Analysis
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max time kernel
93s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240730-en -
resource tags
arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system -
submitted
30-07-2024 17:54
Behavioral task
behavioral1
Sample
2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe
Resource
win7-20240708-en
windows7-x64
20 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe
Resource
win10v2004-20240730-en
windows10-2004-x64
23 signatures
150 seconds
General
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Target
2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe
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Size
188KB
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MD5
99177a95442cb3cd77f9359c948c9fbe
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SHA1
764af2058a89c8ffa7e704bdb84d4492bcae5be2
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SHA256
612eb5c3269a264d1516904e24fe1bdfa17cb8a06441f03c483216eb52a9f526
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SHA512
94b9a2eb93d3b0c53de4ab90c800ad4212d41faf34e3bc7e8d628140db0e62546596215fd2d5f3d6b6cfff614b9bf33c61b3b7c87278adada504862bcc8c4b9f
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SSDEEP
3072:2osvQr9UpB/WcwALWP+nWVWRzO/LZLYq5r+6BQJAjrEzUV7kMq3LB4s:jr9Uv+KWP+nqei/Gq5aIjiUxFqt4
Malware Config
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/4932-1-0x0000000000CF0000-0x0000000000D26000-memory.dmp family_chaos behavioral2/files/0x000900000002345b-6.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 3336 bcdedit.exe 3968 bcdedit.exe -
Renames multiple (215) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 3788 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-1-5-21-3881032017-2947584075-2120384563-1000\Control Panel\International\Geo\Nation 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-3881032017-2947584075-2120384563-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 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 File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1328 svchost.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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Drops desktop.ini file(s) 34 IoCs
description ioc Process 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\Documents\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\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3881032017-2947584075-2120384563-1000\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Music\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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\Favorites\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\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\AppData\Roaming\Microsoft\Windows\AccountPictures\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 C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3881032017-2947584075-2120384563-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\334zj7y9j.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 1536 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3881032017-2947584075-2120384563-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 4524 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1328 svchost.exe -
Suspicious behavior: EnumeratesProcesses 41 IoCs
pid Process 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe 1328 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe Token: SeDebugPrivilege 1328 svchost.exe Token: SeBackupPrivilege 220 vssvc.exe Token: SeRestorePrivilege 220 vssvc.exe Token: SeAuditPrivilege 220 vssvc.exe Token: SeIncreaseQuotaPrivilege 4304 WMIC.exe Token: SeSecurityPrivilege 4304 WMIC.exe Token: SeTakeOwnershipPrivilege 4304 WMIC.exe Token: SeLoadDriverPrivilege 4304 WMIC.exe Token: SeSystemProfilePrivilege 4304 WMIC.exe Token: SeSystemtimePrivilege 4304 WMIC.exe Token: SeProfSingleProcessPrivilege 4304 WMIC.exe Token: SeIncBasePriorityPrivilege 4304 WMIC.exe Token: SeCreatePagefilePrivilege 4304 WMIC.exe Token: SeBackupPrivilege 4304 WMIC.exe Token: SeRestorePrivilege 4304 WMIC.exe Token: SeShutdownPrivilege 4304 WMIC.exe Token: SeDebugPrivilege 4304 WMIC.exe