Analysis
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max time kernel
119s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
25-08-2024 13:29
Behavioral task
behavioral1
Sample
20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe
Resource
win10v2004-20240802-en
General
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Target
20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe
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Size
27KB
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MD5
805d5b6a04bc59a03b0a5b957f29c43d
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SHA1
7eb6b748decf4e07c0a346af92ac25bc00e536a6
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SHA256
5eef7f1b2ab55c74bcb21c2049e426b1fd6eb72c5e6bbe9b02bc59671f08938f
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SHA512
94840fad346fda35b0b2c250f8e3966978a29f3cef4e29c575744c6f3cd6f9afd0d50a168e6496ac85950489d5bc0751f455b37eff8fd8721847df8f7856b37b
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SSDEEP
384:utWZPzzxAm1vp5ZRoDNhvLKeOS2NiCXlKOy5o91A0GpL82v5:z7zxAmpfyzeeOSSiNho9+R82R
Malware Config
Extracted
C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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/1928-1-0x0000000001090000-0x000000000109E000-memory.dmp family_chaos behavioral1/files/0x0009000000016c1f-6.dat family_chaos behavioral1/memory/2176-8-0x00000000008D0000-0x00000000008DE000-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 2960 bcdedit.exe 592 bcdedit.exe -
pid Process 2724 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 2176 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-1-5-21-2212144002-1172735686-1556890956-1000\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\Admin\AppData\Roaming\Microsoft\Windows\SendTo\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\Pictures\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\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\CGY9ZAGI\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\Recorded TV\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\Feeds Cache\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\All Users\Microsoft\Windows\Start Menu\Programs\Games\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\Recent\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\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\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\Public\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\Music\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\AppData\Local\Microsoft\Feeds Cache\OORJZY5Z\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\UGUBWRQR\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\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Burn\Burn\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\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\Admin\AppData\Local\Microsoft\Feeds Cache\TWVGEE8A\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\Public\Libraries\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\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\U42VY3XA\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\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\VUPQHL12\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4NH6FMWO\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini 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 2656 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1184 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2176 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1928 20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe 1928 20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe 1928 20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe 2176 svchost.exe 2176 svchost.exe 2176 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1928 20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe Token: SeDebugPrivilege 2176 svchost.exe Token: SeBackupPrivilege 2784 vssvc.exe Token: SeRestorePrivilege 2784 vssvc.exe Token: SeAuditPrivilege 2784 vssvc.exe Token: SeIncreaseQuotaPrivilege 3068 WMIC.exe Token: SeSecurityPrivilege 3068 WMIC.exe Token: SeTakeOwnershipPrivilege 3068 WMIC.exe Token: SeLoadDriverPrivilege 3068 WMIC.exe Token: SeSystemProfilePrivilege 3068 WMIC.exe Token: SeSystemtimePrivilege 3068 WMIC.exe Token: SeProfSingleProcessPrivilege 3068 WMIC.exe Token: SeIncBasePriorityPrivilege 3068 WMIC.exe Token: SeCreatePagefilePrivilege 3068 WMIC.exe Token: SeBackupPrivilege 3068 WMIC.exe Token: SeRestorePrivilege 3068 WMIC.exe Token: SeShutdownPrivilege 3068 WMIC.exe Token: SeDebugPrivilege 3068 WMIC.exe Token: SeSystemEnvironmentPrivilege 3068 WMIC.exe Token: SeRemoteShutdownPrivilege 