Analysis
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max time kernel
20s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
20-12-2024 05:38
Behavioral task
behavioral1
Sample
2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe
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Size
518KB
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MD5
9ce3929aaec5d8761a8e30097e005abf
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SHA1
7d3747521d2d4eb933427891c6df6eb2adbe69ef
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SHA256
4e4f4ecd0a58337656a6f4fd8a2e728c7c8f4f33ca8886e0db16035f588d7680
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SHA512
360b7bbaaf2825a8ae472321d6d1173b37d8548e7bb5383b75222fd412794aa276f82efd492f4dbbac1d08ff80317264f2aaa0fd700bd77e424965d87722c4a6
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SSDEEP
12288:jI6ml8eenfmeq8je6e6U0T0aYA0eFHkRNaGU3N9nQFZ:2HosVN1jZ
Malware Config
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/2620-1-0x0000000000AB0000-0x0000000000B38000-memory.dmp family_chaos behavioral1/files/0x000a000000012254-6.dat family_chaos behavioral1/memory/2836-9-0x00000000012A0000-0x0000000001328000-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 796 bcdedit.exe 2124 bcdedit.exe -
pid Process 1824 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 2836 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\Admin\Downloads\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\Roaming\Microsoft\Windows\Libraries\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\Searches\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\AppData\Local\Microsoft\Windows Mail\Stationery\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\Public\Pictures\Sample Pictures\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\Default\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\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\BBWU148F\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\Public\Recorded TV\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\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\Public\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\Contacts\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\Temporary Internet Files\Content.IE5\SEGJVAZC\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\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\Favorites\Links for United States\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\AppData\Local\Microsoft\Feeds Cache\ADWO43R6\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Public\Videos\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\Temporary Internet Files\Content.IE5\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\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\4KNYJNXZ\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\History\History.IE5\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Programs\Accessories\Windows PowerShell\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\Admin\AppData\Roaming\Microsoft\Windows\Recent\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\\i7mwtkum7.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 2920 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2896 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2620 2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe 2836 svchost.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2620 2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe 2620 2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe 2620 2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe 2836 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2620 2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe Token: SeDebugPrivilege 2836 svchost.exe Token: SeBackupPrivilege 1740 vssvc.exe Token: SeRestorePrivilege 1740 vssvc.exe Token: SeAuditPrivilege 1740 vssvc.exe Token: SeIncreaseQuotaPrivilege 2268 WMIC.exe Token: SeSecurityPrivilege 2268 WMIC.exe Token: SeTakeOwnershipPrivilege 2268 WMIC.exe Token: SeLoadDriverPrivilege 2268 WMIC.exe Token: SeSystemProfilePrivilege 2268 WMIC.exe Token: SeSystemtimePrivilege 2268 WMIC.exe Token: SeProfSingleProcessPrivilege 2268 WMIC.exe Token: SeIncBasePriorityPrivilege 2268 WMIC.exe Token: SeCreatePagefilePrivilege 2268 WMIC.exe Token: SeBackupPrivilege 2268 WMIC.exe Token: SeRestorePrivilege 2268 WMIC.exe Token: SeShutdownPrivilege 2268 WMIC.exe Token: SeDebugPrivilege 2268 WMIC.exe Token: SeSystemEnvironmentPrivilege 2268 WMIC.exe Token: SeRemoteShutdownPrivilege 2268 WMIC.exe Token: SeUndockPrivilege 2268 WMIC.exe Token: