Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
25-01-2025 18:47
Behavioral task
behavioral1
Sample
2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe
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Size
619KB
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MD5
87ed765171e1a1bcad9a331bfa094360
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SHA1
7db04b4b6e6f6246ab830367996e3a2ccfa0799f
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SHA256
441c1aa1a603a4f77a118d5469ff8a6f8346b7f3225cbba7f3f726ec734aeb5c
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SHA512
17af72c21461e97e274e6178b92d84c94c41cedcd4a8f46edd47e08482bcc32dd40eed4dc7f466392b57ed3cc5a22d61ff078ebfdc18e82e943c7b7faf2f1541
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SSDEEP
12288:u+dknyzlV0tt5IbDEylitqURFiUq1wWmCdZ75UJTAEXNwcyvoKe47H:lsDTYDJRW
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/2156-1-0x0000000000B50000-0x0000000000BF0000-memory.dmp family_chaos behavioral1/files/0x0007000000012117-5.dat family_chaos behavioral1/memory/2576-7-0x0000000000A90000-0x0000000000B30000-memory.dmp family_chaos -
Chaos family
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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 2624 bcdedit.exe 1952 bcdedit.exe -
pid Process 1464 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.url System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini System.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Dark101_read_it.txt System.exe -
Executes dropped EXE 1 IoCs
pid Process 2576 System.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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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 System.exe File opened for modification C:\Users\Public\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\HE9LBEC2\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini System.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini System.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini System.exe File opened for modification C:\Users\Admin\Links\desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini System.exe File opened for modification C:\Users\Public\Pictures\desktop.ini System.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini System.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini System.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini System.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini System.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini System.exe File opened for modification C:\Users\Admin\Videos\desktop.ini System.exe File opened for modification C:\Users\Public\Desktop\desktop.ini System.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\QJELLEL3\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\Y3Z0XF05\desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\desktop.ini System.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini System.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini System.exe File opened for modification C:\Users\Admin\Documents\desktop.ini System.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini System.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini System.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\8NROS34R\desktop.ini System.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini System.exe File opened for modification C:\Users\Admin\Music\desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini System.exe File opened for modification C:\Users\Public\Music\desktop.ini System.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3290804112-2823094203-3137964600-1000\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\YLJ4V77F\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini System.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\RM4QEUM4\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini System.exe File opened for modification C:\Users\Admin\Searches\desktop.ini System.exe File opened for modification C:\Users\Public\Documents\desktop.ini System.exe File opened for modification C:\Users\Public\Downloads\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini System.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\HWUYADN5\desktop.ini System.exe File opened for modification C:\Users\Public\Videos\desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini System.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini System.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\skpxlv1vz.jpg" System.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 2700 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1728 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2576 System.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2156 2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe 2156 2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe 2156 2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe 2576 System.exe 2576 System.exe 2576 System.exe 2576 System.