Resubmissions
31-03-2024 09:16
240331-k8y2eahd2s 1031-03-2024 09:07
240331-k3d42shh42 1020-03-2024 19:30
240320-x7y18shg5v 10Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
31-03-2024 09:07
Behavioral task
behavioral1
Sample
2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe
Resource
win7-20240215-en
windows7-x64
30 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe
Resource
win10v2004-20240226-en
windows10-2004-x64
23 signatures
150 seconds
General
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Target
2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe
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Size
372KB
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MD5
1b2fdf47aaaccaf622e33cb4dd63e8e2
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SHA1
1130c9d40bc5ab004918a509811f914605594961
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SHA256
24266d8af5e54a179ca62fe8ba586a9bced5e39565ad05f33583a3fc8f509613
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SHA512
f494e23997ba85df3fcdaaaeb1d6c056de6f7b6a22ecf8df4797b302016deafea0d2030058680baa521cae93cf5921b3bd58d1750274819f866a868beff2739c
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SSDEEP
3072:doeNsCr9h4ca2aHBSCAb2+IPdG1UlcaVSptR4jiYFD:nNr9h4ca7SCdI12cTtRcf
Score
10/10
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/1524-0-0x0000000000480000-0x00000000004E2000-memory.dmp family_chaos behavioral2/files/0x00030000000227b7-6.dat 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 4260 bcdedit.exe 4836 bcdedit.exe -
Renames multiple (205) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 1020 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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\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\meleaicara.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 5100 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\Pictures\Camera Roll\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-566096764-1992588923-1249862864-1000\desktop.ini svchost.exe 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\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\Recent\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\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Videos\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\Admin\AppData\Roaming\Microsoft\Windows\Libraries\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\Links\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\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\SendTo\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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 -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\nf7ff0myn.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_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4692 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3204 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 5100 svchost.exe -
Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe 5100 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe Token: SeDebugPrivilege 5100 svchost.exe Token: SeBackupPrivilege 5052 vssvc.exe Token: SeRestorePrivilege 5052 vssvc.exe Token: SeAuditPrivilege 5052 vssvc.exe Token: SeIncreaseQuotaPrivilege 5116 WMIC.exe Token: SeSecurityPrivilege 5116 WMIC.exe Token: SeTakeOwnershipPrivilege 5116 WMIC.exe Token: SeLoadDriverPrivilege 5116 WMIC.exe Token: SeSystemProfilePrivilege 5116 WMIC.exe Token: SeSystemtimePrivilege 5116 WMIC.exe Token: SeProfSingleProcessPrivilege 5116 WMIC.exe Token: SeIncBasePriorityPrivilege 5116 WMIC.exe Token: SeCreatePagefilePrivilege 5116 WMIC.exe Token: SeBackupPrivilege 5116 WMIC.exe Token: SeRestorePrivilege 5116 WMIC.exe Token: SeShutdownPrivilege 5116 WMIC.exe Token: SeDebugPrivilege 5116 WMIC.exe Token: SeSystemEnvironmentPrivilege 5116 WMIC.exe Token: SeRemoteShutdownPrivilege 5116 WMIC.exe Token: SeUndockPrivilege 5116 WMIC.exe Token: SeManageVolumePrivilege 5116 WMIC.exe Token: 33 5116 WMIC.exe Token: 34 5116 WMIC.exe Token: 35 5116 WMIC.exe Token: 36 5116 WMIC.exe Token: SeIncreaseQuotaPrivilege 5116 WMIC.exe Token: SeSecurityPrivilege 5116 WMIC.exe Token: SeTakeOwnershipPrivilege 5116 WMIC.exe Token: SeLoadDriverPrivilege 5116 WMIC.exe Token: SeSystemProfilePrivilege 5116 WMIC.exe Token: SeSystemtimePrivilege 5116 WMIC.exe Token: SeProfSingleProcessPrivilege 5116 WMIC.exe Token: SeIncBasePriorityPrivilege 5116 WMIC.exe Token: SeCreatePagefilePrivilege 5116 WMIC.exe Token: SeBackupPrivilege 5116 WMIC.exe Token: SeRestorePrivilege 5116 WMIC.exe Token: SeShutdownPrivilege 5116 WMIC.exe Token: SeDebugPrivilege 5116 WMIC.exe Token: SeSystemEnvironmentPrivilege 5116 WMIC.exe Token: SeRemoteShutdownPrivilege 5116 WMIC.exe Token: SeUndockPrivilege 5116 WMIC.exe Token: SeManageVolumePrivilege 5116 WMIC.exe Token: 33 5116 WMIC.exe Token: 34 5116 WMIC.exe Token: 35 5116 WMIC.exe Token: 36 5116 WMIC.exe Token: SeBackupPrivilege 1488 wbengine.exe Token: SeRestorePrivilege 1488 wbengine.exe Token: SeSecurityPrivilege 1488 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 1524 wrote to memory of 5100 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 89 PID 1524 wrote to memory of 5100 1524 2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe 89 PID 5100 wrote to memory of 4072 5100 svchost.exe 96 PID 5100 wrote to memory of 4072 5100 svchost.exe 96 PID 4072 wrote to memory of 4692 4072 cmd.exe 98 PID 4072 wrote to memory of 4692 4072 cmd.exe 98 PID 4072 wrote to memory of 5116 4072 cmd.exe 101 PID 4072 wrote to memory of 5116 4072 cmd.exe 101 PID 5100 wrote to memory of 4372 5100 svchost.exe 102 PID 5100 wrote to memory of 4372 5100 svchost.exe 102 PID 4372 wrote to memory of 4260 4372 cmd.exe 104 PID 4372 wrote to memory of 4260 4372 cmd.exe 104 PID 4372 wrote to memory of 4836 4372 cmd.exe 105 PID 4372 wrote to memory of 4836 4372 cmd.exe 105 PID 5100 wrote to memory of 4984 5100 svchost.exe 106 PID 5100 wrote to memory of 4984 5100 svchost.exe 106 PID 4984 wrote to memory of 1020 4984 cmd.exe 108 PID 4984 wrote to memory of 1020 4984 cmd.exe 108 PID 5100 wrote to memory of 3204 5100 svchost.exe 112 PID 5100 wrote to memory of 3204 5100 svchost.exe 112 -
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\2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-20_1b2fdf47aaaccaf622e33cb4dd63e8e2_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1524 -
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:5100 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4072 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4692
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:5116
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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:4372 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4260
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4836
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4984 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1020
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\meleaicara.txt3⤵
- Opens file in notepad (likely ransom note)
PID:3204
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5052
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1488
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2072
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4908
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
372KB
MD51b2fdf47aaaccaf622e33cb4dd63e8e2
SHA11130c9d40bc5ab004918a509811f914605594961
SHA25624266d8af5e54a179ca62fe8ba586a9bced5e39565ad05f33583a3fc8f509613
SHA512f494e23997ba85df3fcdaaaeb1d6c056de6f7b6a22ecf8df4797b302016deafea0d2030058680baa521cae93cf5921b3bd58d1750274819f866a868beff2739c
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Filesize
337B
MD52453eac3dfe17fe5b3e88b03f449d805
SHA124c16cbbf4f2b8ea43d1cbea09a51eaa2c0d6b13
SHA2562464de8fc12e32477f09621b90d707ab9fcca3b9d8b1b1caf367f5496021091f
SHA512d5750b142533e1fab2deaae7563edb7da723ef69cc93f91c1e91659da92167d9f9d0b34a7ed828761563068a510857f62d893c0028cc826f3252fc993c420a0a