Analysis
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max time kernel
118s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
01-10-2024 05:43
Behavioral task
behavioral1
Sample
2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe
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Size
27KB
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MD5
e6feeef3c64615286abe610bd69a04ff
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SHA1
69cdb5743c21350eda3c4fce45d5c26ecace57c8
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SHA256
48ac83784322b01e7da5cf98a907f4197679dfbb571b8babfd67307ccdb978bf
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SHA512
0ea8446a77f41d075b6518823272da0e348240ab2eac3eac5204717b40d6b40c62a154337b15a2cee7b758916385239528b4c0f9fd9842dc822a493aa556c43e
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SSDEEP
384:+tWZPzzxAm1vZyby1m92WXbS/FjTqgUloOy5o91CJ8B82ve:j7zxAmisU2WXbSVJho9IJ4822
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/2112-1-0x0000000000370000-0x000000000037E000-memory.dmp family_chaos behavioral1/files/0x000c00000001226d-6.dat family_chaos behavioral1/memory/1916-8-0x00000000001C0000-0x00000000001CE000-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 2644 bcdedit.exe 2228 bcdedit.exe -
Renames multiple (181) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 884 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_me.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1916 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\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\JMFEWY8E\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\Public\Recorded TV\Sample Media\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\All Users\Microsoft\Windows\Start Menu\Programs\Startup\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\386UAANV\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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\Default\AppData\Roaming\Microsoft\Windows\SendTo\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 Mail\Stationery\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\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\Libraries\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\All Users\Microsoft\Windows\Start Menu\Programs\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\Videos\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\Music\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\Start Menu\Programs\Accessories\System Tools\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\SendTo\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\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\Start Menu\Programs\Accessories\Accessibility\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\FXDUII3O\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\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\Public\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\Searches\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\Admin\Favorites\Links for United States\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\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 F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\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\Ringtones\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\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini 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 2860 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2644 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1916 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2112 2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe 2112 2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe 2112 2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe 1916 svchost.exe 1916 svchost.exe 1916 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2112 2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 1916 svchost.exe Token: SeBackupPrivilege 2752 vssvc.exe Token: SeRestorePrivilege 2752 vssvc.exe Token: SeAuditPrivilege 2752 vssvc.exe Token: SeIncreaseQuotaPrivilege 2872 WMIC.exe Token: SeSecurityPrivilege 2872 WMIC.exe Token: SeTakeOwnershipPrivilege 2872 WMIC.exe Token: SeLoadDriverPrivilege 2872 WMIC.exe Token: SeSystemProfilePrivilege 2872 WMIC.exe Token: SeSystemtimePrivilege 2872 WMIC.exe Token: SeProfSingleProcessPrivilege 2872 WMIC.exe Token: SeIncBasePriorityPrivilege 2872 WMIC.exe Token: SeCreatePagefilePrivilege 2872 WMIC.exe Token: SeBackupPrivilege 2872 WMIC.exe Token: SeRestorePrivilege 2872 WMIC.exe Token: SeShutdownPrivilege 2872 WMIC.exe Token: SeDebugPrivilege 2872 WMIC.exe Token: SeSystemEnvironmentPrivilege 2872 WMIC.exe Token: SeRemoteShutdownPrivilege 