Token: SeSystemEnvironmentPrivilege 4304 WMIC.exe Token: SeRemoteShutdownPrivilege 4304 WMIC.exe Token: SeUndockPrivilege 4304 WMIC.exe Token: SeManageVolumePrivilege 4304 WMIC.exe Token: 33 4304 WMIC.exe Token: 34 4304 WMIC.exe Token: 35 4304 WMIC.exe Token: 36 4304 WMIC.exe Token: SeIncreaseQuotaPrivilege 4304 WMIC.exe Token: SeSecurityPrivilege 4304 WMIC.exe Token: SeTakeOwnershipPrivilege 4304 WMIC.exe Token: SeLoadDriverPrivilege 4304 WMIC.exe Token: SeSystemProfilePrivilege 4304 WMIC.exe Token: SeSystemtimePrivilege 4304 WMIC.exe Token: SeProfSingleProcessPrivilege 4304 WMIC.exe Token: SeIncBasePriorityPrivilege 4304 WMIC.exe Token: SeCreatePagefilePrivilege 4304 WMIC.exe Token: SeBackupPrivilege 4304 WMIC.exe Token: SeRestorePrivilege 4304 WMIC.exe Token: SeShutdownPrivilege 4304 WMIC.exe Token: SeDebugPrivilege 4304 WMIC.exe Token: SeSystemEnvironmentPrivilege 4304 WMIC.exe Token: SeRemoteShutdownPrivilege 4304 WMIC.exe Token: SeUndockPrivilege 4304 WMIC.exe Token: SeManageVolumePrivilege 4304 WMIC.exe Token: 33 4304 WMIC.exe Token: 34 4304 WMIC.exe Token: 35 4304 WMIC.exe Token: 36 4304 WMIC.exe Token: SeBackupPrivilege 3624 wbengine.exe Token: SeRestorePrivilege 3624 wbengine.exe Token: SeSecurityPrivilege 3624 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4932 wrote to memory of 1328 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 79 PID 4932 wrote to memory of 1328 4932 2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe 79 PID 1328 wrote to memory of 64 1328 svchost.exe 81 PID 1328 wrote to memory of 64 1328 svchost.exe 81 PID 64 wrote to memory of 1536 64 cmd.exe 83 PID 64 wrote to memory of 1536 64 cmd.exe 83 PID 64 wrote to memory of 4304 64 cmd.exe 86 PID 64 wrote to memory of 4304 64 cmd.exe 86 PID 1328 wrote to memory of 4956 1328 svchost.exe 88 PID 1328 wrote to memory of 4956 1328 svchost.exe 88 PID 4956 wrote to memory of 3968 4956 cmd.exe 90 PID 4956 wrote to memory of 3968 4956 cmd.exe 90 PID 4956 wrote to memory of 3336 4956 cmd.exe 91 PID 4956 wrote to memory of 3336 4956 cmd.exe 91 PID 1328 wrote to memory of 4920 1328 svchost.exe 92 PID 1328 wrote to memory of 4920 1328 svchost.exe 92 PID 4920 wrote to memory of 3788 4920 cmd.exe 94 PID 4920 wrote to memory of 3788 4920 cmd.exe 94 PID 1328 wrote to memory of 4524 1328 svchost.exe 98 PID 1328 wrote to memory of 4524 1328 svchost.exe 98 -
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\2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-30_99177a95442cb3cd77f9359c948c9fbe_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4932 -
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:1328 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:64 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1536
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4304
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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:4956 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3968
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3336
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4920 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3788
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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:4524
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:220
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3624
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1208
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4952
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
188KB
MD599177a95442cb3cd77f9359c948c9fbe
SHA1764af2058a89c8ffa7e704bdb84d4492bcae5be2
SHA256612eb5c3269a264d1516904e24fe1bdfa17cb8a06441f03c483216eb52a9f526
SHA51294b9a2eb93d3b0c53de4ab90c800ad4212d41faf34e3bc7e8d628140db0e62546596215fd2d5f3d6b6cfff614b9bf33c61b3b7c87278adada504862bcc8c4b9f
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Filesize
26B
MD5fd81f4f12c2e9ecc21818de1c27a84f0
SHA1989b67fe179dc55003c848fd2f7a2ce56f3dd13c
SHA256ad8408438868d3a62f80e9be24839df806d7196358c71cc9a7340486a528639c
SHA512e47f8f1f0ea524c332beac13c6db4f8b2369881e688f3d776ed16dcbaf06ad11927900494e872a917610cee2f9f8bc26267dd07ab3fa5536e18d948712d59732