRr91CzJb6kem:6n3kIMLApcNPfKXRARr9iJbpem
Malware Config
Extracted
C:\Users\Admin\Desktop\howtouninstall.txt
chaos
12mNn7mCFptRZynEfLA2mEowHYsPYhYVKZ
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
Processes:
resource yara_rule behavioral2/memory/220-1-0x0000000000C50000-0x0000000000C5C000-memory.dmp family_chaos C:\Users\Admin\AppData\Roaming\svchost.exe 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
Processes:
resource yara_rule behavioral2/memory/220-1-0x0000000000C50000-0x0000000000C5C000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware C:\Users\Admin\AppData\Roaming\svchost.exe INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
Processes:
bcdedit.exebcdedit.exepid process 716 bcdedit.exe 1780 bcdedit.exe -
Processes:
wbadmin.exepid process 3600 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exesvchost.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
Processes:
svchost.exedescription 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\howtouninstall.txt svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 2900 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
Processes:
svchost.exedescription ioc process File opened for modification C:\Users\Admin\Searches\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 C:\Users\Admin\Music\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\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\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\Public\Pictures\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\Pictures\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\Accessibility\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\AccountPictures\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-4018855536-2201274732-320770143-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Saved Games\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\Desktop\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.
Processes:
vds.exedescription ioc process 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 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 448 vssadmin.exe -
Modifies registry class 1 IoCs
Processes:
svchost.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 1200 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid process 2900 svchost.exe -
Suspicious behavior: EnumeratesProcesses 47 IoCs
Processes:
2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exesvchost.exepid process 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe 2900 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
Processes:
2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2900 svchost.exe Token: SeBackupPrivilege 3784 vssvc.exe Token: SeRestorePrivilege 3784 vssvc.exe Token: SeAuditPrivilege 3784 vssvc.exe Token: SeIncreaseQuotaPrivilege 3680 WMIC.exe Token: SeSecurityPrivilege 3680 WMIC.exe Token: SeTakeOwnershipPrivilege 3680 WMIC.exe Token: SeLoadDriverPrivilege 3680 WMIC.exe Token: SeSystemProfilePrivilege 3680 WMIC.exe Token: SeSystemtimePrivilege 3680 WMIC.exe Token: SeProfSingleProcessPrivilege 3680 WMIC.exe Token: SeIncBasePriorityPrivilege 3680 WMIC.exe Token: SeCreatePagefilePrivilege 3680 WMIC.exe Token: SeBackupPrivilege 3680 WMIC.exe Token: SeRestorePrivilege 3680 WMIC.exe Token: SeShutdownPrivilege 3680 WMIC.exe Token: SeDebugPrivilege 3680 WMIC.exe Token: SeSystemEnvironmentPrivilege 3680 WMIC.exe Token: SeRemoteShutdownPrivilege 3680 WMIC.exe Token: SeUndockPrivilege 3680 WMIC.exe Token: SeManageVolumePrivilege 3680 WMIC.exe Token: 33 3680 WMIC.exe Token: 34 3680 WMIC.exe Token: 35 3680 WMIC.exe Token: 36 3680 WMIC.exe Token: SeIncreaseQuotaPrivilege 3680 WMIC.exe Token: SeSecurityPrivilege 3680 WMIC.exe Token: SeTakeOwnershipPrivilege 3680 WMIC.exe