Analysis
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max time kernel
118s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
09-07-2024 15:12
Behavioral task
behavioral1
Sample
2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe
Resource
win10v2004-20240704-en
General
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Target
2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe
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Size
263KB
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MD5
dc884e3241e125218d69f53f400e8442
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SHA1
8687422a10ad022925c19c2719381e8bd169331c
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SHA256
0bf9b5ef693b11181d39deb87556e8f8dfbf7f617c13bd2602547ae73c4fd1e9
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SHA512
7a34d84e3458ba7da67bd9d9dba797c4b4be000fe8b261feb3b3f10525eaace4a74aa28ba35ac439e934d5f65bd3d44eb09c33a35d96a37de777c008032ce4c6
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SSDEEP
3072:Dcq9wqyZnCboGSqihQ5Mk/EHCSQ9IiNP8Q1fBLe8vQQ7b8lW76+zGklGT5Ckn/dN:Dcq9HScRiDH6b/e8/8li3GXuE3y74
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/1664-1-0x0000000000960000-0x00000000009A8000-memory.dmp family_chaos behavioral1/files/0x0004000000004ed7-8.dat family_chaos behavioral1/memory/2796-10-0x0000000001260000-0x00000000012A8000-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 2004 bcdedit.exe 2020 bcdedit.exe -
pid Process 1464 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 2796 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-1-5-21-940600906-3464502421-4240639183-1000\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\AppData\Local\Microsoft\Feeds Cache\CDYA2V22\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\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\VS57P4WV\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\Windows\Start Menu\Programs\Accessories\Accessibility\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\BIXBDSBU\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\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\Public\Recorded TV\Sample Media\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\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\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\I2MIHKBD\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\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-940600906-3464502421-4240639183-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\5KCSK57A\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\Startup\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\XR0R6AOK\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\Libraries\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\Favorites\Links\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\Public\Desktop\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\Recorded TV\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\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\Content.IE5\542OWCDO\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\Music\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\History\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\I17U52WV\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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 Mail\Stationery\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\cttmljpg0.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 2648 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1720 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 1664 2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe 2796 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1664 2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe 1664 2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe 1664 2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe 2796 svchost.exe 2796 svchost.exe 2796 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1664 2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe Token: SeDebugPrivilege 2796 svchost.exe Token: SeBackupPrivilege 2116 vssvc.exe Token: SeRestorePrivilege 2116 vssvc.exe Token: SeAuditPrivilege 2116 vssvc.exe Token: SeIncreaseQuotaPrivilege 1072 WMIC.exe Token: SeSecurityPrivilege 1072 WMIC.exe Token: SeTakeOwnershipPrivilege 1072 WMIC.exe Token: SeLoadDriverPrivilege 1072 WMIC.exe Token: SeSystemProfilePrivilege 1072 WMIC.exe Token: SeSystemtimePrivilege 1072 WMIC.exe Token: SeProfSingleProcessPrivilege 1072 WMIC.exe Token: SeIncBasePriorityPrivilege 1072 WMIC.exe Token: SeCreatePagefilePrivilege 