Analysis
- max time kernel
150s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
03/08/2026, 02:48
Static task
static1
Behavioral task
behavioral1
Sample
nexura.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
nexura.exe
Resource
win11ltsc2024-20260709-en
General
- Target nexura.exe
- Size 518KB
- Sample260803-dapazsxbpc
- SHA256 b319985762af88e0fb55ce4d7b992002be4cb79df0379a9e55dd8056ac710e09
- MD5 aece87d3e06f802a4081b87628542ca4
- SHA1 0f2a433f5fa924648b949478689ceb0db38d3e53
- SHA512 24bfc2ad9c05c653620efdbdc59b1231234be749ee32e4937d4abf9837bc102c0617088ee6bc456e6fd2174ce46faddb4c6073aeb77d24d867a3825ab03930fe
- SSDEEP 6144:FRNph0ZTqzueOqbgK3AvnWwoOhRc1egUERkOw+V3ltkOdKlH+g19OU3w+gojM+eN:L/h0NqlZgoAB3RMmgryjXpulr1dS
- TLSH T1FDB43A147FA98E08E490253E455E0A09DBEAD1F226327303370AEF615D459DEDE2D3EB
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Family: Dracula, Samurai
Dracula aka Samurai is a stealer written in C#.
- Detects Dracula aka Samurai Stealer payload 1 IoCs
resource yara_rule behavioral2/memory/2076-116-0x000001FC54790000-0x000001FC547BA000-memory.dmp family_dracula_stealer - Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\System32\\userinit.exe,C:\\Windows\\xdwdSystem32\\Defender.exe" nexura.exe - Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
- Executes dropped EXE 6 IoCs
pid Process 4540 MalwareDef.exe 4580 Defender.exe 2076 Defender.exe 1940 Defender.exe 696 Defender.exe 3156 Defender.exe - Loads dropped DLL 14 IoCs
pid Process 3492 Process not Found 5728 Process not Found 4540 MalwareDef.exe 4580 Defender.exe 2076 Defender.exe 5796 Process not Found 1264 findstr.exe 4200 netsh.exe 1940 Defender.exe 696 Defender.exe 2896 Process not Found 1484 netsh.exe 4612 findstr.exe 3156 Defender.exe - Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Defender.exe Key opened \REGISTRY\USER\S-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Defender.exe Key opened \REGISTRY\USER\S-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Defender.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Looks up external IP address via web service 1 TTPs 10 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 1 api.ipify.org 1 icanhazip.com 1 ipinfo.io 8 ipinfo.io 20 icanhazip.com 21 api.ipify.org 26 api.ipify.org 10 api.ipify.org 12 api.ipify.org 19 api.ipify.org - Drops file in Windows directory 18 IoCs
description ioc Process File opened for modification C:\Windows\xdwdSystem32\Defender.exe nexura.exe File created C:\Windows\Web\MalwareDef.exe nexura.exe File opened for modification C:\Windows\Web\MalwareDef.exe nexura.exe File opened for modification C:\Windows\xdwdSystem32\Defender.exe Defender.exe File opened for modification C:\Windows\Web\MalwareDef.exe Defender.exe File opened for modification C:\Windows\Web\MalwareDef.exe Defender.exe File created C:\Windows\xdwd.dll nexura.exe File opened for modification C:\Windows\xdwd.dll nexura.exe File opened for modification C:\Windows\xdwdSystem32\Defender.exe Defender.exe File created C:\Windows\xdwdSystem32\Defender.exe nexura.exe File opened for modification C:\Windows\xdwdSystem32\Defender.exe MalwareDef.exe File opened for modification C:\Windows\Web\MalwareDef.exe MalwareDef.exe File opened for modification C:\Windows\xdwdSystem32\Defender.exe Defender.exe File opened for modification C:\Windows\Web\MalwareDef.exe Defender.exe File opened for modification C:\Windows\xdwdSystem32\Defender.exe Defender.exe File opened for modification C:\Windows\xdwdSystem32\Defender.exe Defender.exe File opened for modification C:\Windows\Web\MalwareDef.exe Defender.exe File opened for modification C:\Windows\Web\MalwareDef.exe Defender.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 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 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 - Executes a command shell one-liner 1 TTPs 4 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 3164 cmd.exe 5072 cmd.exe 948 cmd.exe 2952 cmd.exe - System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 4 IoCs
Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.
