Analysis
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max time kernel
119s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
29-08-2024 13:36
Behavioral task
behavioral1
Sample
2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe
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Size
96KB
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MD5
b2692504c14981764eba95b5cda1aac8
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SHA1
f35d3653f2c166caea51977042877cb6e1544b85
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SHA256
6e951ec3eefa660258a0e12350e3e477348467f15feb77b71b5a89c73532ce8a
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SHA512
66c73af4e0db0463c46bb7443c56eeac1dded76f19d7512be287c944944e753c2db8d4ebe523493f39a70965c27c5c51ec1d44eb286ed70319e775b35cdd2b33
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SSDEEP
1536:dNpn7Ddnq9VXNlEOr/9bq9q7ExehRN2Qk4BHqhiGgiFMzLPwiSfiKxNXCGEP9jFY:Rndnq9VdMtj
Malware Config
Extracted
C:\ProgramData\Adobe\Updater6\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/2280-1-0x00000000001C0000-0x00000000001DE000-memory.dmp family_chaos behavioral1/files/0x000700000001211a-5.dat family_chaos behavioral1/memory/2816-7-0x0000000000880000-0x000000000089E000-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 2456 bcdedit.exe 784 bcdedit.exe -
pid Process 2952 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 2816 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-1-5-21-3434294380-2554721341-1919518612-1000\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\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\BNS2IARI\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\84790KOV\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\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\Searches\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\Videos\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\Public\Music\Sample Music\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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\Windows\Temporary Internet Files\Content.IE5\48RNM7SN\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\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\XW1885AL\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BRLV7L3G\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Games\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\Local\Microsoft\Windows\Temporary Internet Files\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\Feeds Cache\3CPCT0UC\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\JF1SL0MP\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\Accessibility\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\Music\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\History\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\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\Public\Downloads\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 F:\$RECYCLE.BIN\S-1-5-21-3434294380-2554721341-1919518612-1000\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\Default\AppData\Roaming\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\All Users\Microsoft\Windows\Start Menu\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\Downloads\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\SendTo\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\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\knojbvpty.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 2780 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1632 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2816 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2280 2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe 2280 2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe 2280 2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe 2816 svchost.exe 2816 svchost.exe 2816 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2280 2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe Token: SeDebugPrivilege 2816 svchost.exe Token: SeBackupPrivilege 2824 vssvc.exe Token: SeRestorePrivilege 2824 vssvc.exe Token: SeAuditPrivilege 2824 vssvc.exe Token: SeIncreaseQuotaPrivilege 2088 WMIC.exe Token: SeSecurityPrivilege 2088 WMIC.exe Token: SeTakeOwnershipPrivilege 2088 WMIC.exe Token: SeLoadDriverPrivilege 2088 WMIC.exe Token: SeSystemProfilePrivilege 2088 WMIC.exe Token: SeSystemtimePrivilege 2088 WMIC.exe Token: SeProfSingleProcessPrivilege 2088 WMIC.exe Token: SeIncBasePriorityPrivilege 2088 WMIC.exe Token: SeCreatePagefilePrivilege 2088 WMIC.exe Token: SeBackupPrivilege 2088 WMIC.exe Token: SeRestorePrivilege 2088 WMIC.exe Token: SeShutdownPrivilege 2088 WMIC.exe Token: SeDebugPrivilege 2088 WMIC.exe Token: