Analysis
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max time kernel
118s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
07/09/2023, 19:06
Behavioral task
behavioral1
Sample
2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe
Resource
win10v2004-20230831-en
General
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Target
2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe
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Size
288KB
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MD5
af77c5f294ae60256fc906d0fdb5c064
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SHA1
d3bab80b071bfd931e90c7a0f995ed940d124582
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SHA256
af5d4103305fda1d2a415dd22177eb670298b0c834733804de2fff7de015f618
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SHA512
0b93ad321025fbc12a34219159f29d6e749493dae9e38398d6f149f0668be3c7aedf2531ad6a96a75208e32f880991a5c5892a8f6be14f690592b136e1978f15
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SSDEEP
6144:73vkltq9RZw2tJ0B+x5IMnK8V3diKtKtdU6icE:r4oZw6JC+x5IMnK2diGKf5i
Malware Config
Extracted
C:\ProgramData\Adobe\Updater6\How_to_recovery_files.bat
https://t.me/cp00pc1
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 5 IoCs
resource yara_rule behavioral1/memory/2052-0-0x00000000002C0000-0x0000000000308000-memory.dmp family_chaos behavioral1/files/0x00040000000130e5-6.dat family_chaos behavioral1/memory/2648-8-0x0000000000C00000-0x0000000000C48000-memory.dmp family_chaos behavioral1/files/0x00040000000130e5-7.dat family_chaos behavioral1/memory/2648-10-0x000000001ADD0000-0x000000001AE50000-memory.dmp family_chaos -
Deletes shadow copies 2 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 2880 bcdedit.exe 2980 bcdedit.exe -
pid Process 532 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 SecurityHealth.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\How_to_recovery_files.bat SecurityHealth.exe -
Executes dropped EXE 1 IoCs
pid Process 2648 SecurityHealth.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-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\SecurityHealth.exe" SecurityHealth.exe -
Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Pictures\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\JREOH5UP\desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Music\desktop.ini SecurityHealth.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-607259312-1573743425-2763420908-1000\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Music\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Videos\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Links\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\XOUCI7X0\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\OCC48JZO\desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Searches\desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\desktop.ini SecurityHealth.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Desktop\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Downloads\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Documents\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Libraries\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\9ZA6L5EC\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\S14V3QJ7\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\T1GYCSOV\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Documents\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini SecurityHealth.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\Videos\desktop.ini SecurityHealth.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\FZ6PR11S\desktop.ini SecurityHealth.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\htxky37yf.jpg" SecurityHealth.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2776 vssadmin.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2052 2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe 2648 SecurityHealth.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 2052 2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe 2052 2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe 2052 2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe 2648 SecurityHealth.exe 2648 SecurityHealth.exe 2648 SecurityHealth.exe 2648 SecurityHealth.exe 2648 SecurityHealth.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2052 2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe Token: SeDebugPrivilege 2648 SecurityHealth.exe Token: SeBackupPrivilege 2856 vssvc.exe Token: SeRestorePrivilege 2856 vssvc.exe Token: SeAuditPrivilege 2856 vssvc.exe Token: SeIncreaseQuotaPrivilege 1276 WMIC.exe Token: SeSecurityPrivilege 1276 WMIC.exe Token: SeTakeOwnershipPrivilege 1276 WMIC.exe Token: SeLoadDriverPrivilege 1276 WMIC.exe Token: SeSystemProfilePrivilege 1276 WMIC.exe Token: SeSystemtimePrivilege 1276 WMIC.exe Token: SeProfSingleProcessPrivilege 1276 WMIC.exe Token: SeIncBasePriorityPrivilege 1276 WMIC.exe Token: SeCreatePagefilePrivilege 1276 WMIC.exe Token: SeBackupPrivilege 1276 WMIC.exe Token: SeRestorePrivilege 1276 WMIC.exe Token: SeShutdownPrivilege 1276 WMIC.exe Token: SeDebugPrivilege 1276 WMIC.exe Token: SeSystemEnvironmentPrivilege 1276 WMIC.exe Token: SeRemoteShutdownPrivilege 1276 WMIC.exe Token: SeUndockPrivilege 1276 WMIC.exe Token: SeManageVolumePrivilege 1276 WMIC.exe Token: 33 1276 WMIC.exe Token: 34 1276 WMIC.exe Token: 35 1276 WMIC.exe Token: