Analysis
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max time kernel
148s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
17-04-2024 13:38
Behavioral task
behavioral1
Sample
2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe
Resource
win7-20240221-en
windows7-x64
19 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe
Resource
win10v2004-20240412-en
windows10-2004-x64
22 signatures
150 seconds
General
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Target
2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe
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Size
165KB
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MD5
9f99b9ecdb90b991aa0eb5884523185f
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SHA1
5d99a9343765bb758f8ee85585dd376ec190c6e4
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SHA256
3bac13b433b453c3db0f70f4e3ce07a2c1108a0892bac358a1d1b38a30e1cd08
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SHA512
5c7a8f872bd0c5800e60e164eb605650eac06a6fc07322ab78274cd9c024e08c7cb8797580ecfb9067efd0ab6a1117e5c23fd78b4e6256ccecea4997f0859ed5
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SSDEEP
3072:36oLuur9P2Wr6QhzaNpatUPp0hmHzs/0ui8N/Wm9BsB85:dr9P2Wrb2R0Ya/28
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/3448-0-0x00000000001F0000-0x000000000021E000-memory.dmp family_chaos behavioral2/files/0x0008000000023401-6.dat family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 2 IoCs
resource yara_rule behavioral2/memory/3448-0-0x00000000001F0000-0x000000000021E000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x0008000000023401-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 3340 bcdedit.exe 3964 bcdedit.exe -
pid Process 4976 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-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation notepad.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\notepad.url notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini notepad.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\READ THIS.txt notepad.exe -
Executes dropped EXE 1 IoCs
pid Process 4304 notepad.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\Links\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Documents\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Videos\desktop.ini notepad.exe File opened for modification C:\Users\Public\Desktop\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Music\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Searches\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini notepad.exe File opened for modification C:\Users\Public\Music\desktop.ini notepad.exe File opened for modification C:\Users\Public\Videos\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini notepad.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini notepad.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini notepad.exe File opened for modification C:\Users\Public\Documents\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini notepad.exe File opened for modification C:\Users\Public\Pictures\desktop.ini notepad.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1826666146-2574340311-1877551059-1000\desktop.ini notepad.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini notepad.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini notepad.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\9prigye45.jpg" notepad.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_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 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2768 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000_Classes\Local Settings notepad.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4304 notepad.exe -
Suspicious behavior: EnumeratesProcesses 43 IoCs
pid Process 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe 4304 notepad.