Analysis
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max time kernel
122s -
max time network
127s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
19-02-2025 04:55
Behavioral task
behavioral1
Sample
2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe
Resource
win10v2004-20250217-en
General
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Target
2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe
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Size
2.4MB
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MD5
ee93e7fdbd5b2c719a449bd6f20f4470
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SHA1
d72a94fa8008d7cd412717b38481a52aabf69140
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SHA256
3ee96efb06a74e9e6dd975669490a6422373e4ee1858b9779809e2a5668440bf
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SHA512
1de992e6989573d2b2601569878bcd80736d39607905fe08ee933c88409264b9618d225d7df195a84573f33a5dc83adc315e07fc7700a672646883c1c92fb0cc
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SSDEEP
24576:MuaKvKYhkjUKGueMQcvD+96bK+/bAzkKh2fo1MEHY+tvR2lBicNRK:tKhpGd9V4D+Fi0cr
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/2780-1-0x00000000011D0000-0x0000000001446000-memory.dmp family_chaos behavioral1/files/0x00080000000120cd-6.dat family_chaos behavioral1/memory/2760-9-0x0000000001210000-0x0000000001486000-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 1004 bcdedit.exe 2052 bcdedit.exe -
pid Process 828 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\decrypt.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2760 svchost.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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\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\Default\AppData\Roaming\Microsoft\Windows\SendTo\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\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2872745919-2748461613-2989606286-1000\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\Public\Downloads\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Public\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 C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\2DZXJZH2\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\HUSZWRNT\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\History\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\Startup\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\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\F17E26FP\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Windows\Temporary Internet Files\Content.IE5\M1ITRGY5\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\Accessibility\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\AppData\Roaming\Microsoft\Windows\Recent\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\Libraries\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\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\OIPA882W\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\D3UCK9EB\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\Start Menu\Programs\Administrative Tools\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\Games\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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\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\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\8YJ7JBZ2\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\Saved Games\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Burn\Burn\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\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3xxltwngc.jpg" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.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 2560 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1708 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2780 2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe 2760 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2780 2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe 2780 2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe 2780 2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe 2760 svchost.exe 2760 svchost.exe 2760 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2780 2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe Token: SeDebugPrivilege 2760 svchost.exe Token: SeBackupPrivilege 2432 vssvc.exe Token: SeRestorePrivilege 2432 vssvc.exe Token: SeAuditPrivilege 2432 vssvc.exe Token: SeIncreaseQuotaPrivilege 2488 WMIC.exe Token: SeSecurityPrivilege 2488 WMIC.exe Token: SeTakeOwnershipPrivilege 2488 WMIC.exe Token: SeLoadDriverPrivilege 2488 WMIC.exe Token: SeSystemProfilePrivilege 2488 WMIC.exe Token: SeSystemtimePrivilege 2488 WMIC.exe Token: SeProfSingleProcessPrivilege 2488 WMIC.exe Token: SeIncBasePriorityPrivilege 2488 WMIC.exe Token: SeCreatePagefilePrivilege 2488 WMIC.exe Token: SeBackupPrivilege 