Analysis
-
max time kernel
62s -
max time network
51s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
29-04-2024 13:42
Behavioral task
behavioral1
Sample
2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240419-en
General
-
Target
2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe
-
Size
22KB
-
MD5
af51c1a91ec1249730d7b22979cc7c42
-
SHA1
5285d86451c719a0b0c0eb833ac227772488436d
-
SHA256
4710fb0bd1a6beb6f5b9cbb88a3141fbaffc54341f146570a7aac42df2938588
-
SHA512
b2fcd6dcefb8b672b5c9d27fcd08f0858fc46e58b2f73511d4aaa2fea63d68fb3ac0b5e8a0ea6375227fc5a26a8dfc48b116225397aea6b7b9165a348c3a55e0
-
SSDEEP
384:U3Mg/bqo2pOv0tpDnqp+Ao4+X0Z/zJHr91C8OWhneK:qqo2EDp+J4+kRVHr9hLJeK
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
Signatures
-
Chaos
Ransomware family first seen in June 2021.
-
Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/4280-0-0x00000000004A0000-0x00000000004AC000-memory.dmp family_chaos behavioral2/files/0x000b000000023b94-6.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/4280-0-0x00000000004A0000-0x00000000004AC000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x000b000000023b94-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 4652 bcdedit.exe 3820 bcdedit.exe -
pid Process 1224 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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\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 1456 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\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-877519540-908060166-1852957295-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\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\Favorites\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\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Windows\SendTo\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\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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_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 4800 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2944 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1456 svchost.exe -
Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe 1456 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 1456 svchost.exe Token: SeBackupPrivilege 4916 vssvc.exe Token: SeRestorePrivilege 4916 vssvc.exe Token: SeAuditPrivilege 4916 vssvc.exe Token: SeIncreaseQuotaPrivilege 4328 WMIC.exe Token: SeSecurityPrivilege 4328 WMIC.exe Token: SeTakeOwnershipPrivilege 4328 WMIC.exe Token: SeLoadDriverPrivilege 4328 WMIC.exe Token: SeSystemProfilePrivilege 4328 WMIC.exe Token: SeSystemtimePrivilege 4328 WMIC.exe Token: SeProfSingleProcessPrivilege 4328 WMIC.exe Token: SeIncBasePriorityPrivilege 4328 WMIC.exe Token: SeCreatePagefilePrivilege 4328 WMIC.exe Token: SeBackupPrivilege 4328 WMIC.exe Token: SeRestorePrivilege 4328 WMIC.exe Token: SeShutdownPrivilege 4328 WMIC.exe Token: SeDebugPrivilege 4328 WMIC.exe Token: SeSystemEnvironmentPrivilege 4328 WMIC.exe Token: SeRemoteShutdownPrivilege 4328 WMIC.exe Token: SeUndockPrivilege 4328 WMIC.exe Token: SeManageVolumePrivilege 4328 WMIC.exe Token: 33 4328 WMIC.exe Token: 34 4328 WMIC.exe Token: 35 4328 WMIC.exe Token: 36 4328 WMIC.exe Token: SeIncreaseQuotaPrivilege 4328 WMIC.exe Token: SeSecurityPrivilege 4328 WMIC.exe Token: SeTakeOwnershipPrivilege 4328 WMIC.exe Token: SeLoadDriverPrivilege 4328 WMIC.exe Token: SeSystemProfilePrivilege 4328 WMIC.exe Token: SeSystemtimePrivilege 4328 WMIC.exe Token: SeProfSingleProcessPrivilege 4328 WMIC.exe Token: SeIncBasePriorityPrivilege 4328 WMIC.exe Token: SeCreatePagefilePrivilege 4328 WMIC.exe Token: SeBackupPrivilege 4328 WMIC.exe Token: SeRestorePrivilege 4328 WMIC.exe Token: SeShutdownPrivilege 4328 WMIC.exe Token: SeDebugPrivilege 4328 WMIC.exe Token: SeSystemEnvironmentPrivilege 4328 WMIC.exe Token: SeRemoteShutdownPrivilege 4328 WMIC.exe Token: SeUndockPrivilege 4328 WMIC.exe Token: SeManageVolumePrivilege 4328 WMIC.exe Token: 33 4328 WMIC.exe Token: 34 4328 WMIC.exe Token: 35 4328 WMIC.exe Token: 36 4328 WMIC.exe Token: SeBackupPrivilege 1544 wbengine.exe Token: SeRestorePrivilege 1544 wbengine.exe Token: SeSecurityPrivilege 1544 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4280 wrote to memory of 1456 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 88 PID 4280 wrote to memory of 1456 4280 2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe 88 PID 1456 wrote to memory of 1476 1456 svchost.exe 90 PID 1456 wrote to memory of 1476 1456 svchost.exe 90 PID 1476 wrote to memory of 4800 1476 cmd.exe 92 PID 1476 wrote to memory of 4800 1476 cmd.exe 92 PID 1476 wrote to memory of 4328 1476 cmd.exe 95 PID 1476 wrote to memory of 4328 1476 cmd.exe 95 PID 1456 wrote to memory of 4088 1456 svchost.exe 97 PID 1456 wrote to memory of 4088 1456 svchost.exe 97 PID 4088 wrote to memory of 4652 4088 cmd.exe 99 PID 4088 wrote to memory of 4652 4088 cmd.exe 99 PID 4088 wrote to memory of 3820 4088 cmd.exe 100 PID 4088 wrote to memory of 3820 4088 cmd.exe 100 PID 1456 wrote to memory of 1932 1456 svchost.exe 101 PID 1456 wrote to memory of 1932 1456 svchost.exe 101 PID 1932 wrote to memory of 1224 1932 cmd.exe 103 PID 1932 wrote to memory of 1224 1932 cmd.exe 103 PID 1456 wrote to memory of 2944 1456 svchost.exe 107 PID 1456 wrote to memory of 2944 1456 svchost.exe 107 -
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\2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-29_af51c1a91ec1249730d7b22979cc7c42_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4280 -
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:1456 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1476 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4800
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4328
-
-
-
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:4088 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4652
-
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3820
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1932 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1224
-
-
-
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:2944
-
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4916
-
C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1544
-
C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3172
-
C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3136
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
22KB
MD5af51c1a91ec1249730d7b22979cc7c42
SHA15285d86451c719a0b0c0eb833ac227772488436d
SHA2564710fb0bd1a6beb6f5b9cbb88a3141fbaffc54341f146570a7aac42df2938588
SHA512b2fcd6dcefb8b672b5c9d27fcd08f0858fc46e58b2f73511d4aaa2fea63d68fb3ac0b5e8a0ea6375227fc5a26a8dfc48b116225397aea6b7b9165a348c3a55e0
-
Filesize
462B
MD59ef56b0438e82e07aa14fb9481d10b18
SHA1b4d069b4737d9f32d07618d83650f7c1ed3bf6eb
SHA256ae7ff3ea3c8870144b97cde602f5e84f8a365939cf127fafa38a5309f29b69d3
SHA512a7f14c7f8b01ef7c21e2350e9b9efdcbb8d533197b63d7bc50d4c75a2190a2fc5633698a532ed07a186333097dd08991852721051d255d1bf2cfc9356cdf523d