Overview
overview
10Static
static
8Ransomware...er.exe
windows10-2004-x64
8Ransomware...er.exe
windows11-21h2-x64
8Ransomware/7ev3n.exe
windows10-2004-x64
3Ransomware/7ev3n.exe
windows11-21h2-x64
Ransomware...le.exe
windows10-2004-x64
Ransomware...le.exe
windows11-21h2-x64
Ransomware...it.exe
windows10-2004-x64
10Ransomware...it.exe
windows11-21h2-x64
10Ransomware/Birele.exe
windows10-2004-x64
10Ransomware...r5.exe
windows10-2004-x64
10Ransomware...r5.exe
windows11-21h2-x64
10Ransomware...us.exe
windows10-2004-x64
10Ransomware...us.exe
windows11-21h2-x64
10Ransomware...er.exe
windows10-2004-x64
10Ransomware...er.exe
windows11-21h2-x64
10Ransomware...ll.exe
windows10-2004-x64
7Ransomware...ll.exe
windows11-21h2-x64
7Ransomware...ck.exe
windows10-2004-x64
8Ransomware...ck.exe
windows11-21h2-x64
7Ransomware/Dharma.exe
windows10-2004-x64
9Ransomware/Dharma.exe
windows11-21h2-x64
9Ransomware/Fantom.exe
windows10-2004-x64
10Ransomware/Fantom.exe
windows11-21h2-x64
10Ransomware...ab.exe
windows10-2004-x64
10Ransomware...ab.exe
windows11-21h2-x64
3Ransomware...ye.exe
windows10-2004-x64
Ransomware...ye.exe
windows11-21h2-x64
Ransomware...Eye.js
windows10-2004-x64
Ransomware...Eye.js
windows11-21h2-x64
Ransomware...pt.exe
windows10-2004-x64
10Ransomware...pt.exe
windows11-21h2-x64
10Ransomware...en.exe
windows10-2004-x64
8Analysis
- max time kernel
26s - max time network
30s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
11/05/2026, 22:52
Behavioral task
behavioral1
Sample
Ransomware/$uckyLocker.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral2
Sample
Ransomware/$uckyLocker.exe
Resource
win11-20260130-en
Behavioral task
behavioral3
Sample
Ransomware/7ev3n.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral4
Sample
Ransomware/7ev3n.exe
Resource
win11-20260130-en
Behavioral task
behavioral5
Sample
Ransomware/Annabelle.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral6
Sample
Ransomware/Annabelle.exe
Resource
win11-20260130-en
Behavioral task
behavioral7
Sample
Ransomware/BadRabbit.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral8
Sample
Ransomware/BadRabbit.exe
Resource
win11-20260130-en
Behavioral task
behavioral9
Sample
Ransomware/Birele.exe
Resource
win10v2004-20250619-en
Behavioral task
behavioral10
Sample
Ransomware/Cerber5.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral11
Sample
Ransomware/Cerber5.exe
Resource
win11-20260130-en
Behavioral task
behavioral12
Sample
Ransomware/CoronaVirus.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral13
Sample
Ransomware/CoronaVirus.exe
Resource
win11-20260130-en
Behavioral task
behavioral14
Sample
Ransomware/CryptoLocker.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral15
Sample
Ransomware/CryptoLocker.exe
Resource
win11-20260130-en
Behavioral task
behavioral16
Sample
Ransomware/CryptoWall.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral17
Sample
Ransomware/CryptoWall.exe
Resource
win11-20260130-en
Behavioral task
behavioral18
Sample
Ransomware/DeriaLock.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral19
Sample
Ransomware/DeriaLock.exe
Resource
win11-20260130-en
Behavioral task
behavioral20
Sample
Ransomware/Dharma.exe
Resource
win10v2004-20250619-en
Behavioral task
behavioral21
Sample
Ransomware/Dharma.exe
Resource
win11-20260130-en
Behavioral task
behavioral22
Sample
Ransomware/Fantom.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral23
Sample
Ransomware/Fantom.exe
Resource
win11-20260130-en
Behavioral task
behavioral24
Sample
Ransomware/GandCrab.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral25
Sample
Ransomware/GandCrab.exe
Resource
win11-20260130-en
Behavioral task
behavioral26
Sample
Ransomware/GoldenEye/GoldenEye.exe
Resource
win10v2004-20260130-en
Behavioral task
behavioral27
Sample
Ransomware/GoldenEye/GoldenEye.exe
Resource
win11-20260130-en
Behavioral task
behavioral28
Sample
Ransomware/GoldenEye/GoldenEye.js
Resource
win10v2004-20260130-en
Behavioral task
behavioral29
Sample
Ransomware/GoldenEye/GoldenEye.js
Resource
win11-20260130-en
Behavioral task
behavioral30
Sample
Ransomware/InfinityCrypt.exe
Resource
win10v2004-20250619-en
Behavioral task
behavioral31
Sample
Ransomware/InfinityCrypt.exe
Resource
win11-20260130-en
Behavioral task
behavioral32
Sample
Ransomware/Krotten.exe
Resource
win10v2004-20260130-en
Errors
General
- Target Ransomware/Annabelle.exe
- Size 15.9MB
- Sample260511-2tm42abt9v
- SHA256 716335ba5cd1e7186c40295b199190e2b6655e48f1c1cbe12139ba67faa5e1ac
- MD5 0f743287c9911b4b1c726c7c7edcaf7d
- SHA1 9760579e73095455fcbaddfe1e7e98a2bb28bfe0
- SHA512 2a6dd6288303700ef9cb06ae1efeb1e121c89c97708e5ecd15ed9b2a35d0ecff03d8da58b30daeadad89bd38dc4649521ada149fb457408e5a2bdf1512f88677
- SSDEEP 393216:UMwm0qBknxdEX+LbMUgoSZmWSmh4aaRN22ChHCMNku1y:UMcKX+Lbjgd7W1RNVC9ku1
- TLSH T1E9F633597210F68FC9679A71DA64EEF4E6603C66D30B920791E37DAB7D3C496CE000E2
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- 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\\Ransomware\\Annabelle.exe" Annabelle.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1" Annabelle.exe - Modifies Windows Defender Real-time Protection settings 3 TTPs 2 IoCs
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 - UAC bypass 3 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Annabelle.exe - Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
- 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-1-5-21-2714754311-527593155-1440850301-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" Annabelle.exe - Disables Task Manager via registry modification
- Disables use of System Restore points 1 TTPs
- Event Triggered Execution: Image File Execution Options Injection 1 TTPs 64 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mmc.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\webcheck.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\microsoftedge.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\gpedit.msc\Debugger = "RIP" 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\firefox.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\opera.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\url.dll 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\Autoruns.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskkill.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\yandex.exe 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\DCIMAN32.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\chrome.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\chkdsk.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\DBGHELP.