Analysis
- max time kernel
117s - max time network
121s - platform
windows7_x64 - resource
win7-20240903-en - resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system - submitted
13/03/2025, 10:38
Behavioral task
behavioral1
Sample
2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe
Resource
win10v2004-20250217-en
General
- Target 2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe
- Size 103KB
- Sample250313-mpgdcstjs8
- SHA256 526a87ce682ec831ea656b211dc7d681b0db25cdbcc3972d33fd9f369ff5743f
- MD5 8fa709ffd1ed8ca2682a7b013fde0e53
- SHA1 5a231c2ed922182b25c3b88c88ccece5c95879d5
- SHA512 af19e18c965395e8347f67a0d58f14fd144f9057e0b7583256a0a26d5ff8f5baadaa56142c918f4a28796c30efbf20a162952ed2590dc930d0613dc1642e4f40
- SSDEEP 1536:WNc9pooe6gq9Whz7mEglaXi2OPTOlkBysc1XDoCaJZUHDrGjy4JHjvET06dS:xM6gq9WlybAi2CO6vc1IHUHPhgEdS
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Chaos
Ransomware family first seen in June 2021.
- Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/2996-1-0x0000000000A70000-0x0000000000A90000-memory.dmp family_chaos behavioral1/files/0x0007000000012115-6.dat family_chaos behavioral1/memory/2660-8-0x0000000000A30000-0x0000000000A50000-memory.dmp family_chaos - Chaos family
- 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 1980 bcdedit.exe 2032 bcdedit.exe -
pid Process 1520 wbadmin.exe - Disables Task Manager via registry modification
- Drops startup file 2 IoCs
description ioc Process 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\README.txt svchost.exe - Executes dropped EXE 1 IoCs
pid Process 2660 svchost.exe - Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe - Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Admin\Favorites\Links for United States\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\All Users\Microsoft\Windows\Start Menu\Programs\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\Public\Downloads\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\Local\Microsoft\Windows\History\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\Admin\Documents\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-1-5-21-3290804112-2823094203-3137964600-1000\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\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\Y3Z0XF05\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\Default\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\Accessories\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\Admin\AppData\Local\Microsoft\Feeds Cache\RM4QEUM4\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\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\All Users\Microsoft\Windows\Start Menu\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\Public\Music\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\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\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\Public\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\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\HWUYADN5\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\Admin\Links\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\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\WY6T2DFU\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\Public\Documents\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\Downloads\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\Local\Microsoft\Feeds Cache\YLJ4V77F\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\HE9LBEC2\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\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\8NROS34R\desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe - Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\d0k2im3hy.jpg" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.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 2464 vssadmin.exe - Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2028 NOTEPAD.EXE - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2660 svchost.exe - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2996 2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe 2996 2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe 2996 2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe 2660 svchost.exe 2660 svchost.exe 2660 svchost.exe - Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2996 2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe Token: SeDebugPrivilege 2660 svchost.exe Token: SeBackupPrivilege 2548 vssvc.exe Token: SeRestorePrivilege 2548 vssvc.exe Token: SeAuditPrivilege 2548 vssvc.exe Token: SeIncreaseQuotaPrivilege 2176 WMIC.exe Token: SeSecurityPrivilege 2176 WMIC.exe Token: SeTakeOwnershipPrivilege 2176 WMIC.exe Token: SeLoadDriverPrivilege 2176 WMIC.exe Token: SeSystemProfilePrivilege 2176 WMIC.exe Token: SeSystemtimePrivilege 2176 WMIC.exe Token: SeProfSingleProcessPrivilege 2176 WMIC.exe Token: SeIncBasePriorityPrivilege 2176 WMIC.exe Token: SeCreatePagefilePrivilege 2176 WMIC.exe Token: SeBackupPrivilege 2176 WMIC.exe Token: SeRestorePrivilege 2176 WMIC.exe Token: SeShutdownPrivilege 2176 WMIC.exe Token: SeDebugPrivilege 2176 WMIC.exe Token: SeSystemEnvironmentPrivilege 2176 WMIC.exe