SeManageVolumePrivilege 2268 WMIC.exe Token: 33 2268 WMIC.exe Token: 34 2268 WMIC.exe Token: 35 2268 WMIC.exe Token: SeIncreaseQuotaPrivilege 2268 WMIC.exe Token: SeSecurityPrivilege 2268 WMIC.exe Token: SeTakeOwnershipPrivilege 2268 WMIC.exe Token: SeLoadDriverPrivilege 2268 WMIC.exe Token: SeSystemProfilePrivilege 2268 WMIC.exe Token: SeSystemtimePrivilege 2268 WMIC.exe Token: SeProfSingleProcessPrivilege 2268 WMIC.exe Token: SeIncBasePriorityPrivilege 2268 WMIC.exe Token: SeCreatePagefilePrivilege 2268 WMIC.exe Token: SeBackupPrivilege 2268 WMIC.exe Token: SeRestorePrivilege 2268 WMIC.exe Token: SeShutdownPrivilege 2268 WMIC.exe Token: SeDebugPrivilege 2268 WMIC.exe Token: SeSystemEnvironmentPrivilege 2268 WMIC.exe Token: SeRemoteShutdownPrivilege 2268 WMIC.exe Token: SeUndockPrivilege 2268 WMIC.exe Token: SeManageVolumePrivilege 2268 WMIC.exe Token: 33 2268 WMIC.exe Token: 34 2268 WMIC.exe Token: 35 2268 WMIC.exe Token: SeBackupPrivilege 1624 wbengine.exe Token: SeRestorePrivilege 1624 wbengine.exe Token: SeSecurityPrivilege 1624 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2620 wrote to memory of 2836 2620 2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe 30 PID 2620 wrote to memory of 2836 2620 2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe 30 PID 2620 wrote to memory of 2836 2620 2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe 30 PID 2836 wrote to memory of 3052 2836 svchost.exe 31 PID 2836 wrote to memory of 3052 2836 svchost.exe 31 PID 2836 wrote to memory of 3052 2836 svchost.exe 31 PID 3052 wrote to memory of 2920 3052 cmd.exe 33 PID 3052 wrote to memory of 2920 3052 cmd.exe 33 PID 3052 wrote to memory of 2920 3052 cmd.exe 33 PID 3052 wrote to memory of 2268 3052 cmd.exe 36 PID 3052 wrote to memory of 2268 3052 cmd.exe 36 PID 3052 wrote to memory of 2268 3052 cmd.exe 36 PID 2836 wrote to memory of 1380 2836 svchost.exe 38 PID 2836 wrote to memory of 1380 2836 svchost.exe 38 PID 2836 wrote to memory of 1380 2836 svchost.exe 38 PID 1380 wrote to memory of 796 1380 cmd.exe 40 PID 1380 wrote to memory of 796 1380 cmd.exe 40 PID 1380 wrote to memory of 796 1380 cmd.exe 40 PID 1380 wrote to memory of 2124 1380 cmd.exe 41 PID 1380 wrote to memory of 2124 1380 cmd.exe 41 PID 1380 wrote to memory of 2124 1380 cmd.exe 41 PID 2836 wrote to memory of 1032 2836 svchost.exe 42 PID 2836 wrote to memory of 1032 2836 svchost.exe 42 PID 2836 wrote to memory of 1032 2836 svchost.exe 42 PID 1032 wrote to memory of 1824 1032 cmd.exe 44 PID 1032 wrote to memory of 1824 1032 cmd.exe 44 PID 1032 wrote to memory of 1824 1032 cmd.exe 44 PID 2836 wrote to memory of 2896 2836 svchost.exe 49 PID 2836 wrote to memory of 2896 2836 svchost.exe 49 PID 2836 wrote to memory of 2896 2836 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\2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-20_9ce3929aaec5d8761a8e30097e005abf_wannacry.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2620 -
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:2836 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3052 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2920
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2268
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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:1380 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:796
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2124
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1032 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1824
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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:2896
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1740
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1624
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:784
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1732
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
288B
MD502d8e6c2e71aa2fc4ef58fa78d19327a
SHA117a5e1d326c50862e9bf137c2637eec016444cdf
SHA25677b5b78f95f36dc5926ccbd9997cf490317a59ddf0d4fa824078004ab84fdbe7
SHA512b115995d33820b71fddb9f35e84b3882b2c96d631c0268390fd1e4b4c98e7f5a3fac2335ff4d8071b50f21d4c87b9ea40c5b9bf74c5c769f08ab504589131152
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Filesize
518KB
MD59ce3929aaec5d8761a8e30097e005abf
SHA17d3747521d2d4eb933427891c6df6eb2adbe69ef
SHA2564e4f4ecd0a58337656a6f4fd8a2e728c7c8f4f33ca8886e0db16035f588d7680
SHA512360b7bbaaf2825a8ae472321d6d1173b37d8548e7bb5383b75222fd412794aa276f82efd492f4dbbac1d08ff80317264f2aaa0fd700bd77e424965d87722c4a6
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0