Analysis
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max time kernel
121s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
01-01-2025 03:30
Behavioral task
behavioral1
Sample
2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe
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Size
356KB
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MD5
c7b696a87ebd99919eb5ad685c38e565
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SHA1
b405dc2e87089b0294debdcaeb445a09d3bc2247
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SHA256
608ffc0b1e989e29b454389a9807e3721c075a2334d7d51765b5adad589fa0ef
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SHA512
94e1711f62755e1a838d4c03530111054bd4a5b58b47660d2fc46fe059e1e7997dc6d5042afd8d3273e64d6fd258f0fc3ffd6120308a96fc09a9c0b79973e80e
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SSDEEP
6144:URq9gVZ8CMci9haFy43XbyvtDAwz4e/VE/YbFwrSMiinNzP4U:U7SZciTaw4Hbyhz4uVEgbFQzPx
Malware Config
Extracted
C:\Users\Admin\AppData\Local\read_it.txt
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/3052-1-0x0000000000BC0000-0x0000000000C20000-memory.dmp family_chaos behavioral1/files/0x000d0000000133b8-6.dat family_chaos behavioral1/memory/2380-8-0x0000000000030000-0x0000000000090000-memory.dmp family_chaos -
Chaos family
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 1740 bcdedit.exe 1788 bcdedit.exe -
pid Process 1752 wbadmin.exe -
Disables Task Manager via registry modification
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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\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2380 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\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\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\Favorites\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\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\Favorites\Links for United States\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\Public\Downloads\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\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\Accessibility\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\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BBWU148F\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\All Users\Microsoft\Windows\Start Menu\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\Windows Mail\Stationery\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\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\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\1U7Y9BT8\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\5O2ZS8DL\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\ADWO43R6\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\Downloads\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\Public\Music\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\Games\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\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\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\Feeds Cache\4KNYJNXZ\desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\G0UQMQ1C\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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4TDQSVWU\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3692679935-4019334568-335155002-1000\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\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\pttl6pi5l.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2896 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2496 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 3052 2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe 2380 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3052 2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe 3052 2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe 3052 2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe 2380 svchost.exe 2380 svchost.exe 2380 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 3052 2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe Token: SeDebugPrivilege 2380 svchost.exe Token: SeBackupPrivilege 2972 vssvc.exe Token: SeRestorePrivilege 2972 vssvc.exe Token: SeAuditPrivilege 2972 vssvc.exe Token: SeIncreaseQuotaPrivilege 1268 WMIC.exe Token: SeSecurityPrivilege 1268 WMIC.exe Token: SeTakeOwnershipPrivilege 1268 WMIC.exe Token: SeLoadDriverPrivilege 1268 WMIC.exe Token: SeSystemProfilePrivilege 1268 WMIC.exe Token: SeSystemtimePrivilege 1268 WMIC.exe Token: SeProfSingleProcessPrivilege 1268 WMIC.exe Token: SeIncBasePriorityPrivilege 1268 WMIC.exe Token: SeCreatePagefilePrivilege 1268 WMIC.exe Token: SeBackupPrivilege 1268 WMIC.exe Token: SeRestorePrivilege 1268 WMIC.exe Token: SeShutdownPrivilege 1268 WMIC.exe Token: SeDebugPrivilege 1268 WMIC.exe Token: SeSystemEnvironmentPrivilege 