2488 WMIC.exe Token: SeRestorePrivilege 2488 WMIC.exe Token: SeShutdownPrivilege 2488 WMIC.exe Token: SeDebugPrivilege 2488 WMIC.exe Token: SeSystemEnvironmentPrivilege 2488 WMIC.exe Token: SeRemoteShutdownPrivilege 2488 WMIC.exe Token: SeUndockPrivilege 2488 WMIC.exe Token: SeManageVolumePrivilege 2488 WMIC.exe Token: 33 2488 WMIC.exe Token: 34 2488 WMIC.exe Token: 35 2488 WMIC.exe Token: SeIncreaseQuotaPrivilege 2488 WMIC.exe Token: SeSecurityPrivilege 2488 WMIC.exe Token: SeTakeOwnershipPrivilege 2488 WMIC.exe Token: SeLoadDriverPrivilege 2488 WMIC.exe Token: SeSystemProfilePrivilege 2488 WMIC.exe Token: SeSystemtimePrivilege 2488 WMIC.exe Token: SeProfSingleProcessPrivilege 2488 WMIC.exe Token: SeIncBasePriorityPrivilege 2488 WMIC.exe Token: SeCreatePagefilePrivilege 2488 WMIC.exe Token: SeBackupPrivilege 2488 WMIC.exe Token: SeRestorePrivilege 2488 WMIC.exe Token: SeShutdownPrivilege 2488 WMIC.exe Token: SeDebugPrivilege 2488 WMIC.exe Token: SeSystemEnvironmentPrivilege 2488 WMIC.exe Token: SeRemoteShutdownPrivilege 2488 WMIC.exe Token: SeUndockPrivilege 2488 WMIC.exe Token: SeManageVolumePrivilege 2488 WMIC.exe Token: 33 2488 WMIC.exe Token: 34 2488 WMIC.exe Token: 35 2488 WMIC.exe Token: SeBackupPrivilege 1436 wbengine.exe Token: SeRestorePrivilege 1436 wbengine.exe Token: SeSecurityPrivilege 1436 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2780 wrote to memory of 2760 2780 2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe 30 PID 2780 wrote to memory of 2760 2780 2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe 30 PID 2780 wrote to memory of 2760 2780 2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe 30 PID 2760 wrote to memory of 1608 2760 svchost.exe 31 PID 2760 wrote to memory of 1608 2760 svchost.exe 31 PID 2760 wrote to memory of 1608 2760 svchost.exe 31 PID 1608 wrote to memory of 2560 1608 cmd.exe 33 PID 1608 wrote to memory of 2560 1608 cmd.exe 33 PID 1608 wrote to memory of 2560 1608 cmd.exe 33 PID 1608 wrote to memory of 2488 1608 cmd.exe 36 PID 1608 wrote to memory of 2488 1608 cmd.exe 36 PID 1608 wrote to memory of 2488 1608 cmd.exe 36 PID 2760 wrote to memory of 1656 2760 svchost.exe 38 PID 2760 wrote to memory of 1656 2760 svchost.exe 38 PID 2760 wrote to memory of 1656 2760 svchost.exe 38 PID 1656 wrote to memory of 2052 1656 cmd.exe 40 PID 1656 wrote to memory of 2052 1656 cmd.exe 40 PID 1656 wrote to memory of 2052 1656 cmd.exe 40 PID 1656 wrote to memory of 1004 1656 cmd.exe 41 PID 1656 wrote to memory of 1004 1656 cmd.exe 41 PID 1656 wrote to memory of 1004 1656 cmd.exe 41 PID 2760 wrote to memory of 1396 2760 svchost.exe 42 PID 2760 wrote to memory of 1396 2760 svchost.exe 42 PID 2760 wrote to memory of 1396 2760 svchost.exe 42 PID 1396 wrote to memory of 828 1396 cmd.exe 44 PID 1396 wrote to memory of 828 1396 cmd.exe 44 PID 1396 wrote to memory of 828 1396 cmd.exe 44 PID 2760 wrote to memory of 1708 2760 svchost.exe 48 PID 2760 wrote to memory of 1708 2760 svchost.exe 48 PID 2760 wrote to memory of 1708 2760 svchost.exe 48 -
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\2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-02-19_ee93e7fdbd5b2c719a449bd6f20f4470_wannacry.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2780 -
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:2760 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1608 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2560
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2488
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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:1656 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2052
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1004
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1396 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:828
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\decrypt.txt3⤵
- Opens file in notepad (likely ransom note)
PID:1708
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2432
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1436
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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:1160
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
499B
MD5fe3f7675f090724058c4e9e610f0f7ed
SHA17aa494428ab7c8d7a8506acbef1dc338866a6346
SHA256a5d2e7640d0c847fd536dbed93c55f5d9256de078fa36259e7d8979593006d56
SHA51255608e8c78324e13377842270e495f5753fffe059b29829783834971ccfe790c15e8a45572ed7cb470102716b5233401baad46aaa682599b321071ce696a3a7a
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Filesize
2.4MB
MD5ee93e7fdbd5b2c719a449bd6f20f4470
SHA1d72a94fa8008d7cd412717b38481a52aabf69140
SHA2563ee96efb06a74e9e6dd975669490a6422373e4ee1858b9779809e2a5668440bf
SHA5121de992e6989573d2b2601569878bcd80736d39607905fe08ee933c88409264b9618d225d7df195a84573f33a5dc83adc315e07fc7700a672646883c1c92fb0cc
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0