3068 WMIC.exe Token: SeUndockPrivilege 3068 WMIC.exe Token: SeManageVolumePrivilege 3068 WMIC.exe Token: 33 3068 WMIC.exe Token: 34 3068 WMIC.exe Token: 35 3068 WMIC.exe Token: SeIncreaseQuotaPrivilege 3068 WMIC.exe Token: SeSecurityPrivilege 3068 WMIC.exe Token: SeTakeOwnershipPrivilege 3068 WMIC.exe Token: SeLoadDriverPrivilege 3068 WMIC.exe Token: SeSystemProfilePrivilege 3068 WMIC.exe Token: SeSystemtimePrivilege 3068 WMIC.exe Token: SeProfSingleProcessPrivilege 3068 WMIC.exe Token: SeIncBasePriorityPrivilege 3068 WMIC.exe Token: SeCreatePagefilePrivilege 3068 WMIC.exe Token: SeBackupPrivilege 3068 WMIC.exe Token: SeRestorePrivilege 3068 WMIC.exe Token: SeShutdownPrivilege 3068 WMIC.exe Token: SeDebugPrivilege 3068 WMIC.exe Token: SeSystemEnvironmentPrivilege 3068 WMIC.exe Token: SeRemoteShutdownPrivilege 3068 WMIC.exe Token: SeUndockPrivilege 3068 WMIC.exe Token: SeManageVolumePrivilege 3068 WMIC.exe Token: 33 3068 WMIC.exe Token: 34 3068 WMIC.exe Token: 35 3068 WMIC.exe Token: SeBackupPrivilege 1232 wbengine.exe Token: SeRestorePrivilege 1232 wbengine.exe Token: SeSecurityPrivilege 1232 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1928 wrote to memory of 2176 1928 20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe 30 PID 1928 wrote to memory of 2176 1928 20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe 30 PID 1928 wrote to memory of 2176 1928 20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe 30 PID 2176 wrote to memory of 2704 2176 svchost.exe 31 PID 2176 wrote to memory of 2704 2176 svchost.exe 31 PID 2176 wrote to memory of 2704 2176 svchost.exe 31 PID 2704 wrote to memory of 2656 2704 cmd.exe 33 PID 2704 wrote to memory of 2656 2704 cmd.exe 33 PID 2704 wrote to memory of 2656 2704 cmd.exe 33 PID 2704 wrote to memory of 3068 2704 cmd.exe 36 PID 2704 wrote to memory of 3068 2704 cmd.exe 36 PID 2704 wrote to memory of 3068 2704 cmd.exe 36 PID 2176 wrote to memory of 2948 2176 svchost.exe 38 PID 2176 wrote to memory of 2948 2176 svchost.exe 38 PID 2176 wrote to memory of 2948 2176 svchost.exe 38 PID 2948 wrote to memory of 2960 2948 cmd.exe 40 PID 2948 wrote to memory of 2960 2948 cmd.exe 40 PID 2948 wrote to memory of 2960 2948 cmd.exe 40 PID 2948 wrote to memory of 592 2948 cmd.exe 41 PID 2948 wrote to memory of 592 2948 cmd.exe 41 PID 2948 wrote to memory of 592 2948 cmd.exe 41 PID 2176 wrote to memory of 2752 2176 svchost.exe 42 PID 2176 wrote to memory of 2752 2176 svchost.exe 42 PID 2176 wrote to memory of 2752 2176 svchost.exe 42 PID 2752 wrote to memory of 2724 2752 cmd.exe 44 PID 2752 wrote to memory of 2724 2752 cmd.exe 44 PID 2752 wrote to memory of 2724 2752 cmd.exe 44 PID 2176 wrote to memory of 1184 2176 svchost.exe 49 PID 2176 wrote to memory of 1184 2176 svchost.exe 49 PID 2176 wrote to memory of 1184 2176 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\20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe"C:\Users\Admin\AppData\Local\Temp\20240825805d5b6a04bc59a03b0a5b957f29c43ddestroyerwannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1928 -
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)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2704 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2656
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3068
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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:2948 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2960
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:592
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2752 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2724
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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:1184
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2784
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1232
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2124
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1968
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
27KB
MD5805d5b6a04bc59a03b0a5b957f29c43d
SHA17eb6b748decf4e07c0a346af92ac25bc00e536a6
SHA2565eef7f1b2ab55c74bcb21c2049e426b1fd6eb72c5e6bbe9b02bc59671f08938f
SHA51294840fad346fda35b0b2c250f8e3966978a29f3cef4e29c575744c6f3cd6f9afd0d50a168e6496ac85950489d5bc0751f455b37eff8fd8721847df8f7856b37b
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Filesize
582B
MD5ed5cc52876db869de48a4783069c2a5e
SHA1a9d51ceaeff715ace430f9462ab2ee4e7f33e70e
SHA25645726f2f29967ef016f8d556fb6468a577307d67388cc4530295a9ca10fdfa36
SHA5121745aefb9b4db4cdd7c08ee3a7d133db08f35a336fd18b598211519b481ef25ac84a3e8a3da3db06caef9f531288d1cf0ca8d4b2560637945e7953e8b45421f5
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0