Analysis
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max time kernel
16s -
max time network
17s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
09-01-2025 09:24
Behavioral task
behavioral1
Sample
2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe
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Size
6.3MB
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MD5
95be77dac172c472cba318f9876ec444
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SHA1
e24fc0a73ff5675a33de6bf033b65fa4b139d85a
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SHA256
2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4
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SHA512
4eeefdd69073f33d7369e52a306e812178365322ce26573331c9bfe9b60935e87b1a10b754df7159d87f1767ac945183b178923a53e21b7a5808e31e2af5a0a0
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SSDEEP
49152:31WDsGsL5TCvRc46CCGZuoKzzkvhctESbe7t0G8IfPIu3GTJ:
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/3016-1-0x0000000000C20000-0x0000000001272000-memory.dmp family_chaos behavioral1/files/0x000c000000012243-6.dat family_chaos behavioral1/memory/2680-10-0x0000000000FD0000-0x0000000001622000-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 2064 bcdedit.exe 1636 bcdedit.exe -
Renames multiple (192) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 1668 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 2680 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-1-5-21-2703099537-420551529-3771253338-1000\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 F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Startup\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\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\FXDUII3O\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\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\CBCNU6WZ\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\AppData\Local\Microsoft\Windows Mail\Stationery\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\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\Feeds Cache\25UY7HZX\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\Ringtones\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\Desktop\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\Public\Downloads\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\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\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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\Maintenance\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\Public\Desktop\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\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\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\JMFEWY8E\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\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\386UAANV\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\Contacts\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\Internet Explorer\Quick Launch\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\Public\Libraries\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\Links\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\RTJA0BV0\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\3K0NZPWJ\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\B329PW0O\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\Favorites\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\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ln6jyqpxa.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 2468 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1652 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 3016 2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe 2680 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3016 2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe 3016 2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe 3016 2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe 2680 svchost.exe 2680 svchost.exe 2680 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 3016 2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe Token: SeDebugPrivilege 2680 svchost.exe Token: SeBackupPrivilege 2620 vssvc.exe Token: SeRestorePrivilege 2620 vssvc.exe Token: SeAuditPrivilege 2620 vssvc.exe Token: SeIncreaseQuotaPrivilege 1892 WMIC.exe Token: SeSecurityPrivilege 1892 WMIC.exe Token: SeTakeOwnershipPrivilege 1892 WMIC.exe Token: SeLoadDriverPrivilege 1892 WMIC.exe Token: SeSystemProfilePrivilege 1892 WMIC.exe Token: SeSystemtimePrivilege 1892 WMIC.exe Token: SeProfSingleProcessPrivilege 1892 WMIC.exe Token: SeIncBasePriorityPrivilege 1892 WMIC.exe Token: SeCreatePagefilePrivilege 1892 WMIC.exe Token: SeBackupPrivilege 1892 