SeSystemEnvironmentPrivilege 2088 WMIC.exe Token: SeRemoteShutdownPrivilege 2088 WMIC.exe Token: SeUndockPrivilege 2088 WMIC.exe Token: SeManageVolumePrivilege 2088 WMIC.exe Token: 33 2088 WMIC.exe Token: 34 2088 WMIC.exe Token: 35 2088 WMIC.exe Token: SeIncreaseQuotaPrivilege 2088 WMIC.exe Token: SeSecurityPrivilege 2088 WMIC.exe Token: SeTakeOwnershipPrivilege 2088 WMIC.exe Token: SeLoadDriverPrivilege 2088 WMIC.exe Token: SeSystemProfilePrivilege 2088 WMIC.exe Token: SeSystemtimePrivilege 2088 WMIC.exe Token: SeProfSingleProcessPrivilege 2088 WMIC.exe Token: SeIncBasePriorityPrivilege 2088 WMIC.exe Token: SeCreatePagefilePrivilege 2088 WMIC.exe Token: SeBackupPrivilege 2088 WMIC.exe Token: SeRestorePrivilege 2088 WMIC.exe Token: SeShutdownPrivilege 2088 WMIC.exe Token: SeDebugPrivilege 2088 WMIC.exe Token: SeSystemEnvironmentPrivilege 2088 WMIC.exe Token: SeRemoteShutdownPrivilege 2088 WMIC.exe Token: SeUndockPrivilege 2088 WMIC.exe Token: SeManageVolumePrivilege 2088 WMIC.exe Token: 33 2088 WMIC.exe Token: 34 2088 WMIC.exe Token: 35 2088 WMIC.exe Token: SeBackupPrivilege 1880 wbengine.exe Token: SeRestorePrivilege 1880 wbengine.exe Token: SeSecurityPrivilege 1880 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2280 wrote to memory of 2816 2280 2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe 30 PID 2280 wrote to memory of 2816 2280 2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe 30 PID 2280 wrote to memory of 2816 2280 2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe 30 PID 2816 wrote to memory of 2264 2816 svchost.exe 31 PID 2816 wrote to memory of 2264 2816 svchost.exe 31 PID 2816 wrote to memory of 2264 2816 svchost.exe 31 PID 2264 wrote to memory of 2780 2264 cmd.exe 33 PID 2264 wrote to memory of 2780 2264 cmd.exe 33 PID 2264 wrote to memory of 2780 2264 cmd.exe 33 PID 2264 wrote to memory of 2088 2264 cmd.exe 36 PID 2264 wrote to memory of 2088 2264 cmd.exe 36 PID 2264 wrote to memory of 2088 2264 cmd.exe 36 PID 2816 wrote to memory of 2076 2816 svchost.exe 38 PID 2816 wrote to memory of 2076 2816 svchost.exe 38 PID 2816 wrote to memory of 2076 2816 svchost.exe 38 PID 2076 wrote to memory of 2456 2076 cmd.exe 40 PID 2076 wrote to memory of 2456 2076 cmd.exe 40 PID 2076 wrote to memory of 2456 2076 cmd.exe 40 PID 2076 wrote to memory of 784 2076 cmd.exe 41 PID 2076 wrote to memory of 784 2076 cmd.exe 41 PID 2076 wrote to memory of 784 2076 cmd.exe 41 PID 2816 wrote to memory of 2084 2816 svchost.exe 42 PID 2816 wrote to memory of 2084 2816 svchost.exe 42 PID 2816 wrote to memory of 2084 2816 svchost.exe 42 PID 2084 wrote to memory of 2952 2084 cmd.exe 44 PID 2084 wrote to memory of 2952 2084 cmd.exe 44 PID 2084 wrote to memory of 2952 2084 cmd.exe 44 PID 2816 wrote to memory of 1632 2816 svchost.exe 49 PID 2816 wrote to memory of 1632 2816 svchost.exe 49 PID 2816 wrote to memory of 1632 2816 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\2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-29_b2692504c14981764eba95b5cda1aac8_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2280 -
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:2816 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2264 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2780
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2088
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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:2076 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2456
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:784
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2084 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2952
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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:1632
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2824
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1880
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2948
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2172
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
582B
MD5ed5cc52876db869de48a4783069c2a5e
SHA1a9d51ceaeff715ace430f9462ab2ee4e7f33e70e
SHA25645726f2f29967ef016f8d556fb6468a577307d67388cc4530295a9ca10fdfa36
SHA5121745aefb9b4db4cdd7c08ee3a7d133db08f35a336fd18b598211519b481ef25ac84a3e8a3da3db06caef9f531288d1cf0ca8d4b2560637945e7953e8b45421f5
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Filesize
96KB
MD5b2692504c14981764eba95b5cda1aac8
SHA1f35d3653f2c166caea51977042877cb6e1544b85
SHA2566e951ec3eefa660258a0e12350e3e477348467f15feb77b71b5a89c73532ce8a
SHA51266c73af4e0db0463c46bb7443c56eeac1dded76f19d7512be287c944944e753c2db8d4ebe523493f39a70965c27c5c51ec1d44eb286ed70319e775b35cdd2b33
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0