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe Token: SeDebugPrivilege 4304 notepad.exe Token: SeBackupPrivilege 4796 vssvc.exe Token: SeRestorePrivilege 4796 vssvc.exe Token: SeAuditPrivilege 4796 vssvc.exe Token: SeIncreaseQuotaPrivilege 3336 WMIC.exe Token: SeSecurityPrivilege 3336 WMIC.exe Token: SeTakeOwnershipPrivilege 3336 WMIC.exe Token: SeLoadDriverPrivilege 3336 WMIC.exe Token: SeSystemProfilePrivilege 3336 WMIC.exe Token: SeSystemtimePrivilege 3336 WMIC.exe Token: SeProfSingleProcessPrivilege 3336 WMIC.exe Token: SeIncBasePriorityPrivilege 3336 WMIC.exe Token: SeCreatePagefilePrivilege 3336 WMIC.exe Token: SeBackupPrivilege 3336 WMIC.exe Token: SeRestorePrivilege 3336 WMIC.exe Token: SeShutdownPrivilege 3336 WMIC.exe Token: SeDebugPrivilege 3336 WMIC.exe Token: SeSystemEnvironmentPrivilege 3336 WMIC.exe Token: SeRemoteShutdownPrivilege 3336 WMIC.exe Token: SeUndockPrivilege 3336 WMIC.exe Token: SeManageVolumePrivilege 3336 WMIC.exe Token: 33 3336 WMIC.exe Token: 34 3336 WMIC.exe Token: 35 3336 WMIC.exe Token: 36 3336 WMIC.exe Token: SeIncreaseQuotaPrivilege 3336 WMIC.exe Token: SeSecurityPrivilege 3336 WMIC.exe Token: SeTakeOwnershipPrivilege 3336 WMIC.exe Token: SeLoadDriverPrivilege 3336 WMIC.exe Token: SeSystemProfilePrivilege 3336 WMIC.exe Token: SeSystemtimePrivilege 3336 WMIC.exe Token: SeProfSingleProcessPrivilege 3336 WMIC.exe Token: SeIncBasePriorityPrivilege 3336 WMIC.exe Token: SeCreatePagefilePrivilege 3336 WMIC.exe Token: SeBackupPrivilege 3336 WMIC.exe Token: SeRestorePrivilege 3336 WMIC.exe Token: SeShutdownPrivilege 3336 WMIC.exe Token: SeDebugPrivilege 3336 WMIC.exe Token: SeSystemEnvironmentPrivilege 3336 WMIC.exe Token: SeRemoteShutdownPrivilege 3336 WMIC.exe Token: SeUndockPrivilege 3336 WMIC.exe Token: SeManageVolumePrivilege 3336 WMIC.exe Token: 33 3336 WMIC.exe Token: 34 3336 WMIC.exe Token: 35 3336 WMIC.exe Token: 36 3336 WMIC.exe Token: SeBackupPrivilege 1600 wbengine.exe Token: SeRestorePrivilege 1600 wbengine.exe Token: SeSecurityPrivilege 1600 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 3448 wrote to memory of 4304 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 83 PID 3448 wrote to memory of 4304 3448 2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe 83 PID 4304 wrote to memory of 4896 4304 notepad.exe 85 PID 4304 wrote to memory of 4896 4304 notepad.exe 85 PID 4896 wrote to memory of 2768 4896 cmd.exe 87 PID 4896 wrote to memory of 2768 4896 cmd.exe 87 PID 4896 wrote to memory of 3336 4896 cmd.exe 90 PID 4896 wrote to memory of 3336 4896 cmd.exe 90 PID 4304 wrote to memory of 1992 4304 notepad.exe 92 PID 4304 wrote to memory of 1992 4304 notepad.exe 92 PID 1992 wrote to memory of 3340 1992 cmd.exe 94 PID 1992 wrote to memory of 3340 1992 cmd.exe 94 PID 1992 wrote to memory of 3964 1992 cmd.exe 95 PID 1992 wrote to memory of 3964 1992 cmd.exe 95 PID 4304 wrote to memory of 1488 4304 notepad.exe 96 PID 4304 wrote to memory of 1488 4304 notepad.exe 96 PID 1488 wrote to memory of 4976 1488 cmd.exe 98 PID 1488 wrote to memory of 4976 1488 cmd.exe 98 PID 4304 wrote to memory of 348 4304 notepad.exe 102 PID 4304 wrote to memory of 348 4304 notepad.exe 102 -
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\2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-17_9f99b9ecdb90b991aa0eb5884523185f_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3448 -
C:\Users\Admin\AppData\Roaming\notepad.exe"C:\Users\Admin\AppData\Roaming\notepad.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:4304 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4896 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2768
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3336
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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:1992 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3340
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3964
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1488 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4976
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ THIS.txt3⤵PID:348
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4796
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1600
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2356
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3192
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
165KB
MD59f99b9ecdb90b991aa0eb5884523185f
SHA15d99a9343765bb758f8ee85585dd376ec190c6e4
SHA2563bac13b433b453c3db0f70f4e3ce07a2c1108a0892bac358a1d1b38a30e1cd08
SHA5125c7a8f872bd0c5800e60e164eb605650eac06a6fc07322ab78274cd9c024e08c7cb8797580ecfb9067efd0ab6a1117e5c23fd78b4e6256ccecea4997f0859ed5
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Filesize
116B
MD58997745ddb6aa0ec242fedebb654f82f
SHA19c3b22208cede1c038ae8a05f021d2c2d7060b5a
SHA256379e87e41323764decd229c8838aff8f17b334afe0c126737ad343e31fd9c94b
SHA512597c97b8afe2f37437b57a2f21206625ecf8bf1abf31f776e45ef4503c06152ef89d5855c160296f564abcb801161a9e35e4c4deb903b4cef794e187d8f7f506