Analysis
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max time kernel
118s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
12-10-2024 09:35
Behavioral task
behavioral1
Sample
2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe
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Size
1.1MB
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MD5
38aadaab1378aad3990f785d681fe358
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SHA1
55cf71b6799a04398903568c339728e53bddda7f
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SHA256
1636d268a7cf25d56a709c0ac48a420cd355fdb312d3fffb97a523ba3a33aea3
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SHA512
4764429ab490eee5153c3f11b75e678c472d2f6b43acb43308054994e6c539947782df1144e6ff3fdfc0317e08be15d8c138662e5ea2c671a77db3b7bb0a50fd
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SSDEEP
12288:kKjszLwuTaXEItdeNw2L8f4QOp8i2flUv1jVf80bYOTKAQT/Lo+43vGbdXMNlDc7:5f5efTYcP5gPa
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/2416-1-0x00000000003C0000-0x00000000004D4000-memory.dmp family_chaos behavioral1/files/0x000e000000013a51-6.dat family_chaos behavioral1/memory/2944-8-0x0000000000960000-0x0000000000A74000-memory.dmp family_chaos -
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 1876 bcdedit.exe 2368 bcdedit.exe -
pid Process 2036 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 2944 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-1-5-21-4177215427-74451935-3209572229-1000\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-4177215427-74451935-3209572229-1000\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\Start Menu\Programs\Startup\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\Y07CWM3B\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\XMOOPFZ1\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\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\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\SK4ZQZYF\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\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\BAFOJIJD\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\Accessories\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\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\Saved Games\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\Admin\AppData\Local\Microsoft\Feeds Cache\5WY8FHO4\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\Local\Microsoft\Windows Mail\Stationery\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\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\09OB1FV8\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\WMBPAEF9\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\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\Start Menu\Programs\Administrative Tools\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\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\System Tools\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\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\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\All Users\Microsoft\Windows\Start Menu\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\Favorites\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\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\60QKHYE2\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\z2n8956fp.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 2704 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1428 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2416 2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe 2944 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2416 2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe 2416 2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe 2416 2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe 2944 svchost.exe 2944 svchost.exe 2944 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2416 2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe Token: SeDebugPrivilege 2944 svchost.exe Token: SeBackupPrivilege 2772 vssvc.exe Token: SeRestorePrivilege 2772 vssvc.exe Token: SeAuditPrivilege 2772 vssvc.exe Token: SeIncreaseQuotaPrivilege 2616 WMIC.exe Token: SeSecurityPrivilege 2616 WMIC.exe Token: SeTakeOwnershipPrivilege 2616 WMIC.exe Token: SeLoadDriverPrivilege 2616 WMIC.exe Token: SeSystemProfilePrivilege 2616 WMIC.exe Token: SeSystemtimePrivilege 2616 WMIC.exe Token: SeProfSingleProcessPrivilege 2616 WMIC.exe Token: SeIncBasePriorityPrivilege 2616 WMIC.exe Token: SeCreatePagefilePrivilege 2616 WMIC.exe Token: SeBackupPrivilege 2616 WMIC.exe Token: SeRestorePrivilege 2616 WMIC.exe Token: SeShutdownPrivilege 2616 WMIC.exe Token: SeDebugPrivilege 2616 WMIC.exe Token: SeSystemEnvironmentPrivilege 2616 WMIC.exe Token: SeRemoteShutdownPrivilege 2616 