WMIC.exe Token: SeRestorePrivilege 1892 WMIC.exe Token: SeShutdownPrivilege 1892 WMIC.exe Token: SeDebugPrivilege 1892 WMIC.exe Token: SeSystemEnvironmentPrivilege 1892 WMIC.exe Token: SeRemoteShutdownPrivilege 1892 WMIC.exe Token: SeUndockPrivilege 1892 WMIC.exe Token: SeManageVolumePrivilege 1892 WMIC.exe Token: 33 1892 WMIC.exe Token: 34 1892 WMIC.exe Token: 35 1892 WMIC.exe Token: SeIncreaseQuotaPrivilege 1892 WMIC.exe Token: SeSecurityPrivilege 1892 WMIC.exe Token: SeTakeOwnershipPrivilege 1892 WMIC.exe Token: SeLoadDriverPrivilege 1892 WMIC.exe Token: SeSystemProfilePrivilege 1892 WMIC.exe Token: SeSystemtimePrivilege 1892 WMIC.exe Token: SeProfSingleProcessPrivilege 1892 WMIC.exe Token: SeIncBasePriorityPrivilege 1892 WMIC.exe Token: SeCreatePagefilePrivilege 1892 WMIC.exe Token: SeBackupPrivilege 1892 WMIC.exe Token: SeRestorePrivilege 1892 WMIC.exe Token: SeShutdownPrivilege 1892 WMIC.exe Token: SeDebugPrivilege 1892 WMIC.exe Token: SeSystemEnvironmentPrivilege 1892 WMIC.exe Token: SeRemoteShutdownPrivilege 1892 WMIC.exe Token: SeUndockPrivilege 1892 WMIC.exe Token: SeManageVolumePrivilege 1892 WMIC.exe Token: 33 1892 WMIC.exe Token: 34 1892 WMIC.exe Token: 35 1892 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 3016 wrote to memory of 2680 3016 2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe 29 PID 3016 wrote to memory of 2680 3016 2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe 29 PID 3016 wrote to memory of 2680 3016 2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe 29 PID 2680 wrote to memory of 2724 2680 svchost.exe 30 PID 2680 wrote to memory of 2724 2680 svchost.exe 30 PID 2680 wrote to memory of 2724 2680 svchost.exe 30 PID 2724 wrote to memory of 2468 2724 cmd.exe 32 PID 2724 wrote to memory of 2468 2724 cmd.exe 32 PID 2724 wrote to memory of 2468 2724 cmd.exe 32 PID 2724 wrote to memory of 1892 2724 cmd.exe 35 PID 2724 wrote to memory of 1892 2724 cmd.exe 35 PID 2724 wrote to memory of 1892 2724 cmd.exe 35 PID 2680 wrote to memory of 2408 2680 svchost.exe 37 PID 2680 wrote to memory of 2408 2680 svchost.exe 37 PID 2680 wrote to memory of 2408 2680 svchost.exe 37 PID 2408 wrote to memory of 2064 2408 cmd.exe 39 PID 2408 wrote to memory of 2064 2408 cmd.exe 39 PID 2408 wrote to memory of 2064 2408 cmd.exe 39 PID 2408 wrote to memory of 1636 2408 cmd.exe 40 PID 2408 wrote to memory of 1636 2408 cmd.exe 40 PID 2408 wrote to memory of 1636 2408 cmd.exe 40 PID 2680 wrote to memory of 624 2680 svchost.exe 41 PID 2680 wrote to memory of 624 2680 svchost.exe 41 PID 2680 wrote to memory of 624 2680 svchost.exe 41 PID 624 wrote to memory of 1668 624 cmd.exe 43 PID 624 wrote to memory of 1668 624 cmd.exe 43 PID 624 wrote to memory of 1668 624 cmd.exe 43 PID 2680 wrote to memory of 1652 2680 svchost.exe 48 PID 2680 wrote to memory of 1652 2680 svchost.exe 48 PID 2680 wrote to memory of 1652 2680 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\2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-09_95be77dac172c472cba318f9876ec444_wannacry.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3016 -
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:2680 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2724 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2468
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1892
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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:2408 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2064
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1636
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:624 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1668
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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:1652
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2620
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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:1452
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2836
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
1KB
MD53e2b5192e7ca51e0bd3fe0910b680ee6
SHA1a0a124d65a22f6f614dedc8cc9c35da9ac54c598
SHA256897da642f47d00bc703e62b3e9d451ab24af1ec742dfe739c924a02a56988c61
SHA512ee7326f3dabff32ebaaa7285b23ea2ec3a7753e7e8a255a81fe8f957083f016482b6beeb4468da00e1ab1ceed209a4b37bbc07ea7ba3f5046a2f5d7434d3db24
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Filesize
6.3MB
MD595be77dac172c472cba318f9876ec444
SHA1e24fc0a73ff5675a33de6bf033b65fa4b139d85a
SHA2562dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4
SHA5124eeefdd69073f33d7369e52a306e812178365322ce26573331c9bfe9b60935e87b1a10b754df7159d87f1767ac945183b178923a53e21b7a5808e31e2af5a0a0
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0