Analysis
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max time kernel
118s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
16-09-2024 07:36
Behavioral task
behavioral1
Sample
2024-09-16_77d67233128926082858536211d16c75_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-16_77d67233128926082858536211d16c75_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-16_77d67233128926082858536211d16c75_wannacry.exe
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Size
440KB
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MD5
77d67233128926082858536211d16c75
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SHA1
f64cfe2bda7787646ca037f9422f8c2663032d42
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SHA256
3469bb786be861e7d9afbfd51b1e6c31870d0b83272d085f59c25969bcaf1313
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SHA512
777720b9d726ab673a1ee6a0ef16320cf7ce1855e6ded788da6b0182f831ed9546164168d5da78b0962c01ed5df539c7ab6f966a150defdc60ba205b32fc6c16
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SSDEEP
6144:Tg8q9o9xLLZVDwYGrH7wVNJUWqIMJ4HnXckdymBh:Tg099LZVDwYGrbwPJtqINHnXPEmB
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/1944-8-0x0000000000A00000-0x0000000000A74000-memory.dmp family_chaos behavioral1/files/0x0007000000012101-7.dat family_chaos behavioral1/memory/2168-1-0x0000000001100000-0x0000000001174000-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 1936 bcdedit.exe 684 bcdedit.exe -
pid Process 1528 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 1944 svchost.exe -
Reads user/profile data of web browsers 2 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-1-5-21-312935884-697965778-3955649944-1000\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\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\Favorites\Links\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\Documents\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\Videos\Sample 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\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\AppData\Local\Microsoft\Feeds Cache\YPLB435F\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\Downloads\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\Accessories\System Tools\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\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\OM66BHWE\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\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\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\Local\Microsoft\Feeds Cache\U8F4PBMO\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\Libraries\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\SendTo\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\Admin\Pictures\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\All Users\Microsoft\Windows\Start Menu\Programs\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\Local\Microsoft\Windows\History\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\Saved Games\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-312935884-697965778-3955649944-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\R627XHFP\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\Downloads\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\Favorites\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\Links\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\Music\Sample Music\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\Contacts\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\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4DY23DRT\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\CUMHXU73\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\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\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\Accessories\Accessibility\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-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\k1l8ij7ou.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 604 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1368 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1944 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2168 2024-09-16_77d67233128926082858536211d16c75_wannacry.exe 2168 2024-09-16_77d67233128926082858536211d16c75_wannacry.exe 2168 2024-09-16_77d67233128926082858536211d16c75_wannacry.exe 1944 svchost.exe 1944 svchost.exe 1944 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2168 2024-09-16_77d67233128926082858536211d16c75_wannacry.exe Token: SeDebugPrivilege 1944 svchost.exe Token: SeBackupPrivilege 2748 vssvc.exe Token: SeRestorePrivilege 2748 vssvc.exe Token: SeAuditPrivilege 2748 vssvc.exe Token: SeIncreaseQuotaPrivilege 2628 WMIC.exe Token: SeSecurityPrivilege 2628 WMIC.exe Token: SeTakeOwnershipPrivilege 2628 WMIC.exe Token: SeLoadDriverPrivilege 2628 WMIC.exe Token: SeSystemProfilePrivilege 2628 WMIC.exe Token: SeSystemtimePrivilege 2628 WMIC.exe Token: SeProfSingleProcessPrivilege 2628 WMIC.exe Token: SeIncBasePriorityPrivilege 