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2156 2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe Token: SeDebugPrivilege 2576 System.exe Token: SeBackupPrivilege 2796 vssvc.exe Token: SeRestorePrivilege 2796 vssvc.exe Token: SeAuditPrivilege 2796 vssvc.exe Token: SeIncreaseQuotaPrivilege 2832 WMIC.exe Token: SeSecurityPrivilege 2832 WMIC.exe Token: SeTakeOwnershipPrivilege 2832 WMIC.exe Token: SeLoadDriverPrivilege 2832 WMIC.exe Token: SeSystemProfilePrivilege 2832 WMIC.exe Token: SeSystemtimePrivilege 2832 WMIC.exe Token: SeProfSingleProcessPrivilege 2832 WMIC.exe Token: SeIncBasePriorityPrivilege 2832 WMIC.exe Token: SeCreatePagefilePrivilege 2832 WMIC.exe Token: SeBackupPrivilege 2832 WMIC.exe Token: SeRestorePrivilege 2832 WMIC.exe Token: SeShutdownPrivilege 2832 WMIC.exe Token: SeDebugPrivilege 2832 WMIC.exe Token: SeSystemEnvironmentPrivilege 2832 WMIC.exe Token: SeRemoteShutdownPrivilege 2832 WMIC.exe Token: SeUndockPrivilege 2832 WMIC.exe Token: SeManageVolumePrivilege 2832 WMIC.exe Token: 33 2832 WMIC.exe Token: 34 2832 WMIC.exe Token: 35 2832 WMIC.exe Token: SeIncreaseQuotaPrivilege 2832 WMIC.exe Token: SeSecurityPrivilege 2832 WMIC.exe Token: SeTakeOwnershipPrivilege 2832 WMIC.exe Token: SeLoadDriverPrivilege 2832 WMIC.exe Token: SeSystemProfilePrivilege 2832 WMIC.exe Token: SeSystemtimePrivilege 2832 WMIC.exe Token: SeProfSingleProcessPrivilege 2832 WMIC.exe Token: SeIncBasePriorityPrivilege 2832 WMIC.exe Token: SeCreatePagefilePrivilege 2832 WMIC.exe Token: SeBackupPrivilege 2832 WMIC.exe Token: SeRestorePrivilege 2832 WMIC.exe Token: SeShutdownPrivilege 2832 WMIC.exe Token: SeDebugPrivilege 2832 WMIC.exe Token: SeSystemEnvironmentPrivilege 2832 WMIC.exe Token: SeRemoteShutdownPrivilege 2832 WMIC.exe Token: SeUndockPrivilege 2832 WMIC.exe Token: SeManageVolumePrivilege 2832 WMIC.exe Token: 33 2832 WMIC.exe Token: 34 2832 WMIC.exe Token: 35 2832 WMIC.exe Token: SeBackupPrivilege 1272 wbengine.exe Token: SeRestorePrivilege 1272 wbengine.exe Token: SeSecurityPrivilege 1272 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2156 wrote to memory of 2576 2156 2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe 30 PID 2156 wrote to memory of 2576 2156 2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe 30 PID 2156 wrote to memory of 2576 2156 2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe 30 PID 2576 wrote to memory of 2920 2576 System.exe 31 PID 2576 wrote to memory of 2920 2576 System.exe 31 PID 2576 wrote to memory of 2920 2576 System.exe 31 PID 2920 wrote to memory of 2700 2920 cmd.exe 33 PID 2920 wrote to memory of 2700 2920 cmd.exe 33 PID 2920 wrote to memory of 2700 2920 cmd.exe 33 PID 2920 wrote to memory of 2832 2920 cmd.exe 36 PID 2920 wrote to memory of 2832 2920 cmd.exe 36 PID 2920 wrote to memory of 2832 2920 cmd.exe 36 PID 2576 wrote to memory of 2660 2576 System.exe 38 PID 2576 wrote to memory of 2660 2576 System.exe 38 PID 2576 wrote to memory of 2660 2576 System.exe 38 PID 2660 wrote to memory of 2624 2660 cmd.exe 40 PID 2660 wrote to memory of 2624 2660 cmd.exe 40 PID 2660 wrote to memory of 2624 2660 cmd.exe 40 PID 2660 wrote to memory of 1952 2660 cmd.exe 41 PID 2660 wrote to memory of 1952 2660 cmd.exe 41 PID 2660 wrote to memory of 1952 2660 cmd.exe 41 PID 2576 wrote to memory of 1852 2576 System.exe 42 PID 2576 wrote to memory of 1852 2576 System.exe 42 PID 2576 wrote to memory of 1852 2576 System.exe 42 PID 1852 wrote to memory of 1464 1852 cmd.exe 44 PID 1852 wrote to memory of 1464 1852 cmd.exe 44 PID 1852 wrote to memory of 1464 1852 cmd.exe 44 PID 2576 wrote to memory of 1728 2576 System.exe 49 PID 2576 wrote to memory of 1728 2576 System.exe 49 PID 2576 wrote to memory of 1728 2576 System.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\2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-25_87ed765171e1a1bcad9a331bfa094360_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2156 -
C:\Users\Admin\AppData\Roaming\System.exe"C:\Users\Admin\AppData\Roaming\System.exe"2⤵
- Drops startup file
- Executes dropped EXE
- 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:2576 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2920 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2700
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2832
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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:2660 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2624
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1952
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1852 -
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\Dark101_read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:1728
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2796
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1272
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2596
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2836
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
674B
MD58916e1b5e50ccfe7771fdbb8775ced7e
SHA15d41955f8ba51abe56caf50b537aa2c651e32247
SHA25620458d610fa04c336598b4d96fc8eefef7a8b43c6b61a4a7b670646cd56fa132
SHA5120b6caad7cedcd41afb7b210dc8b5515d2a0f73914e5218c903ff78483774fbf6688b1451493c54a8c4125fe8f14dedece7528c1844088fd74e8d31d39474e4b5
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
619KB
MD587ed765171e1a1bcad9a331bfa094360
SHA17db04b4b6e6f6246ab830367996e3a2ccfa0799f
SHA256441c1aa1a603a4f77a118d5469ff8a6f8346b7f3225cbba7f3f726ec734aeb5c
SHA51217af72c21461e97e274e6178b92d84c94c41cedcd4a8f46edd47e08482bcc32dd40eed4dc7f466392b57ed3cc5a22d61ff078ebfdc18e82e943c7b7faf2f1541