WMIC.exe Token: SeUndockPrivilege 2616 WMIC.exe Token: SeManageVolumePrivilege 2616 WMIC.exe Token: 33 2616 WMIC.exe Token: 34 2616 WMIC.exe Token: 35 2616 WMIC.exe Token: SeIncreaseQuotaPrivilege 2616 WMIC.exe Token: SeSecurityPrivilege 2616 WMIC.exe Token: SeTakeOwnershipPrivilege 2616 WMIC.exe Token: SeLoadDriverPrivilege 2616 WMIC.exe Token: SeSystemProfilePrivilege 2616 WMIC.exe Token: SeSystemtimePrivilege 2616 WMIC.exe Token: SeProfSingleProcessPrivilege 2616 WMIC.exe Token: SeIncBasePriorityPrivilege 2616 WMIC.exe Token: SeCreatePagefilePrivilege 2616 WMIC.exe Token: SeBackupPrivilege 2616 WMIC.exe Token: SeRestorePrivilege 2616 WMIC.exe Token: SeShutdownPrivilege 2616 WMIC.exe Token: SeDebugPrivilege 2616 WMIC.exe Token: SeSystemEnvironmentPrivilege 2616 WMIC.exe Token: SeRemoteShutdownPrivilege 2616 WMIC.exe Token: SeUndockPrivilege 2616 WMIC.exe Token: SeManageVolumePrivilege 2616 WMIC.exe Token: 33 2616 WMIC.exe Token: 34 2616 WMIC.exe Token: 35 2616 WMIC.exe Token: SeBackupPrivilege 1604 wbengine.exe Token: SeRestorePrivilege 1604 wbengine.exe Token: SeSecurityPrivilege 1604 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2416 wrote to memory of 2944 2416 2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe 31 PID 2416 wrote to memory of 2944 2416 2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe 31 PID 2416 wrote to memory of 2944 2416 2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe 31 PID 2944 wrote to memory of 2776 2944 svchost.exe 32 PID 2944 wrote to memory of 2776 2944 svchost.exe 32 PID 2944 wrote to memory of 2776 2944 svchost.exe 32 PID 2776 wrote to memory of 2704 2776 cmd.exe 34 PID 2776 wrote to memory of 2704 2776 cmd.exe 34 PID 2776 wrote to memory of 2704 2776 cmd.exe 34 PID 2776 wrote to memory of 2616 2776 cmd.exe 37 PID 2776 wrote to memory of 2616 2776 cmd.exe 37 PID 2776 wrote to memory of 2616 2776 cmd.exe 37 PID 2944 wrote to memory of 1624 2944 svchost.exe 39 PID 2944 wrote to memory of 1624 2944 svchost.exe 39 PID 2944 wrote to memory of 1624 2944 svchost.exe 39 PID 1624 wrote to memory of 1876 1624 cmd.exe 41 PID 1624 wrote to memory of 1876 1624 cmd.exe 41 PID 1624 wrote to memory of 1876 1624 cmd.exe 41 PID 1624 wrote to memory of 2368 1624 cmd.exe 42 PID 1624 wrote to memory of 2368 1624 cmd.exe 42 PID 1624 wrote to memory of 2368 1624 cmd.exe 42 PID 2944 wrote to memory of 1048 2944 svchost.exe 43 PID 2944 wrote to memory of 1048 2944 svchost.exe 43 PID 2944 wrote to memory of 1048 2944 svchost.exe 43 PID 1048 wrote to memory of 2036 1048 cmd.exe 45 PID 1048 wrote to memory of 2036 1048 cmd.exe 45 PID 1048 wrote to memory of 2036 1048 cmd.exe 45 PID 2944 wrote to memory of 1428 2944 svchost.exe 50 PID 2944 wrote to memory of 1428 2944 svchost.exe 50 PID 2944 wrote to memory of 1428 2944 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.
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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\2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-12_38aadaab1378aad3990f785d681fe358_wannacry.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2416 -
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:2944 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2776 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2704
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2616
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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:1624 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1876
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2368
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1048 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2036
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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:1428
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2772
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1604
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2324
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2332
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
1KB
MD5bd69bec61f716a15d96e88499db4fd43
SHA19bcfadf43367971d899de6caa3ac7f93fac5ebba
SHA2560d4fab7adf162ce579aed823e390da88a28770b5f9931ab6806af9a27fcd612a
SHA512a06ef0f961125b01901e32c7b61ef25333d4fc4922c89ce2da7faf03c8d3cff31071a9de44a44c93e8152f0a9b71c267f53f59c4fef19f0e79b3ca6da34fc761
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Filesize
1.1MB
MD538aadaab1378aad3990f785d681fe358
SHA155cf71b6799a04398903568c339728e53bddda7f
SHA2561636d268a7cf25d56a709c0ac48a420cd355fdb312d3fffb97a523ba3a33aea3
SHA5124764429ab490eee5153c3f11b75e678c472d2f6b43acb43308054994e6c539947782df1144e6ff3fdfc0317e08be15d8c138662e5ea2c671a77db3b7bb0a50fd
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0