1072 WMIC.exe Token: SeBackupPrivilege 1072 WMIC.exe Token: SeRestorePrivilege 1072 WMIC.exe Token: SeShutdownPrivilege 1072 WMIC.exe Token: SeDebugPrivilege 1072 WMIC.exe Token: SeSystemEnvironmentPrivilege 1072 WMIC.exe Token: SeRemoteShutdownPrivilege 1072 WMIC.exe Token: SeUndockPrivilege 1072 WMIC.exe Token: SeManageVolumePrivilege 1072 WMIC.exe Token: 33 1072 WMIC.exe Token: 34 1072 WMIC.exe Token: 35 1072 WMIC.exe Token: SeIncreaseQuotaPrivilege 1072 WMIC.exe Token: SeSecurityPrivilege 1072 WMIC.exe Token: SeTakeOwnershipPrivilege 1072 WMIC.exe Token: SeLoadDriverPrivilege 1072 WMIC.exe Token: SeSystemProfilePrivilege 1072 WMIC.exe Token: SeSystemtimePrivilege 1072 WMIC.exe Token: SeProfSingleProcessPrivilege 1072 WMIC.exe Token: SeIncBasePriorityPrivilege 1072 WMIC.exe Token: SeCreatePagefilePrivilege 1072 WMIC.exe Token: SeBackupPrivilege 1072 WMIC.exe Token: SeRestorePrivilege 1072 WMIC.exe Token: SeShutdownPrivilege 1072 WMIC.exe Token: SeDebugPrivilege 1072 WMIC.exe Token: SeSystemEnvironmentPrivilege 1072 WMIC.exe Token: SeRemoteShutdownPrivilege 1072 WMIC.exe Token: SeUndockPrivilege 1072 WMIC.exe Token: SeManageVolumePrivilege 1072 WMIC.exe Token: 33 1072 WMIC.exe Token: 34 1072 WMIC.exe Token: 35 1072 WMIC.exe Token: SeBackupPrivilege 1896 wbengine.exe Token: SeRestorePrivilege 1896 wbengine.exe Token: SeSecurityPrivilege 1896 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1664 wrote to memory of 2796 1664 2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe 31 PID 1664 wrote to memory of 2796 1664 2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe 31 PID 1664 wrote to memory of 2796 1664 2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe 31 PID 2796 wrote to memory of 2572 2796 svchost.exe 32 PID 2796 wrote to memory of 2572 2796 svchost.exe 32 PID 2796 wrote to memory of 2572 2796 svchost.exe 32 PID 2572 wrote to memory of 2648 2572 cmd.exe 34 PID 2572 wrote to memory of 2648 2572 cmd.exe 34 PID 2572 wrote to memory of 2648 2572 cmd.exe 34 PID 2572 wrote to memory of 1072 2572 cmd.exe 37 PID 2572 wrote to memory of 1072 2572 cmd.exe 37 PID 2572 wrote to memory of 1072 2572 cmd.exe 37 PID 2796 wrote to memory of 1592 2796 svchost.exe 39 PID 2796 wrote to memory of 1592 2796 svchost.exe 39 PID 2796 wrote to memory of 1592 2796 svchost.exe 39 PID 1592 wrote to memory of 2004 1592 cmd.exe 41 PID 1592 wrote to memory of 2004 1592 cmd.exe 41 PID 1592 wrote to memory of 2004 1592 cmd.exe 41 PID 1592 wrote to memory of 2020 1592 cmd.exe 42 PID 1592 wrote to memory of 2020 1592 cmd.exe 42 PID 1592 wrote to memory of 2020 1592 cmd.exe 42 PID 2796 wrote to memory of 2672 2796 svchost.exe 43 PID 2796 wrote to memory of 2672 2796 svchost.exe 43 PID 2796 wrote to memory of 2672 2796 svchost.exe 43 PID 2672 wrote to memory of 1464 2672 cmd.exe 45 PID 2672 wrote to memory of 1464 2672 cmd.exe 45 PID 2672 wrote to memory of 1464 2672 cmd.exe 45 PID 2796 wrote to memory of 1720 2796 svchost.exe 50 PID 2796 wrote to memory of 1720 2796 svchost.exe 50 PID 2796 wrote to memory of 1720 2796 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\2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-09_dc884e3241e125218d69f53f400e8442_wannacry.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1664 -
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:2796 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2572 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2648
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1072
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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:1592 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2004
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2020
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2672 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1464
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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:1720
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2116
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1896
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2332
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2088
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
263KB
MD5dc884e3241e125218d69f53f400e8442
SHA18687422a10ad022925c19c2719381e8bd169331c
SHA2560bf9b5ef693b11181d39deb87556e8f8dfbf7f617c13bd2602547ae73c4fd1e9
SHA5127a34d84e3458ba7da67bd9d9dba797c4b4be000fe8b261feb3b3f10525eaace4a74aa28ba35ac439e934d5f65bd3d44eb09c33a35d96a37de777c008032ce4c6
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0