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Analysis
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max time kernel
156s -
max time network
169s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
02/12/2022, 19:54
Static task
static1
Behavioral task
behavioral1
Sample
Annabelle.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
Annabelle.exe
Resource
win10v2004-20220812-en
Errors
General
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Target
Annabelle.exe
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Size
15.9MB
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MD5
0f743287c9911b4b1c726c7c7edcaf7d
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SHA1
9760579e73095455fcbaddfe1e7e98a2bb28bfe0
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SHA256
716335ba5cd1e7186c40295b199190e2b6655e48f1c1cbe12139ba67faa5e1ac
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SHA512
2a6dd6288303700ef9cb06ae1efeb1e121c89c97708e5ecd15ed9b2a35d0ecff03d8da58b30daeadad89bd38dc4649521ada149fb457408e5a2bdf1512f88677
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SSDEEP
393216:UMwm0qBknxdEX+LbMUgoSZmWSmh4aaRN22ChHCMNku1y:UMcKX+Lbjgd7W1RNVC9ku1
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Annabelle.exe" Annabelle.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection Annabelle.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1" Annabelle.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Annabelle.exe -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Disables RegEdit via registry modification 2 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" Annabelle.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" Annabelle.exe -
Disables Task Manager via registry modification
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Disables use of System Restore points 1 TTPs
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Modifies Windows Firewall 1 TTPs 1 IoCs
pid Process 3784 NetSh.exe -
Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\GrantOut.raw.ANNABELLE Annabelle.exe File opened for modification C:\Users\Admin\Pictures\GrantUse.tiff.ANNABELLE Annabelle.exe File opened for modification C:\Users\Admin\Pictures\SplitConnect.tif.ANNABELLE Annabelle.exe File opened for modification C:\Users\Admin\Pictures\UnlockUnregister.crw.ANNABELLE Annabelle.exe File opened for modification C:\Users\Admin\Pictures\UseRename.raw.ANNABELLE Annabelle.exe File opened for modification C:\Users\Admin\Pictures\DebugUndo.png.ANNABELLE Annabelle.exe File opened for modification C:\Users\Admin\Pictures\ExpandProtect.crw.ANNABELLE Annabelle.exe -
Sets file execution options in registry 2 TTPs 64 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\dllhost.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad++.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mmc.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Autoruns64.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sethc.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rundll32.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\webcheck.dll\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\control.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCuiL.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Autoruns64.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskkill.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\attrib.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\wmplayer.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\powershell.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rundll.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\cabinet.dll\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\shellstyle.dll\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\cmd.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\microsoftedge.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\gpedit.msc\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\systemexplorer.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\chkdsk.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\cmd.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\firefox.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\firefox.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\UserAccountControlSettings.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskkill.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rasman.dll Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\logoff.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\attrib.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mspaint.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\DCIMAN32.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\secpol.msc Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\recoverydrive.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\chrome.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad++.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCuiL.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sethc.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rasman.dll\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\url.dll\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\secpol.msc\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\recoverydrive.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\logoff.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\gpedit.msc Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\bcdedit.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\bcdedit.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\wmplayer.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Autoruns.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\systemexplorer.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\chkdsk.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mpg4dmod.dll Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\microsoftedge.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\UserAccountControlSettings.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Autoruns.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mydocs.dll\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\iexplore.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\powershell.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\dllhost.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ksuser.dll Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\webcheck.dll Annabelle.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation Annabelle.exe -
Adds Run key to start application 2 TTPs 3 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UpdateBackup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Annabelle.exe" Annabelle.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UpdateBackup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Annabelle.exe" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\UpdateBackup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Annabelle.exe" Annabelle.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Annabelle.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks SCSI registry key(s) 3 TTPs 3 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 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Interacts with shadow copies 2 TTPs 3 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4892 vssadmin.exe 452 vssadmin.exe 4704 vssadmin.exe -
Modifies data under HKEY_USERS 15 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" LogonUI.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "169" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM LogonUI.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3664 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeDebugPrivilege 3664 taskmgr.exe Token: SeSystemProfilePrivilege 3664 taskmgr.exe Token: SeCreateGlobalPrivilege 3664 taskmgr.exe Token: SeBackupPrivilege 4628 vssvc.exe Token: SeRestorePrivilege 4628 vssvc.exe Token: SeAuditPrivilege 4628 vssvc.exe Token: SeShutdownPrivilege 3804 shutdown.exe Token: SeRemoteShutdownPrivilege 3804 shutdown.exe -
Suspicious use of FindShellTrayWindow 64 IoCs
pid Process 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe -
Suspicious use of SendNotifyMessage 64 IoCs
pid Process 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe 3664 taskmgr.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3392 LogonUI.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 3676 wrote to memory of 4892 3676 Annabelle.exe 86 PID 3676 wrote to memory of 4892 3676 Annabelle.exe 86 PID 3676 wrote to memory of 452 3676 Annabelle.exe 88 PID 3676 wrote to memory of 452 3676 Annabelle.exe 88 PID 3676 wrote to memory of 4704 3676 Annabelle.exe 91 PID 3676 wrote to memory of 4704 3676 Annabelle.exe 91 PID 3676 wrote to memory of 3784 3676 Annabelle.exe 89 PID 3676 wrote to memory of 3784 3676 Annabelle.exe 89 PID 3676 wrote to memory of 3804 3676 Annabelle.exe 96 PID 3676 wrote to memory of 3804 3676 Annabelle.exe 96 -
System policy modification 1 TTPs 9 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System Annabelle.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Annabelle.exe Key created \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer Annabelle.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoControlPanel = "1" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System Annabelle.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\WindowsDefenderMAJ = "1" Annabelle.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskMgr = "1" Annabelle.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoRun = "1" Annabelle.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" Annabelle.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Annabelle.exe"C:\Users\Admin\AppData\Local\Temp\Annabelle.exe"1⤵
- Modifies WinLogon for persistence
- Modifies Windows Defender Real-time Protection settings
- UAC bypass
- Disables RegEdit via registry modification
- Modifies extensions of user files
- Sets file execution options in registry
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3676 -
C:\Windows\SYSTEM32\vssadmin.exevssadmin delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:4892
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C:\Windows\SYSTEM32\vssadmin.exevssadmin delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:452
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C:\Windows\SYSTEM32\NetSh.exeNetSh Advfirewall set allprofiles state off2⤵
- Modifies Windows Firewall
PID:3784
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C:\Windows\SYSTEM32\vssadmin.exevssadmin delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:4704
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C:\Windows\System32\shutdown.exe"C:\Windows\System32\shutdown.exe" -r -t 00 -f2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3804
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3664
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4628
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x4 /state0:0xa39bb055 /state1:0x41c64e6d1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3392
Network
MITRE ATT&CK Enterprise v6
Persistence
Modify Existing Service
2Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Defense Evasion
Bypass User Account Control
1Disabling Security Tools
2File Deletion
2Modify Registry
6