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Analysis
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max time kernel
118s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
30/07/2024, 07:27
Behavioral task
behavioral1
Sample
2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe
Resource
win10v2004-20240709-en
General
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Target
2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe
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Size
388KB
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MD5
8798c00ba8b599989cc3a06da8c28a6e
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SHA1
e79dbefc0b3747ec1767679e273c3f049143179a
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SHA256
41bf69dda3999dc09e8cccf7475ecd7a000b64cdfc1c462672eb9dc7e42d21a9
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SHA512
9bfaeb723104771001e9dbfbab81196a99ac2fe2f0fb9dc5cd5966941594b42ddfc91b1c182fda9c3f1c186187b7642edd149e0763b99def9d34a5104e4789b2
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SSDEEP
12288:Ms48+MRhQbpN9++qzKdSxs23to2G4LyGA6Jyx:MszuCsi
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/3012-1-0x00000000013E0000-0x0000000001448000-memory.dmp family_chaos behavioral1/files/0x00070000000120fb-6.dat family_chaos behavioral1/memory/1736-8-0x0000000001000000-0x0000000001068000-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 3044 bcdedit.exe 2476 bcdedit.exe -
pid Process 2536 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1736 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-1-5-21-2172136094-3310281978-782691160-1000\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\Administrative Tools\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\Temporary Internet Files\Content.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\Maintenance\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\Videos\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\Feeds Cache\14COEDY0\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\Feeds Cache\PTDOBUC5\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\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\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\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\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\VWALZE0J\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\TRGVI5NS\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\2ZHYLHR6\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\4EUU1BCC\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Windows PowerShell\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\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\SendTo\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\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\Windows\History\History.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\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\Local\Microsoft\Windows\Burn\Burn\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\All Users\Microsoft\Windows\Ringtones\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\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\Public\Desktop\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2172136094-3310281978-782691160-1000\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\OGSZAF0D\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\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\Accessibility\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\Windows\Temporary Internet Files\Content.IE5\7L3YTUQC\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\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2z3cc6dlb.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 1608 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2680 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1736 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3012 2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe 3012 2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe 3012 2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe 1736 svchost.exe 1736 svchost.exe 1736 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 3012 2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe Token: SeDebugPrivilege 1736 svchost.exe Token: SeBackupPrivilege 2544 vssvc.exe Token: SeRestorePrivilege 2544 vssvc.exe Token: SeAuditPrivilege 2544 vssvc.exe Token: SeIncreaseQuotaPrivilege 352 WMIC.exe Token: SeSecurityPrivilege 352 WMIC.exe Token: SeTakeOwnershipPrivilege 352 WMIC.exe Token: SeLoadDriverPrivilege 352 WMIC.exe Token: SeSystemProfilePrivilege 352 WMIC.exe