Analysis
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max time kernel
125s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
07-08-2024 09:05
Behavioral task
behavioral1
Sample
2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe
Resource
win7-20240708-en
windows7-x64
19 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe
Resource
win10v2004-20240802-en
windows10-2004-x64
22 signatures
150 seconds
General
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Target
2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe
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Size
279KB
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MD5
9b838a440786b24df80da0637dff3ba0
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SHA1
23ccd406239bdd950639cdd2a4382c602fa55aeb
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SHA256
6783ca1fa4ed35e2a48464fbe3c6e9c09c7165e6d3802c8cc395889e4726c389
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SHA512
ed8f0013bdd3cb09478bc07ad29827d556578168a6fffd1d0b23005e9fe29ba1364496bf3236e056fb8f623851165ee3945a8675b735527a2c7600599457639b
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SSDEEP
6144:br9OIyJ7/+WZT1kRnSeXSX9MNzxiMwP2Oswd:fyJ7/+Wd1kRnFX4mNzxyeOswd
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/2824-1-0x0000000000E60000-0x0000000000EAC000-memory.dmp family_chaos behavioral2/files/0x00080000000235f2-7.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 3304 bcdedit.exe 3488 bcdedit.exe -
pid Process 1636 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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\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 4576 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\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\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\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\Searches\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\Admin\Contacts\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\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\AppData\Roaming\Microsoft\Windows\Recent\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 F:\$RECYCLE.BIN\S-1-5-21-2170637797-568393320-3232933035-1000\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\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\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\mud5noww9.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 1048 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1136 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4576 svchost.exe -
Suspicious behavior: EnumeratesProcesses 48 IoCs
pid Process 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe 4576 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe Token: SeDebugPrivilege 4576 svchost.exe Token: SeBackupPrivilege 724 vssvc.exe Token: SeRestorePrivilege 724 vssvc.exe Token: SeAuditPrivilege 724 vssvc.exe Token: SeIncreaseQuotaPrivilege 4552 WMIC.exe Token: SeSecurityPrivilege 4552 WMIC.exe Token: SeTakeOwnershipPrivilege 4552 WMIC.exe Token: SeLoadDriverPrivilege 4552 WMIC.exe Token: SeSystemProfilePrivilege 4552 WMIC.exe Token: SeSystemtimePrivilege 4552 WMIC.exe Token: SeProfSingleProcessPrivilege 4552 WMIC.exe Token: SeIncBasePriorityPrivilege 4552 WMIC.exe Token: SeCreatePagefilePrivilege 4552 WMIC.exe Token: SeBackupPrivilege 4552 WMIC.exe Token: SeRestorePrivilege 4552 WMIC.exe Token: SeShutdownPrivilege 4552 WMIC.exe Token: SeDebugPrivilege 4552 WMIC.exe Token: SeSystemEnvironmentPrivilege 4552 WMIC.exe Token: SeRemoteShutdownPrivilege 4552 WMIC.exe Token: SeUndockPrivilege 4552 WMIC.exe Token: SeManageVolumePrivilege 4552 WMIC.exe Token: 33 4552 WMIC.exe Token: 34 4552 WMIC.exe Token: 35 4552 WMIC.exe Token: 36 4552 WMIC.exe Token: SeIncreaseQuotaPrivilege 4552 WMIC.exe Token: SeSecurityPrivilege 4552 WMIC.exe Token: SeTakeOwnershipPrivilege 4552 WMIC.exe Token: SeLoadDriverPrivilege 4552 WMIC.exe Token: SeSystemProfilePrivilege 4552 WMIC.exe Token: SeSystemtimePrivilege 4552 WMIC.exe Token: SeProfSingleProcessPrivilege 4552 WMIC.exe Token: SeIncBasePriorityPrivilege 4552 WMIC.exe Token: SeCreatePagefilePrivilege 4552 WMIC.exe Token: SeBackupPrivilege 4552 WMIC.exe Token: SeRestorePrivilege 4552 WMIC.exe Token: SeShutdownPrivilege 4552 WMIC.exe Token: SeDebugPrivilege 4552 WMIC.exe Token: SeSystemEnvironmentPrivilege 4552 WMIC.exe Token: SeRemoteShutdownPrivilege 4552 WMIC.exe Token: SeUndockPrivilege 4552 WMIC.exe Token: SeManageVolumePrivilege 4552 WMIC.exe Token: 33 4552 WMIC.exe Token: 34 4552 WMIC.exe Token: 35 4552 WMIC.exe Token: 36 4552 WMIC.exe Token: SeBackupPrivilege 2352 wbengine.exe Token: SeRestorePrivilege 2352 wbengine.exe Token: SeSecurityPrivilege 2352 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2824 wrote to memory of 4576 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 96 PID 2824 wrote to memory of 4576 2824 2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe 96 PID 4576 wrote to memory of 4172 4576 svchost.exe 98 PID 4576 wrote to memory of 4172 4576 svchost.exe 98 PID 4172 wrote to memory of 1048 4172 cmd.exe 100 PID 4172 wrote to memory of 1048 4172 cmd.exe 100 PID 4172 wrote to memory of 4552 4172 cmd.exe 103 PID 4172 wrote to memory of 4552 4172 cmd.exe 103 PID 4576 wrote to memory of 4280 4576 svchost.exe 104 PID 4576 wrote to memory of 4280 4576 svchost.exe 104 PID 4280 wrote to memory of 3304 4280 cmd.exe 106 PID 4280 wrote to memory of 3304 4280 cmd.exe 106 PID 4280 wrote to memory of 3488 4280 cmd.exe 107 PID 4280 wrote to memory of 3488 4280 cmd.exe 107 PID 4576 wrote to memory of 4004 4576 svchost.exe 108 PID 4576 wrote to memory of 4004 4576 svchost.exe 108 PID 4004 wrote to memory of 1636 4004 cmd.exe 110 PID 4004 wrote to memory of 1636 4004 cmd.exe 110 PID 4576 wrote to memory of 1136 4576 svchost.exe 114 PID 4576 wrote to memory of 1136 4576 svchost.exe 114 -
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\2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-07_9b838a440786b24df80da0637dff3ba0_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2824 -
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:4576 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4172 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1048
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4552
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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:4280 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3304
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3488
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4004 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1636
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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:1136
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4212,i,13995403245988825027,7033610968827661507,262144 --variations-seed-version --mojo-platform-channel-handle=1316 /prefetch:81⤵PID:3352
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:724
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2352
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2484
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:1080
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
279KB
MD59b838a440786b24df80da0637dff3ba0
SHA123ccd406239bdd950639cdd2a4382c602fa55aeb
SHA2566783ca1fa4ed35e2a48464fbe3c6e9c09c7165e6d3802c8cc395889e4726c389
SHA512ed8f0013bdd3cb09478bc07ad29827d556578168a6fffd1d0b23005e9fe29ba1364496bf3236e056fb8f623851165ee3945a8675b735527a2c7600599457639b
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Filesize
584B
MD5a763f99b18db69fad94137a282f8e61d
SHA13c950c3cfdd4cf689f7c909a0d0261441d866a28
SHA256de46707c10536a6530e938f6cf9fbfa534449b0662185974f7fca0939b6ae912
SHA512c2f7f5da1816483d248b5f820e6abab407111663b39807a591d4b5b0e920b02d577cbf810428f7f47c21c1a8233788ec5a8e76ac913a087a8d7d2787e1bed6d7