Analysis
-
max time kernel
142s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
27-04-2024 21:22
Behavioral task
behavioral1
Sample
2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240226-en
General
-
Target
2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe
-
Size
23KB
-
MD5
0d7b0ecdae66956464221424a93b5011
-
SHA1
fb2abb0a1942ed94484aac6b8d5319cd334dc9d1
-
SHA256
2e3e41d440a9bfcb4351976c517a980dc3aea265104142283d71f212ffb7af48
-
SHA512
ca31598e7a4c9c08d85ee4d3c7e851f33eb06084fd4d7bf4cbdf5556c23720cdf9c190526db00f4d01ab2a72cee47e292df035c4e230ec4e025078d702e3a576
-
SSDEEP
384:l3Mg/bqo2mcxtivp+4ZobBJMr91C6Hxb5FeO:fqo2ptMpjqvMr9lxbTeO
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
chaos
Signatures
-
Chaos
Ransomware family first seen in June 2021.
-
Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/4848-0-0x0000000000660000-0x000000000066C000-memory.dmp family_chaos behavioral2/files/0x000800000002325a-6.dat family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Detects command variations typically used by ransomware 2 IoCs
resource yara_rule behavioral2/memory/4848-0-0x0000000000660000-0x000000000066C000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x000800000002325a-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 1088 bcdedit.exe 4932 bcdedit.exe -
pid Process 4696 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\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 4960 svchost.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Documents\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\Admin\Pictures\Saved Pictures\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\Maintenance\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\Administrative 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\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\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\Saved Games\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\Public\Music\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3808065738-1666277613-1125846146-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\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\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\Internet Explorer\Quick Launch\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\Accessories\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).
-
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_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_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 1856 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1336 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4960 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe 4960 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 4960 svchost.exe Token: SeBackupPrivilege 4780 vssvc.exe Token: SeRestorePrivilege 4780 vssvc.exe Token: SeAuditPrivilege 4780 vssvc.exe Token: SeIncreaseQuotaPrivilege 4652 WMIC.exe Token: SeSecurityPrivilege 4652 WMIC.exe Token: SeTakeOwnershipPrivilege 4652 WMIC.exe Token: SeLoadDriverPrivilege 4652 WMIC.exe Token: SeSystemProfilePrivilege 4652 WMIC.exe Token: SeSystemtimePrivilege 4652 WMIC.exe Token: SeProfSingleProcessPrivilege 4652 WMIC.exe Token: SeIncBasePriorityPrivilege 4652 WMIC.exe Token: SeCreatePagefilePrivilege 4652 WMIC.exe Token: SeBackupPrivilege 4652 WMIC.exe Token: SeRestorePrivilege 4652 WMIC.exe Token: SeShutdownPrivilege 4652 WMIC.exe Token: SeDebugPrivilege 4652 WMIC.exe Token: SeSystemEnvironmentPrivilege 4652 WMIC.exe Token: SeRemoteShutdownPrivilege 4652 WMIC.exe Token: SeUndockPrivilege 4652 WMIC.exe Token: SeManageVolumePrivilege 4652 WMIC.exe Token: 33 4652 WMIC.exe Token: 34 4652 WMIC.exe Token: 35 4652 WMIC.exe Token: 36 4652 WMIC.exe Token: SeIncreaseQuotaPrivilege 4652 WMIC.exe Token: SeSecurityPrivilege 4652 WMIC.exe Token: SeTakeOwnershipPrivilege 4652 WMIC.exe Token: SeLoadDriverPrivilege 4652 WMIC.exe Token: SeSystemProfilePrivilege 4652 WMIC.exe Token: SeSystemtimePrivilege 4652 WMIC.exe Token: SeProfSingleProcessPrivilege 4652 WMIC.exe Token: SeIncBasePriorityPrivilege 4652 WMIC.exe Token: SeCreatePagefilePrivilege 4652 WMIC.exe Token: SeBackupPrivilege 4652 WMIC.exe Token: SeRestorePrivilege 4652 WMIC.exe Token: SeShutdownPrivilege 4652 WMIC.exe Token: SeDebugPrivilege 4652 WMIC.exe Token: SeSystemEnvironmentPrivilege 4652 WMIC.exe Token: SeRemoteShutdownPrivilege 4652 WMIC.exe Token: SeUndockPrivilege 4652 WMIC.exe Token: SeManageVolumePrivilege 4652 WMIC.exe Token: 33 4652 WMIC.exe Token: 34 4652 WMIC.exe Token: 35 4652 WMIC.exe Token: 36 4652 WMIC.exe Token: SeBackupPrivilege 3876 wbengine.exe Token: SeRestorePrivilege 3876 wbengine.exe Token: SeSecurityPrivilege 3876 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4848 wrote to memory of 4960 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 90 PID 4848 wrote to memory of 4960 4848 2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe 90 PID 4960 wrote to memory of 4456 4960 svchost.exe 93 PID 4960 wrote to memory of 4456 4960 svchost.exe 93 PID 4456 wrote to memory of 1856 4456 cmd.exe 95 PID 4456 wrote to memory of 1856 4456 cmd.exe 95 PID 4456 wrote to memory of 4652 4456 cmd.exe 100 PID 4456 wrote to memory of 4652 4456 cmd.exe 100 PID 4960 wrote to memory of 4744 4960 svchost.exe 102 PID 4960 wrote to memory of 4744 4960 svchost.exe 102 PID 4744 wrote to memory of 1088 4744 cmd.exe 104 PID 4744 wrote to memory of 1088 4744 cmd.exe 104 PID 4744 wrote to memory of 4932 4744 cmd.exe 106 PID 4744 wrote to memory of 4932 4744 cmd.exe 106 PID 4960 wrote to memory of 4016 4960 svchost.exe 107 PID 4960 wrote to memory of 4016 4960 svchost.exe 107 PID 4016 wrote to memory of 4696 4016 cmd.exe 109 PID 4016 wrote to memory of 4696 4016 cmd.exe 109 PID 4960 wrote to memory of 1336 4960 svchost.exe 114 PID 4960 wrote to memory of 1336 4960 svchost.exe 114 -
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.
-
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-27_0d7b0ecdae66956464221424a93b5011_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4848 -
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:4960 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4456 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1856
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4652
-
-
-
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:4744 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1088
-
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4932
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4016 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4696
-
-
-
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:1336
-
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4780
-
C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3876
-
C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1724
-
C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4008
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=760 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:81⤵PID:1088
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
23KB
MD50d7b0ecdae66956464221424a93b5011
SHA1fb2abb0a1942ed94484aac6b8d5319cd334dc9d1
SHA2562e3e41d440a9bfcb4351976c517a980dc3aea265104142283d71f212ffb7af48
SHA512ca31598e7a4c9c08d85ee4d3c7e851f33eb06084fd4d7bf4cbdf5556c23720cdf9c190526db00f4d01ab2a72cee47e292df035c4e230ec4e025078d702e3a576
-
Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740