Analysis
-
max time kernel
119s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
06-07-2024 13:44
Behavioral task
behavioral1
Sample
2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe
Resource
win10v2004-20240704-en
General
-
Target
2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe
-
Size
262KB
-
MD5
16c101a408f5bd1526efaa723c33ef3d
-
SHA1
7a3c1e41118c3fb4824c34386dba3fbbbca6577f
-
SHA256
b9f591c79472e9b88a23026a4415b4de523e75416907dcf24717e2fb318a10ca
-
SHA512
5702185762d79c6cd6a5bb3b838c54bafa05ce59cae2b1d6f65017bcb0f9ef25565437fe4bf72a1eeee2754d13db1bb609db4996480a8ffb7b40db908b720698
-
SSDEEP
3072:tLc9bwyZnCboGSqihQ5Mk/EHCSQ9IiNP8Q1fBLe8vQQ7b8lW76+zGklGT5Ckn/dg:Fc90ScRiDH6b/e8/8li3GXuE3y7
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt
chaos
Signatures
-
Chaos
Ransomware family first seen in June 2021.
-
Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/772-1-0x0000000000F10000-0x0000000000F58000-memory.dmp family_chaos behavioral1/files/0x00080000000186f7-5.dat family_chaos behavioral1/memory/2264-7-0x0000000000AA0000-0x0000000000AE8000-memory.dmp family_chaos -
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 900 bcdedit.exe 1196 bcdedit.exe -
pid Process 2880 wbadmin.exe -
Disables Task Manager via registry modification
-
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 2264 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) 64 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\3CPCT0UC\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\XW1885AL\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\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\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3434294380-2554721341-1919518612-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\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\Public\Music\Sample Music\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\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\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\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\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\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\98I61CZ5\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\JF1SL0MP\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BRLV7L3G\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\BNS2IARI\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\533kc84go.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2744 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1556 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2264 svchost.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 772 2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe 772 2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe 772 2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe 2264 svchost.exe 2264 svchost.exe 2264 svchost.exe 2264 svchost.exe 2264 svchost.exe 2264 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 772 2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe Token: SeDebugPrivilege 2264 svchost.exe Token: SeBackupPrivilege 2896 vssvc.exe Token: SeRestorePrivilege 2896 vssvc.exe Token: SeAuditPrivilege 2896 vssvc.exe Token: SeIncreaseQuotaPrivilege 2196 WMIC.exe Token: SeSecurityPrivilege 2196 WMIC.exe Token: SeTakeOwnershipPrivilege 2196 WMIC.exe Token: SeLoadDriverPrivilege 2196 WMIC.exe Token: SeSystemProfilePrivilege 2196 WMIC.exe Token: SeSystemtimePrivilege 2196 WMIC.exe Token: SeProfSingleProcessPrivilege 2196 WMIC.exe Token: SeIncBasePriorityPrivilege 2196 WMIC.exe Token: SeCreatePagefilePrivilege 2196 WMIC.exe Token: SeBackupPrivilege 2196 WMIC.exe Token: SeRestorePrivilege 2196 WMIC.exe Token: SeShutdownPrivilege 2196 WMIC.exe Token: SeDebugPrivilege 2196 WMIC.exe Token: SeSystemEnvironmentPrivilege 2196 WMIC.exe Token: SeRemoteShutdownPrivilege 2196 WMIC.exe Token: SeUndockPrivilege 2196 WMIC.exe Token: SeManageVolumePrivilege 2196 WMIC.exe Token: 33 2196 WMIC.exe Token: 34 2196 WMIC.exe Token: 35 2196 WMIC.exe Token: SeIncreaseQuotaPrivilege 