Token: SeRemoteShutdownPrivilege 2176 WMIC.exe Token: SeUndockPrivilege 2176 WMIC.exe Token: SeManageVolumePrivilege 2176 WMIC.exe Token: 33 2176 WMIC.exe Token: 34 2176 WMIC.exe Token: 35 2176 WMIC.exe Token: SeIncreaseQuotaPrivilege 2176 WMIC.exe Token: SeSecurityPrivilege 2176 WMIC.exe Token: SeTakeOwnershipPrivilege 2176 WMIC.exe Token: SeLoadDriverPrivilege 2176 WMIC.exe Token: SeSystemProfilePrivilege 2176 WMIC.exe Token: SeSystemtimePrivilege 2176 WMIC.exe Token: SeProfSingleProcessPrivilege 2176 WMIC.exe Token: SeIncBasePriorityPrivilege 2176 WMIC.exe Token: SeCreatePagefilePrivilege 2176 WMIC.exe Token: SeBackupPrivilege 2176 WMIC.exe Token: SeRestorePrivilege 2176 WMIC.exe Token: SeShutdownPrivilege 2176 WMIC.exe Token: SeDebugPrivilege 2176 WMIC.exe Token: SeSystemEnvironmentPrivilege 2176 WMIC.exe Token: SeRemoteShutdownPrivilege 2176 WMIC.exe Token: SeUndockPrivilege 2176 WMIC.exe Token: SeManageVolumePrivilege 2176 WMIC.exe Token: 33 2176 WMIC.exe Token: 34 2176 WMIC.exe Token: 35 2176 WMIC.exe Token: SeBackupPrivilege 1992 wbengine.exe Token: SeRestorePrivilege 1992 wbengine.exe Token: SeSecurityPrivilege 1992 wbengine.exe - Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2996 wrote to memory of 2660 2996 2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe 30 PID 2996 wrote to memory of 2660 2996 2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe 30 PID 2996 wrote to memory of 2660 2996 2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe 30 PID 2660 wrote to memory of 2220 2660 svchost.exe 31 PID 2660 wrote to memory of 2220 2660 svchost.exe 31 PID 2660 wrote to memory of 2220 2660 svchost.exe 31 PID 2220 wrote to memory of 2464 2220 cmd.exe 33 PID 2220 wrote to memory of 2464 2220 cmd.exe 33 PID 2220 wrote to memory of 2464 2220 cmd.exe 33 PID 2220 wrote to memory of 2176 2220 cmd.exe 36 PID 2220 wrote to memory of 2176 2220 cmd.exe 36 PID 2220 wrote to memory of 2176 2220 cmd.exe 36 PID 2660 wrote to memory of 484 2660 svchost.exe 38 PID 2660 wrote to memory of 484 2660 svchost.exe 38 PID 2660 wrote to memory of 484 2660 svchost.exe 38 PID 484 wrote to memory of 1980 484 cmd.exe 40 PID 484 wrote to memory of 1980 484 cmd.exe 40 PID 484 wrote to memory of 1980 484 cmd.exe 40 PID 484 wrote to memory of 2032 484 cmd.exe 41 PID 484 wrote to memory of 2032 484 cmd.exe 41 PID 484 wrote to memory of 2032 484 cmd.exe 41 PID 2660 wrote to memory of 1984 2660 svchost.exe 42 PID 2660 wrote to memory of 1984 2660 svchost.exe 42 PID 2660 wrote to memory of 1984 2660 svchost.exe 42 PID 1984 wrote to memory of 1520 1984 cmd.exe 44 PID 1984 wrote to memory of 1520 1984 cmd.exe 44 PID 1984 wrote to memory of 1520 1984 cmd.exe 44 PID 2660 wrote to memory of 2028 2660 svchost.exe 49 PID 2660 wrote to memory of 2028 2660 svchost.exe 49 PID 2660 wrote to memory of 2028 2660 svchost.exe 49 - 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\2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-03-13_8fa709ffd1ed8ca2682a7b013fde0e53_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2996 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- 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:2660 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2220 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2464
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2176
-
-
-
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:484 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1980
-
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2032
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1984 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1520
-
-
-
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt3⤵
- Opens file in notepad (likely ransom note)
PID:2028
-
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2548
-
C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1992
-
C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1000
-
C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2428
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\README.txt
- Size 823B
- SHA256 ea63d6c416cf36f279795f950f977b5f2345d46e1812c05ab11d69633115e8ce
- MD5 70e1d480a86d026f2a8200a044bc2386
- SHA1 bc49abaeae75578a3a5dbf2c8d16b7b6559b992b
- SHA512 3b1ddc538f84a7fb6ff0c8bede93d43367e4e525581f8195da7bd34af97e78bf3ea7443a1b4c09833059dda2e134e73e33840639e7c257f3d08c3fda5f2f03e3
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\svchost.exe
- Size 103KB
- SHA256 526a87ce682ec831ea656b211dc7d681b0db25cdbcc3972d33fd9f369ff5743f
- MD5 8fa709ffd1ed8ca2682a7b013fde0e53
- SHA1 5a231c2ed922182b25c3b88c88ccece5c95879d5
- SHA512 af19e18c965395e8347f67a0d58f14fd144f9057e0b7583256a0a26d5ff8f5baadaa56142c918f4a28796c30efbf20a162952ed2590dc930d0613dc1642e4f40
- SSDEEP 1536:WNc9pooe6gq9Whz7mEglaXi2OPTOlkBysc1XDoCaJZUHDrGjy4JHjvET06dS:xM6gq9WlybAi2CO6vc1IHUHPhgEdS
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\Desktop\GrantRequest.xml
- Size 1B
- SHA256 8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
- MD5 d1457b72c3fb323a2671125aef3eab5d
- SHA1 5bab61eb53176449e25c2c82f172b82cb13ffb9d
- SHA512 ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
- MD5 SHA1 SHA512