Token: SeLoadDriverPrivilege 3680 WMIC.exe Token: SeSystemProfilePrivilege 3680 WMIC.exe Token: SeSystemtimePrivilege 3680 WMIC.exe Token: SeProfSingleProcessPrivilege 3680 WMIC.exe Token: SeIncBasePriorityPrivilege 3680 WMIC.exe Token: SeCreatePagefilePrivilege 3680 WMIC.exe Token: SeBackupPrivilege 3680 WMIC.exe Token: SeRestorePrivilege 3680 WMIC.exe Token: SeShutdownPrivilege 3680 WMIC.exe Token: SeDebugPrivilege 3680 WMIC.exe Token: SeSystemEnvironmentPrivilege 3680 WMIC.exe Token: SeRemoteShutdownPrivilege 3680 WMIC.exe Token: SeUndockPrivilege 3680 WMIC.exe Token: SeManageVolumePrivilege 3680 WMIC.exe Token: 33 3680 WMIC.exe Token: 34 3680 WMIC.exe Token: 35 3680 WMIC.exe Token: 36 3680 WMIC.exe Token: SeBackupPrivilege 2732 wbengine.exe Token: SeRestorePrivilege 2732 wbengine.exe Token: SeSecurityPrivilege 2732 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 220 wrote to memory of 2900 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe svchost.exe PID 220 wrote to memory of 2900 220 2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe svchost.exe PID 2900 wrote to memory of 3628 2900 svchost.exe cmd.exe PID 2900 wrote to memory of 3628 2900 svchost.exe cmd.exe PID 3628 wrote to memory of 448 3628 cmd.exe vssadmin.exe PID 3628 wrote to memory of 448 3628 cmd.exe vssadmin.exe PID 3628 wrote to memory of 3680 3628 cmd.exe WMIC.exe PID 3628 wrote to memory of 3680 3628 cmd.exe WMIC.exe PID 2900 wrote to memory of 4480 2900 svchost.exe cmd.exe PID 2900 wrote to memory of 4480 2900 svchost.exe cmd.exe PID 4480 wrote to memory of 716 4480 cmd.exe bcdedit.exe PID 4480 wrote to memory of 716 4480 cmd.exe bcdedit.exe PID 4480 wrote to memory of 1780 4480 cmd.exe bcdedit.exe PID 4480 wrote to memory of 1780 4480 cmd.exe bcdedit.exe PID 2900 wrote to memory of 4332 2900 svchost.exe cmd.exe PID 2900 wrote to memory of 4332 2900 svchost.exe cmd.exe PID 4332 wrote to memory of 3600 4332 cmd.exe wbadmin.exe PID 4332 wrote to memory of 3600 4332 cmd.exe wbadmin.exe PID 2900 wrote to memory of 1200 2900 svchost.exe NOTEPAD.EXE PID 2900 wrote to memory of 1200 2900 svchost.exe NOTEPAD.EXE -
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\2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
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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
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\howtouninstall.txt3⤵
- Opens file in notepad (likely ransom note)
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\svchost.exeFilesize
22KB
MD5d4669c94a097854dce4884b30969263a
SHA1beaef0dae9832bc5f4406140629d952d90bcad3c
SHA25664d0b1b9e3bcae016bb2a2cbf1ba0fe05a0f1e3853bda1dd58adda14a5cf2544
SHA512a7f51b4100c29beac1eef99b88dcbac2fc5e961b7e9da7ef2fc754db5bf1d50c0eb9e1f6a6e72869a782fe62335178ae09f39857517a1cd9f1d83b9bebeed523
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C:\Users\Admin\Desktop\howtouninstall.txtFilesize
955B
MD579f37ebbd9fad4e2219563953c94d152
SHA187a362ff8fe4240d4031366277ac2d8a3f51c184
SHA256bdba644092aa5efb03249e8306d4117cb615a286acf46ccfdd382f867f3d56b6
SHA512da3512e9e77f6f088394fa5a6153b38d0bd7dab87f027023b9718b3e11d915f7a497e1b491f699eeadbbbb2a8f105d111b6898b3b514986221ba551614fc2fd7
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memory/220-0-0x00007FFAEE693000-0x00007FFAEE695000-memory.dmpFilesize
8KB
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memory/220-1-0x0000000000C50000-0x0000000000C5C000-memory.dmpFilesize
48KB
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memory/2900-14-0x00007FFAEE690000-0x00007FFAEF151000-memory.dmpFilesize
10.8MB
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memory/2900-70-0x00007FFAEE690000-0x00007FFAEF151000-memory.dmpFilesize
10.8MB