2196 WMIC.exe Token: SeSecurityPrivilege 2196 WMIC.exe Token: SeTakeOwnershipPrivilege 2196 WMIC.exe Token: SeLoadDriverPrivilege 2196 WMIC.exe Token: SeSystemProfilePrivilege 2196 WMIC.exe Token: SeSystemtimePrivilege 2196 WMIC.exe Token: SeProfSingleProcessPrivilege 2196 WMIC.exe Token: SeIncBasePriorityPrivilege 2196 WMIC.exe Token: SeCreatePagefilePrivilege 2196 WMIC.exe Token: SeBackupPrivilege 2196 WMIC.exe Token: SeRestorePrivilege 2196 WMIC.exe Token: SeShutdownPrivilege 2196 WMIC.exe Token: SeDebugPrivilege 2196 WMIC.exe Token: SeSystemEnvironmentPrivilege 2196 WMIC.exe Token: SeRemoteShutdownPrivilege 2196 WMIC.exe Token: SeUndockPrivilege 2196 WMIC.exe Token: SeManageVolumePrivilege 2196 WMIC.exe Token: 33 2196 WMIC.exe Token: 34 2196 WMIC.exe Token: 35 2196 WMIC.exe Token: SeBackupPrivilege 2392 wbengine.exe Token: SeRestorePrivilege 2392 wbengine.exe Token: SeSecurityPrivilege 2392 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 772 wrote to memory of 2264 772 2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe 31 PID 772 wrote to memory of 2264 772 2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe 31 PID 772 wrote to memory of 2264 772 2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe 31 PID 2264 wrote to memory of 2472 2264 svchost.exe 32 PID 2264 wrote to memory of 2472 2264 svchost.exe 32 PID 2264 wrote to memory of 2472 2264 svchost.exe 32 PID 2472 wrote to memory of 2744 2472 cmd.exe 34 PID 2472 wrote to memory of 2744 2472 cmd.exe 34 PID 2472 wrote to memory of 2744 2472 cmd.exe 34 PID 2472 wrote to memory of 2196 2472 cmd.exe 37 PID 2472 wrote to memory of 2196 2472 cmd.exe 37 PID 2472 wrote to memory of 2196 2472 cmd.exe 37 PID 2264 wrote to memory of 2996 2264 svchost.exe 39 PID 2264 wrote to memory of 2996 2264 svchost.exe 39 PID 2264 wrote to memory of 2996 2264 svchost.exe 39 PID 2996 wrote to memory of 900 2996 cmd.exe 41 PID 2996 wrote to memory of 900 2996 cmd.exe 41 PID 2996 wrote to memory of 900 2996 cmd.exe 41 PID 2996 wrote to memory of 1196 2996 cmd.exe 42 PID 2996 wrote to memory of 1196 2996 cmd.exe 42 PID 2996 wrote to memory of 1196 2996 cmd.exe 42 PID 2264 wrote to memory of 2624 2264 svchost.exe 43 PID 2264 wrote to memory of 2624 2264 svchost.exe 43 PID 2264 wrote to memory of 2624 2264 svchost.exe 43 PID 2624 wrote to memory of 2880 2624 cmd.exe 45 PID 2624 wrote to memory of 2880 2624 cmd.exe 45 PID 2624 wrote to memory of 2880 2624 cmd.exe 45 PID 2264 wrote to memory of 1556 2264 svchost.exe 50 PID 2264 wrote to memory of 1556 2264 svchost.exe 50 PID 2264 wrote to memory of 1556 2264 svchost.exe 50 -
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\2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-06_16c101a408f5bd1526efaa723c33ef3d_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:772 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2264 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2472 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2744
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2196
-
-
-
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:2996 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:900
-
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1196
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2624 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2880
-
-
-
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:1556
-
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2896
-
C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2392
-
C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3004
-
C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1796
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740
-
Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
-
Filesize
262KB
MD516c101a408f5bd1526efaa723c33ef3d
SHA17a3c1e41118c3fb4824c34386dba3fbbbca6577f
SHA256b9f591c79472e9b88a23026a4415b4de523e75416907dcf24717e2fb318a10ca
SHA5125702185762d79c6cd6a5bb3b838c54bafa05ce59cae2b1d6f65017bcb0f9ef25565437fe4bf72a1eeee2754d13db1bb609db4996480a8ffb7b40db908b720698