2872 WMIC.exe Token: SeUndockPrivilege 2872 WMIC.exe Token: SeManageVolumePrivilege 2872 WMIC.exe Token: 33 2872 WMIC.exe Token: 34 2872 WMIC.exe Token: 35 2872 WMIC.exe Token: SeIncreaseQuotaPrivilege 2872 WMIC.exe Token: SeSecurityPrivilege 2872 WMIC.exe Token: SeTakeOwnershipPrivilege 2872 WMIC.exe Token: SeLoadDriverPrivilege 2872 WMIC.exe Token: SeSystemProfilePrivilege 2872 WMIC.exe Token: SeSystemtimePrivilege 2872 WMIC.exe Token: SeProfSingleProcessPrivilege 2872 WMIC.exe Token: SeIncBasePriorityPrivilege 2872 WMIC.exe Token: SeCreatePagefilePrivilege 2872 WMIC.exe Token: SeBackupPrivilege 2872 WMIC.exe Token: SeRestorePrivilege 2872 WMIC.exe Token: SeShutdownPrivilege 2872 WMIC.exe Token: SeDebugPrivilege 2872 WMIC.exe Token: SeSystemEnvironmentPrivilege 2872 WMIC.exe Token: SeRemoteShutdownPrivilege 2872 WMIC.exe Token: SeUndockPrivilege 2872 WMIC.exe Token: SeManageVolumePrivilege 2872 WMIC.exe Token: 33 2872 WMIC.exe Token: 34 2872 WMIC.exe Token: 35 2872 WMIC.exe Token: SeBackupPrivilege 684 wbengine.exe Token: SeRestorePrivilege 684 wbengine.exe Token: SeSecurityPrivilege 684 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2112 wrote to memory of 1916 2112 2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe 30 PID 2112 wrote to memory of 1916 2112 2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe 30 PID 2112 wrote to memory of 1916 2112 2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe 30 PID 1916 wrote to memory of 2796 1916 svchost.exe 31 PID 1916 wrote to memory of 2796 1916 svchost.exe 31 PID 1916 wrote to memory of 2796 1916 svchost.exe 31 PID 2796 wrote to memory of 2860 2796 cmd.exe 33 PID 2796 wrote to memory of 2860 2796 cmd.exe 33 PID 2796 wrote to memory of 2860 2796 cmd.exe 33 PID 2796 wrote to memory of 2872 2796 cmd.exe 36 PID 2796 wrote to memory of 2872 2796 cmd.exe 36 PID 2796 wrote to memory of 2872 2796 cmd.exe 36 PID 1916 wrote to memory of 1984 1916 svchost.exe 38 PID 1916 wrote to memory of 1984 1916 svchost.exe 38 PID 1916 wrote to memory of 1984 1916 svchost.exe 38 PID 1984 wrote to memory of 2644 1984 cmd.exe 40 PID 1984 wrote to memory of 2644 1984 cmd.exe 40 PID 1984 wrote to memory of 2644 1984 cmd.exe 40 PID 1984 wrote to memory of 2228 1984 cmd.exe 41 PID 1984 wrote to memory of 2228 1984 cmd.exe 41 PID 1984 wrote to memory of 2228 1984 cmd.exe 41 PID 1916 wrote to memory of 1452 1916 svchost.exe 42 PID 1916 wrote to memory of 1452 1916 svchost.exe 42 PID 1916 wrote to memory of 1452 1916 svchost.exe 42 PID 1452 wrote to memory of 884 1452 cmd.exe 44 PID 1452 wrote to memory of 884 1452 cmd.exe 44 PID 1452 wrote to memory of 884 1452 cmd.exe 44 PID 1916 wrote to memory of 2644 1916 svchost.exe 48 PID 1916 wrote to memory of 2644 1916 svchost.exe 48 PID 1916 wrote to memory of 2644 1916 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\2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-01_e6feeef3c64615286abe610bd69a04ff_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2112 -
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)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1916 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2860
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2872
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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:1984 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2644
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2228
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1452 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:884
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_me.txt3⤵
- Opens file in notepad (likely ransom note)
PID:2644
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2752
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:684
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:468
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2420
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
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
368B
MD5262c78eca0c99c126b17fa0fba9b910e
SHA1026b544a58f86d447f1b5e11010a294833cd419a
SHA256a52f2c82b72094805912b9a07df1de5c60238eb35a3d225332759cd2983b0895
SHA51255332123355dce7320202f298c0c4b533ab3eb822ac353a0a8b9a016b5154dfea783f8fb179427efeb40f5f4a03d9e922742761a2b5a2e9c39493d128f2f1575
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Filesize
27KB
MD5e6feeef3c64615286abe610bd69a04ff
SHA169cdb5743c21350eda3c4fce45d5c26ecace57c8
SHA25648ac83784322b01e7da5cf98a907f4197679dfbb571b8babfd67307ccdb978bf
SHA5120ea8446a77f41d075b6518823272da0e348240ab2eac3eac5204717b40d6b40c62a154337b15a2cee7b758916385239528b4c0f9fd9842dc822a493aa556c43e
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0