Token: SeSystemtimePrivilege 352 WMIC.exe Token: SeProfSingleProcessPrivilege 352 WMIC.exe Token: SeIncBasePriorityPrivilege 352 WMIC.exe Token: SeCreatePagefilePrivilege 352 WMIC.exe Token: SeBackupPrivilege 352 WMIC.exe Token: SeRestorePrivilege 352 WMIC.exe Token: SeShutdownPrivilege 352 WMIC.exe Token: SeDebugPrivilege 352 WMIC.exe Token: SeSystemEnvironmentPrivilege 352 WMIC.exe Token: SeRemoteShutdownPrivilege 352 WMIC.exe Token: SeUndockPrivilege 352 WMIC.exe Token: SeManageVolumePrivilege 352 WMIC.exe Token: 33 352 WMIC.exe Token: 34 352 WMIC.exe Token: 35 352 WMIC.exe Token: SeIncreaseQuotaPrivilege 352 WMIC.exe Token: SeSecurityPrivilege 352 WMIC.exe Token: SeTakeOwnershipPrivilege 352 WMIC.exe Token: SeLoadDriverPrivilege 352 WMIC.exe Token: SeSystemProfilePrivilege 352 WMIC.exe Token: SeSystemtimePrivilege 352 WMIC.exe Token: SeProfSingleProcessPrivilege 352 WMIC.exe Token: SeIncBasePriorityPrivilege 352 WMIC.exe Token: SeCreatePagefilePrivilege 352 WMIC.exe Token: SeBackupPrivilege 352 WMIC.exe Token: SeRestorePrivilege 352 WMIC.exe Token: SeShutdownPrivilege 352 WMIC.exe Token: SeDebugPrivilege 352 WMIC.exe Token: SeSystemEnvironmentPrivilege 352 WMIC.exe Token: SeRemoteShutdownPrivilege 352 WMIC.exe Token: SeUndockPrivilege 352 WMIC.exe Token: SeManageVolumePrivilege 352 WMIC.exe Token: 33 352 WMIC.exe Token: 34 352 WMIC.exe Token: 35 352 WMIC.exe Token: SeBackupPrivilege 2768 wbengine.exe Token: SeRestorePrivilege 2768 wbengine.exe Token: SeSecurityPrivilege 2768 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 3012 wrote to memory of 1736 3012 2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe 30 PID 3012 wrote to memory of 1736 3012 2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe 30 PID 3012 wrote to memory of 1736 3012 2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe 30 PID 1736 wrote to memory of 2024 1736 svchost.exe 31 PID 1736 wrote to memory of 2024 1736 svchost.exe 31 PID 1736 wrote to memory of 2024 1736 svchost.exe 31 PID 2024 wrote to memory of 1608 2024 cmd.exe 33 PID 2024 wrote to memory of 1608 2024 cmd.exe 33 PID 2024 wrote to memory of 1608 2024 cmd.exe 33 PID 2024 wrote to memory of 352 2024 cmd.exe 36 PID 2024 wrote to memory of 352 2024 cmd.exe 36 PID 2024 wrote to memory of 352 2024 cmd.exe 36 PID 1736 wrote to memory of 2556 1736 svchost.exe 38 PID 1736 wrote to memory of 2556 1736 svchost.exe 38 PID 1736 wrote to memory of 2556 1736 svchost.exe 38 PID 2556 wrote to memory of 3044 2556 cmd.exe 40 PID 2556 wrote to memory of 3044 2556 cmd.exe 40 PID 2556 wrote to memory of 3044 2556 cmd.exe 40 PID 2556 wrote to memory of 2476 2556 cmd.exe 41 PID 2556 wrote to memory of 2476 2556 cmd.exe 41 PID 2556 wrote to memory of 2476 2556 cmd.exe 41 PID 1736 wrote to memory of 2328 1736 svchost.exe 42 PID 1736 wrote to memory of 2328 1736 svchost.exe 42 PID 1736 wrote to memory of 2328 1736 svchost.exe 42 PID 2328 wrote to memory of 2536 2328 cmd.exe 44 PID 2328 wrote to memory of 2536 2328 cmd.exe 44 PID 2328 wrote to memory of 2536 2328 cmd.exe 44 PID 1736 wrote to memory of 2680 1736 svchost.exe 49 PID 1736 wrote to memory of 2680 1736 svchost.exe 49 PID 1736 wrote to memory of 2680 1736 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\2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-30_8798c00ba8b599989cc3a06da8c28a6e_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3012 -
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:1736 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1608
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:352
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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:2556 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3044
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2476
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2328 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2536
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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:2680
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2544
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2768
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2856
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2764
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
388KB
MD58798c00ba8b599989cc3a06da8c28a6e
SHA1e79dbefc0b3747ec1767679e273c3f049143179a
SHA25641bf69dda3999dc09e8cccf7475ecd7a000b64cdfc1c462672eb9dc7e42d21a9
SHA5129bfaeb723104771001e9dbfbab81196a99ac2fe2f0fb9dc5cd5966941594b42ddfc91b1c182fda9c3f1c186187b7642edd149e0763b99def9d34a5104e4789b2
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0