1268 WMIC.exe Token: SeRemoteShutdownPrivilege 1268 WMIC.exe Token: SeUndockPrivilege 1268 WMIC.exe Token: SeManageVolumePrivilege 1268 WMIC.exe Token: 33 1268 WMIC.exe Token: 34 1268 WMIC.exe Token: 35 1268 WMIC.exe Token: SeIncreaseQuotaPrivilege 1268 WMIC.exe Token: SeSecurityPrivilege 1268 WMIC.exe Token: SeTakeOwnershipPrivilege 1268 WMIC.exe Token: SeLoadDriverPrivilege 1268 WMIC.exe Token: SeSystemProfilePrivilege 1268 WMIC.exe Token: SeSystemtimePrivilege 1268 WMIC.exe Token: SeProfSingleProcessPrivilege 1268 WMIC.exe Token: SeIncBasePriorityPrivilege 1268 WMIC.exe Token: SeCreatePagefilePrivilege 1268 WMIC.exe Token: SeBackupPrivilege 1268 WMIC.exe Token: SeRestorePrivilege 1268 WMIC.exe Token: SeShutdownPrivilege 1268 WMIC.exe Token: SeDebugPrivilege 1268 WMIC.exe Token: SeSystemEnvironmentPrivilege 1268 WMIC.exe Token: SeRemoteShutdownPrivilege 1268 WMIC.exe Token: SeUndockPrivilege 1268 WMIC.exe Token: SeManageVolumePrivilege 1268 WMIC.exe Token: 33 1268 WMIC.exe Token: 34 1268 WMIC.exe Token: 35 1268 WMIC.exe Token: SeBackupPrivilege 1724 wbengine.exe Token: SeRestorePrivilege 1724 wbengine.exe Token: SeSecurityPrivilege 1724 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 3052 wrote to memory of 2380 3052 2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe 30 PID 3052 wrote to memory of 2380 3052 2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe 30 PID 3052 wrote to memory of 2380 3052 2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe 30 PID 2380 wrote to memory of 2744 2380 svchost.exe 31 PID 2380 wrote to memory of 2744 2380 svchost.exe 31 PID 2380 wrote to memory of 2744 2380 svchost.exe 31 PID 2744 wrote to memory of 2896 2744 cmd.exe 33 PID 2744 wrote to memory of 2896 2744 cmd.exe 33 PID 2744 wrote to memory of 2896 2744 cmd.exe 33 PID 2744 wrote to memory of 1268 2744 cmd.exe 36 PID 2744 wrote to memory of 1268 2744 cmd.exe 36 PID 2744 wrote to memory of 1268 2744 cmd.exe 36 PID 2380 wrote to memory of 2368 2380 svchost.exe 38 PID 2380 wrote to memory of 2368 2380 svchost.exe 38 PID 2380 wrote to memory of 2368 2380 svchost.exe 38 PID 2368 wrote to memory of 1740 2368 cmd.exe 40 PID 2368 wrote to memory of 1740 2368 cmd.exe 40 PID 2368 wrote to memory of 1740 2368 cmd.exe 40 PID 2368 wrote to memory of 1788 2368 cmd.exe 41 PID 2368 wrote to memory of 1788 2368 cmd.exe 41 PID 2368 wrote to memory of 1788 2368 cmd.exe 41 PID 2380 wrote to memory of 2036 2380 svchost.exe 42 PID 2380 wrote to memory of 2036 2380 svchost.exe 42 PID 2380 wrote to memory of 2036 2380 svchost.exe 42 PID 2036 wrote to memory of 1752 2036 cmd.exe 44 PID 2036 wrote to memory of 1752 2036 cmd.exe 44 PID 2036 wrote to memory of 1752 2036 cmd.exe 44 PID 2380 wrote to memory of 2496 2380 svchost.exe 49 PID 2380 wrote to memory of 2496 2380 svchost.exe 49 PID 2380 wrote to memory of 2496 2380 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.
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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\2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-01_c7b696a87ebd99919eb5ad685c38e565_wannacry.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3052 -
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:2380 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2744 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2896
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1268
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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
PID:2368 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1740
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1788
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1752
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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:2496
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2972
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1724
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2188
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2680
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
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Filesize
582B
MD5ed5cc52876db869de48a4783069c2a5e
SHA1a9d51ceaeff715ace430f9462ab2ee4e7f33e70e
SHA25645726f2f29967ef016f8d556fb6468a577307d67388cc4530295a9ca10fdfa36
SHA5121745aefb9b4db4cdd7c08ee3a7d133db08f35a336fd18b598211519b481ef25ac84a3e8a3da3db06caef9f531288d1cf0ca8d4b2560637945e7953e8b45421f5
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Filesize
356KB
MD5c7b696a87ebd99919eb5ad685c38e565
SHA1b405dc2e87089b0294debdcaeb445a09d3bc2247
SHA256608ffc0b1e989e29b454389a9807e3721c075a2334d7d51765b5adad589fa0ef
SHA51294e1711f62755e1a838d4c03530111054bd4a5b58b47660d2fc46fe059e1e7997dc6d5042afd8d3273e64d6fd258f0fc3ffd6120308a96fc09a9c0b79973e80e
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0