Analysis
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max time kernel
95s -
max time network
133s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
06-10-2024 01:02
Behavioral task
behavioral1
Sample
2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe
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Size
7.2MB
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MD5
8f1eaaf77aa07ceb4af188ab50db4ed3
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SHA1
15148c0a2044805762d8494600386f49aec07b55
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SHA256
4c595e8e612d7663804656ecfb65d3a833e585652ba8f15f486611873420e9a1
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SHA512
d8ffa382cb99d3d7a1659a66fe6d586fea42aec9c21243e3d9b03928faf139809a435cb51dd0ec8ca5902b60a3effe8847637751a4075297ca189b4515e1ffcc
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SSDEEP
49152:MiZLYKiEYSkVodi19NPftSFwkrJxWxhlMOkj7EqTUOgA37MJ+WftYs:
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
chaos
1Fv8VepbEL9tVmBAzu5zvH8JcLDopUVfoS
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/4756-1-0x0000000000340000-0x0000000000A76000-memory.dmp family_chaos behavioral2/files/0x00080000000234ef-7.dat 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 2144 bcdedit.exe 3100 bcdedit.exe -
pid Process 2272 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe 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 4620 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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Drops desktop.ini file(s) 34 IoCs
description ioc Process 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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\AppData\Roaming\Microsoft\Windows\Start Menu\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\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\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\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\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2718105630-359604950-2820636825-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\jwj6canpr.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2828 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2916 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4620 svchost.exe -
Suspicious behavior: EnumeratesProcesses 47 IoCs
pid Process 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe 4620 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe Token: SeDebugPrivilege 4620 svchost.exe Token: SeBackupPrivilege 3484 vssvc.exe Token: SeRestorePrivilege 3484 vssvc.exe Token: SeAuditPrivilege 3484 vssvc.exe Token: SeIncreaseQuotaPrivilege 4252 WMIC.exe Token: SeSecurityPrivilege 4252 WMIC.exe Token: SeTakeOwnershipPrivilege 4252 WMIC.exe Token: SeLoadDriverPrivilege 4252 WMIC.exe Token: SeSystemProfilePrivilege 4252 WMIC.exe Token: SeSystemtimePrivilege 4252 WMIC.exe Token: SeProfSingleProcessPrivilege 4252 WMIC.exe Token: SeIncBasePriorityPrivilege 4252 WMIC.exe Token: SeCreatePagefilePrivilege 4252 WMIC.exe Token: SeBackupPrivilege 4252 WMIC.exe Token: SeRestorePrivilege 4252 WMIC.exe Token: SeShutdownPrivilege 4252 WMIC.exe Token: SeDebugPrivilege 4252 WMIC.exe Token: SeSystemEnvironmentPrivilege 4252 WMIC.exe Token: SeRemoteShutdownPrivilege 4252 WMIC.exe Token: SeUndockPrivilege 4252 WMIC.exe Token: SeManageVolumePrivilege 4252 WMIC.exe Token: 33 4252 WMIC.exe Token: 34 4252 WMIC.exe Token: 35 4252 WMIC.exe Token: 36 4252 WMIC.exe Token: SeIncreaseQuotaPrivilege 4252 WMIC.exe Token: SeSecurityPrivilege 4252 WMIC.exe Token: SeTakeOwnershipPrivilege 4252 WMIC.exe Token: SeLoadDriverPrivilege 4252 WMIC.exe Token: SeSystemProfilePrivilege 4252 WMIC.exe Token: SeSystemtimePrivilege 4252 WMIC.exe Token: SeProfSingleProcessPrivilege 4252 WMIC.exe Token: SeIncBasePriorityPrivilege 4252 WMIC.exe Token: SeCreatePagefilePrivilege 4252 WMIC.exe Token: SeBackupPrivilege 4252 WMIC.exe Token: SeRestorePrivilege 4252 WMIC.exe Token: SeShutdownPrivilege 4252 WMIC.exe Token: SeDebugPrivilege 4252 WMIC.exe Token: SeSystemEnvironmentPrivilege 4252 WMIC.exe Token: SeRemoteShutdownPrivilege 4252 WMIC.exe Token: SeUndockPrivilege 4252 WMIC.exe Token: SeManageVolumePrivilege 4252 WMIC.exe Token: 33 4252 WMIC.exe Token: 34 4252 WMIC.exe Token: 35 4252 WMIC.exe Token: 36 4252 WMIC.exe Token: SeBackupPrivilege 2976 wbengine.exe Token: SeRestorePrivilege 2976 wbengine.exe Token: SeSecurityPrivilege 2976 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4756 wrote to memory of 4620 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 93 PID 4756 wrote to memory of 4620 4756 2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe 93 PID 4620 wrote to memory of 2964 4620 svchost.exe 94 PID 4620 wrote to memory of 2964 4620 svchost.exe 94 PID 2964 wrote to memory of 2828 2964 cmd.exe 96 PID 2964 wrote to memory of 2828 2964 cmd.exe 96 PID 2964 wrote to memory of 4252 2964 cmd.exe 99 PID 2964 wrote to memory of 4252 2964 cmd.exe 99 PID 4620 wrote to memory of 3196 4620 svchost.exe 100 PID 4620 wrote to memory of 3196 4620 svchost.exe 100 PID 3196 wrote to memory of 2144 3196 cmd.exe 102 PID 3196 wrote to memory of 2144 3196 cmd.exe 102 PID 3196 wrote to memory of 3100 3196 cmd.exe 103 PID 3196 wrote to memory of 3100 3196 cmd.exe 103 PID 4620 wrote to memory of 1436 4620 svchost.exe 104 PID 4620 wrote to memory of 1436 4620 svchost.exe 104 PID 1436 wrote to memory of 2272 1436 cmd.exe 106 PID 1436 wrote to memory of 2272 1436 cmd.exe 106 PID 4620 wrote to memory of 2916 4620 svchost.exe 110 PID 4620 wrote to memory of 2916 4620 svchost.exe 110 -
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\2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-06_8f1eaaf77aa07ceb4af188ab50db4ed3_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4756 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4620 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2964 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2828
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4252
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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:3196 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2144
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3100
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1436 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2272
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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:2916
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3484
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2976
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1152
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4140
Network
MITRE ATT&CK Enterprise v15
Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
7.2MB
MD58f1eaaf77aa07ceb4af188ab50db4ed3
SHA115148c0a2044805762d8494600386f49aec07b55
SHA2564c595e8e612d7663804656ecfb65d3a833e585652ba8f15f486611873420e9a1
SHA512d8ffa382cb99d3d7a1659a66fe6d586fea42aec9c21243e3d9b03928faf139809a435cb51dd0ec8ca5902b60a3effe8847637751a4075297ca189b4515e1ffcc
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Filesize
953B
MD56e12ca86b9124f0bd0bde3bc0dcdd939
SHA1b6de4262019d53990ef8159a5c191684456fa3c7
SHA2561e701be7f8ddd4812524a5b89edd0a2e4d6c74ca9407b638d1ad8d7d5ce50b41
SHA5122132552940f1d6b8c347eadcd92f90a5095156c7be705e454410de69743fa4f717ad58d05b689ed3ed48d5f30e4927c6305be4027bf88b42bc513ac286a836c8