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ksuser.dll 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\firefox.exe 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\systemexplorer.exe\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rundll.exe 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\mydocs.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\chrome.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\opera.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\attrib.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\rundll32.exe\Debugger = "RIP" 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\MSASCuiL.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\systemexplorer.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\attrib.exe 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\recoverydrive.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rundll.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\DCIMAN32.exe\Debugger = "RIP" 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\secpol.msc\Debugger = "RIP" Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\logoff.exe Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mpg4dmod.dll\Debugger = "RIP" 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 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\mspaint.exe Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mydocs.dll Annabelle.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\shellstyle.dll Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\yandex.exe\Debugger = "RIP" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\dllhost.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\logoff.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\notepad.exe\Debugger = "RIP" 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\UserAccountControlSettings.exe Annabelle.exe - Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 804 NetSh.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-1-5-21-2714754311-527593155-1440850301-1000\Control Panel\International\Geo\Nation Annabelle.exe - Impair Defenses: Safe Mode Boot 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\MinimalX = "1" 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\\Ransomware\\Annabelle.exe" Annabelle.exe Set value (str) \REGISTRY\USER\S-1-5-21-2714754311-527593155-1440850301-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UpdateBackup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Ransomware\\Annabelle.exe" Annabelle.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\UpdateBackup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Ransomware\\Annabelle.exe" Annabelle.exe - Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Annabelle.exe - ConfuserEx .NET packer 1 IoCs
Detects ConfuserEx .NET packer.
resource yara_rule behavioral5/memory/4016-0-0x000001DED1D80000-0x000001DED2D74000-memory.dmp ConfuserEx - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh NetSh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh NetSh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh NetSh.exe - Interacts with shadow copies 3 TTPs 3 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 3956 vssadmin.exe 4468 vssadmin.exe 3516 vssadmin.exe - Modifies data under HKEY_USERS 15 IoCs
description ioc Process Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM 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\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "158" 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\Themes\History\AutoColor = "0" 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\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" 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\ColorizationGlassAttribute = "1" LogonUI.exe - Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeBackupPrivilege 4204 vssvc.exe Token: SeRestorePrivilege 4204 vssvc.exe Token: SeAuditPrivilege 4204 vssvc.exe Token: SeShutdownPrivilege 4100 shutdown.exe Token: SeRemoteShutdownPrivilege 4100 shutdown.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1456 LogonUI.exe - Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 4016 wrote to memory of 3956 4016 Annabelle.exe 85 PID 4016 wrote to memory of 4468 4016 Annabelle.exe 86 PID 4016 wrote to memory of 3516 4016 Annabelle.exe 87 PID 4016 wrote to memory of 804 4016 Annabelle.exe 88 PID 4016 wrote to memory of 4100 4016 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 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 Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" 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 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 Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoRun = "1" Annabelle.exe - Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\Ransomware\Annabelle.exe"C:\Users\Admin\AppData\Local\Temp\Ransomware\Annabelle.exe"1⤵
- Modifies WinLogon for persistence
- Modifies Windows Defender DisableAntiSpyware settings
- Modifies Windows Defender Real-time Protection settings
- UAC bypass
- Disables RegEdit via registry modification
- Event Triggered Execution: Image File Execution Options Injection
- Checks computer location settings
- Impair Defenses: Safe Mode Boot
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4016 -
C:\Windows\SYSTEM32\vssadmin.exevssadmin delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:3956
-
-
C:\Windows\SYSTEM32\vssadmin.exevssadmin delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:4468
-
-
C:\Windows\SYSTEM32\vssadmin.exevssadmin delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:3516
-
-
C:\Windows\SYSTEM32\NetSh.exeNetSh Advfirewall set allprofiles state off2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
PID:804
-
-
C:\Windows\System32\shutdown.exe"C:\Windows\System32\shutdown.exe" -r -t 00 -f2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4100
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4204
-
C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x4 /state0:0xa39b1055 /state1:0x41c64e6d1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1456
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
3Windows Service
3Event Triggered Execution
2Image File Execution Options Injection
1Netsh Helper DLL
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
3Windows Service
3Event Triggered Execution
2Image File Execution Options Injection
1Netsh Helper DLL
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Direct Volume Access
1Impair Defenses
5Disable or Modify System Firewall
1Disable or Modify Tools
3Safe Mode Boot
1Indicator Removal
2File Deletion
2Modify Registry
6