2628 WMIC.exe Token: SeCreatePagefilePrivilege 2628 WMIC.exe Token: SeBackupPrivilege 2628 WMIC.exe Token: SeRestorePrivilege 2628 WMIC.exe Token: SeShutdownPrivilege 2628 WMIC.exe Token: SeDebugPrivilege 2628 WMIC.exe Token: SeSystemEnvironmentPrivilege 2628 WMIC.exe Token: SeRemoteShutdownPrivilege 2628 WMIC.exe Token: SeUndockPrivilege 2628 WMIC.exe Token: SeManageVolumePrivilege 2628 WMIC.exe Token: 33 2628 WMIC.exe Token: 34 2628 WMIC.exe Token: 35 2628 WMIC.exe Token: SeIncreaseQuotaPrivilege 2628 WMIC.exe Token: SeSecurityPrivilege 2628 WMIC.exe Token: SeTakeOwnershipPrivilege 2628 WMIC.exe Token: SeLoadDriverPrivilege 2628 WMIC.exe Token: SeSystemProfilePrivilege 2628 WMIC.exe Token: SeSystemtimePrivilege 2628 WMIC.exe Token: SeProfSingleProcessPrivilege 2628 WMIC.exe Token: SeIncBasePriorityPrivilege 2628 WMIC.exe Token: SeCreatePagefilePrivilege 2628 WMIC.exe Token: SeBackupPrivilege 2628 WMIC.exe Token: SeRestorePrivilege 2628 WMIC.exe Token: SeShutdownPrivilege 2628 WMIC.exe Token: SeDebugPrivilege 2628 WMIC.exe Token: SeSystemEnvironmentPrivilege 2628 WMIC.exe Token: SeRemoteShutdownPrivilege 2628 WMIC.exe Token: SeUndockPrivilege 2628 WMIC.exe Token: SeManageVolumePrivilege 2628 WMIC.exe Token: 33 2628 WMIC.exe Token: 34 2628 WMIC.exe Token: 35 2628 WMIC.exe Token: SeBackupPrivilege 1736 wbengine.exe Token: SeRestorePrivilege 1736 wbengine.exe Token: SeSecurityPrivilege 1736 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2168 wrote to memory of 1944 2168 2024-09-16_77d67233128926082858536211d16c75_wannacry.exe 30 PID 2168 wrote to memory of 1944 2168 2024-09-16_77d67233128926082858536211d16c75_wannacry.exe 30 PID 2168 wrote to memory of 1944 2168 2024-09-16_77d67233128926082858536211d16c75_wannacry.exe 30 PID 1944 wrote to memory of 1720 1944 svchost.exe 31 PID 1944 wrote to memory of 1720 1944 svchost.exe 31 PID 1944 wrote to memory of 1720 1944 svchost.exe 31 PID 1720 wrote to memory of 604 1720 cmd.exe 33 PID 1720 wrote to memory of 604 1720 cmd.exe 33 PID 1720 wrote to memory of 604 1720 cmd.exe 33 PID 1720 wrote to memory of 2628 1720 cmd.exe 37 PID 1720 wrote to memory of 2628 1720 cmd.exe 37 PID 1720 wrote to memory of 2628 1720 cmd.exe 37 PID 1944 wrote to memory of 2512 1944 svchost.exe 39 PID 1944 wrote to memory of 2512 1944 svchost.exe 39 PID 1944 wrote to memory of 2512 1944 svchost.exe 39 PID 2512 wrote to memory of 684 2512 cmd.exe 41 PID 2512 wrote to memory of 684 2512 cmd.exe 41 PID 2512 wrote to memory of 684 2512 cmd.exe 41 PID 2512 wrote to memory of 1936 2512 cmd.exe 42 PID 2512 wrote to memory of 1936 2512 cmd.exe 42 PID 2512 wrote to memory of 1936 2512 cmd.exe 42 PID 1944 wrote to memory of 2440 1944 svchost.exe 43 PID 1944 wrote to memory of 2440 1944 svchost.exe 43 PID 1944 wrote to memory of 2440 1944 svchost.exe 43 PID 2440 wrote to memory of 1528 2440 cmd.exe 45 PID 2440 wrote to memory of 1528 2440 cmd.exe 45 PID 2440 wrote to memory of 1528 2440 cmd.exe 45 PID 1944 wrote to memory of 1368 1944 svchost.exe 50 PID 1944 wrote to memory of 1368 1944 svchost.exe 50 PID 1944 wrote to memory of 1368 1944 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\2024-09-16_77d67233128926082858536211d16c75_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-16_77d67233128926082858536211d16c75_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2168 -
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:1944 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1720 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:604
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2628
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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:2512 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:684
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1936
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2440 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1528
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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:1368
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2748
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1736
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1344
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1812
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
453B
MD552ee3e2e2c5c7b94f1042083dfc0644f
SHA1678812c4250409788ecc4d0c5fc3e5d3df687c89
SHA256793516de44fd04cb186cb06b3c9bf8f441f7dd96488c71819c59138002287124
SHA5123e453fcf963ba80209d2dbfb3f9d5ec33ef9f2f57d8e5c7e1ae89b58ae3a7246914b4324676e2f229c73271fa0ffda538f8df0559e100230d366652e86693bfd
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Filesize
440KB
MD577d67233128926082858536211d16c75
SHA1f64cfe2bda7787646ca037f9422f8c2663032d42
SHA2563469bb786be861e7d9afbfd51b1e6c31870d0b83272d085f59c25969bcaf1313
SHA512777720b9d726ab673a1ee6a0ef16320cf7ce1855e6ded788da6b0182f831ed9546164168d5da78b0962c01ed5df539c7ab6f966a150defdc60ba205b32fc6c16
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0