SeIncreaseQuotaPrivilege 1276 WMIC.exe Token: SeSecurityPrivilege 1276 WMIC.exe Token: SeTakeOwnershipPrivilege 1276 WMIC.exe Token: SeLoadDriverPrivilege 1276 WMIC.exe Token: SeSystemProfilePrivilege 1276 WMIC.exe Token: SeSystemtimePrivilege 1276 WMIC.exe Token: SeProfSingleProcessPrivilege 1276 WMIC.exe Token: SeIncBasePriorityPrivilege 1276 WMIC.exe Token: SeCreatePagefilePrivilege 1276 WMIC.exe Token: SeBackupPrivilege 1276 WMIC.exe Token: SeRestorePrivilege 1276 WMIC.exe Token: SeShutdownPrivilege 1276 WMIC.exe Token: SeDebugPrivilege 1276 WMIC.exe Token: SeSystemEnvironmentPrivilege 1276 WMIC.exe Token: SeRemoteShutdownPrivilege 1276 WMIC.exe Token: SeUndockPrivilege 1276 WMIC.exe Token: SeManageVolumePrivilege 1276 WMIC.exe Token: 33 1276 WMIC.exe Token: 34 1276 WMIC.exe Token: 35 1276 WMIC.exe Token: SeBackupPrivilege 1712 wbengine.exe Token: SeRestorePrivilege 1712 wbengine.exe Token: SeSecurityPrivilege 1712 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2052 wrote to memory of 2648 2052 2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe 29 PID 2052 wrote to memory of 2648 2052 2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe 29 PID 2052 wrote to memory of 2648 2052 2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe 29 PID 2648 wrote to memory of 2516 2648 SecurityHealth.exe 30 PID 2648 wrote to memory of 2516 2648 SecurityHealth.exe 30 PID 2648 wrote to memory of 2516 2648 SecurityHealth.exe 30 PID 2516 wrote to memory of 2776 2516 cmd.exe 32 PID 2516 wrote to memory of 2776 2516 cmd.exe 32 PID 2516 wrote to memory of 2776 2516 cmd.exe 32 PID 2516 wrote to memory of 1276 2516 cmd.exe 35 PID 2516 wrote to memory of 1276 2516 cmd.exe 35 PID 2516 wrote to memory of 1276 2516 cmd.exe 35 PID 2648 wrote to memory of 2836 2648 SecurityHealth.exe 36 PID 2648 wrote to memory of 2836 2648 SecurityHealth.exe 36 PID 2648 wrote to memory of 2836 2648 SecurityHealth.exe 36 PID 2836 wrote to memory of 2880 2836 cmd.exe 38 PID 2836 wrote to memory of 2880 2836 cmd.exe 38 PID 2836 wrote to memory of 2880 2836 cmd.exe 38 PID 2836 wrote to memory of 2980 2836 cmd.exe 39 PID 2836 wrote to memory of 2980 2836 cmd.exe 39 PID 2836 wrote to memory of 2980 2836 cmd.exe 39 PID 2648 wrote to memory of 2984 2648 SecurityHealth.exe 40 PID 2648 wrote to memory of 2984 2648 SecurityHealth.exe 40 PID 2648 wrote to memory of 2984 2648 SecurityHealth.exe 40 PID 2984 wrote to memory of 532 2984 cmd.exe 42 PID 2984 wrote to memory of 532 2984 cmd.exe 42 PID 2984 wrote to memory of 532 2984 cmd.exe 42 PID 2648 wrote to memory of 484 2648 SecurityHealth.exe 49 PID 2648 wrote to memory of 484 2648 SecurityHealth.exe 49 PID 2648 wrote to memory of 484 2648 SecurityHealth.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\2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe"C:\Users\Admin\AppData\Local\Temp\2023-08-23_af77c5f294ae60256fc906d0fdb5c064_wannacry_JC.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2052 -
C:\Users\Admin\AppData\Roaming\SecurityHealth.exe"C:\Users\Admin\AppData\Roaming\SecurityHealth.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:2648 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2516 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2776
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1276
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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:2836 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2880
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2980
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2984 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:532
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Roaming\How_to_recovery_files.bat" "3⤵PID:484
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2856
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1712
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1012
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1936
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD55aa3fff4021de1b133b5c5bc204cc04a
SHA1a5ee213995d574873353859d8a74c538fa5d27d1
SHA25605df982638c10b0e90be5f180e665329fd0e94ff4c21afd80c5d894bd7e5846a
SHA51237a5b408e3b1f1d5416580435b94585b836c8e8523031f3369ba250225c7a7064670ea6a8ef182926f1745cf309ca6ce58c6f1c4eaf0b2923df4a2a2f5641e45
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Filesize
1KB
MD55aa3fff4021de1b133b5c5bc204cc04a
SHA1a5ee213995d574873353859d8a74c538fa5d27d1
SHA25605df982638c10b0e90be5f180e665329fd0e94ff4c21afd80c5d894bd7e5846a
SHA51237a5b408e3b1f1d5416580435b94585b836c8e8523031f3369ba250225c7a7064670ea6a8ef182926f1745cf309ca6ce58c6f1c4eaf0b2923df4a2a2f5641e45
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Filesize
288KB
MD5af77c5f294ae60256fc906d0fdb5c064
SHA1d3bab80b071bfd931e90c7a0f995ed940d124582
SHA256af5d4103305fda1d2a415dd22177eb670298b0c834733804de2fff7de015f618
SHA5120b93ad321025fbc12a34219159f29d6e749493dae9e38398d6f149f0668be3c7aedf2531ad6a96a75208e32f880991a5c5892a8f6be14f690592b136e1978f15
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Filesize
288KB
MD5af77c5f294ae60256fc906d0fdb5c064
SHA1d3bab80b071bfd931e90c7a0f995ed940d124582
SHA256af5d4103305fda1d2a415dd22177eb670298b0c834733804de2fff7de015f618
SHA5120b93ad321025fbc12a34219159f29d6e749493dae9e38398d6f149f0668be3c7aedf2531ad6a96a75208e32f880991a5c5892a8f6be14f690592b136e1978f15
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0