pid Process 4200 netsh.exe 2952 cmd.exe 1484 netsh.exe 948 cmd.exe - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 Defender.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier Defender.exe - Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2516 schtasks.exe 4924 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4540 MalwareDef.exe 4540 MalwareDef.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 1264 findstr.exe 1264 findstr.exe 4200 netsh.exe 4200 netsh.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe 2076 Defender.exe - Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeDebugPrivilege 4928 nexura.exe Token: SeDebugPrivilege 4540 MalwareDef.exe Token: SeDebugPrivilege 4580 Defender.exe Token: SeDebugPrivilege 2076 Defender.exe Token: SeIncBasePriorityPrivilege 2076 Defender.exe Token: SeDebugPrivilege 1940 Defender.exe Token: SeDebugPrivilege 696 Defender.exe Token: SeDebugPrivilege 3156 Defender.exe - Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4928 wrote to memory of 1292 4928 nexura.exe 91 PID 4928 wrote to memory of 3164 4928 nexura.exe 92 PID 4928 wrote to memory of 5072 4928 nexura.exe 95 PID 3164 wrote to memory of 4924 3164 cmd.exe 97 PID 5072 wrote to memory of 2516 5072 cmd.exe 98 PID 4928 wrote to memory of 2076 4928 nexura.exe 103 PID 2076 wrote to memory of 948 2076 Defender.exe 104 PID 948 wrote to memory of 4272 948 cmd.exe 106 PID 948 wrote to memory of 4200 948 cmd.exe 107 PID 948 wrote to memory of 1264 948 cmd.exe 108 PID 2076 wrote to memory of 2952 2076 Defender.exe 112 PID 2952 wrote to memory of 708 2952 cmd.exe 114 PID 2952 wrote to memory of 1484 2952 cmd.exe 115 PID 2952 wrote to memory of 4612 2952 cmd.exe 116 - 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.
- outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Defender.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Defender.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\nexura.exe"C:\Users\Admin\AppData\Local\Temp\nexura.exe"1⤵
- Modifies WinLogon for persistence
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4928 -
C:\Windows\SYSTEM32\CMD.exe"CMD" netsh advfirewall firewall add rule name="u]A*fFe;fA1pfW" dir=in action=allow program="C:\Windows\xdwdSystem32\Defender.exe" enable=yes & exit2⤵PID:1292
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\xdwdSystem32\Defender.exe" /RL HIGHEST & exit2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:3164 -
C:\Windows\system32\schtasks.exeschtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\xdwdSystem32\Defender.exe" /RL HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
PID:4924
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\Web\MalwareDef.exe" /RL HIGHEST & exit2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:5072 -
C:\Windows\system32\schtasks.exeschtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\Web\MalwareDef.exe" /RL HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
PID:2516
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C:\Windows\xdwdSystem32\Defender.exe"C:\Windows\xdwdSystem32\Defender.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Drops file in Windows directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2076 -
C:\Windows\SYSTEM32\cmd.exe"cmd" /C chcp 65001 && netsh wlan show profiles | findstr All3⤵
- Executes a command shell one-liner
- System Network Configuration Discovery: Wi-Fi Discovery
- Suspicious use of WriteProcessMemory
PID:948 -
C:\Windows\system32\chcp.comchcp 650014⤵PID:4272
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C:\Windows\system32\netsh.exenetsh wlan show profiles4⤵
- Loads dropped DLL
- Event Triggered Execution: Netsh Helper DLL
- System Network Configuration Discovery: Wi-Fi Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4200
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C:\Windows\system32\findstr.exefindstr All4⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:1264
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C:\Windows\SYSTEM32\cmd.exe"cmd" /C chcp 65001 && netsh wlan show profiles | findstr All3⤵
- Executes a command shell one-liner
- System Network Configuration Discovery: Wi-Fi Discovery
- Suspicious use of WriteProcessMemory
PID:2952 -
C:\Windows\system32\chcp.comchcp 650014⤵PID:708
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C:\Windows\system32\netsh.exenetsh wlan show profiles4⤵
- Loads dropped DLL
- Event Triggered Execution: Netsh Helper DLL
- System Network Configuration Discovery: Wi-Fi Discovery
PID:1484
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C:\Windows\system32\findstr.exefindstr All4⤵
- Loads dropped DLL
PID:4612
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C:\Windows\Web\MalwareDef.exeC:\Windows\Web\MalwareDef.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4540
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C:\Windows\xdwdSystem32\Defender.exeC:\Windows\xdwdSystem32\Defender.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4580
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C:\Windows\xdwdSystem32\Defender.exe"C:\Windows\xdwdSystem32\Defender.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1940
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C:\Windows\xdwdSystem32\Defender.exe"C:\Windows\xdwdSystem32\Defender.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:696
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C:\Windows\xdwdSystem32\Defender.exe"C:\Windows\xdwdSystem32\Defender.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3156
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Event Triggered Execution
2AppInit DLLs
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Event Triggered Execution
2AppInit DLLs
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Windows\xdwd.dll
- Size 136KB
- SHA256 35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66
- MD5 16e5a492c9c6ae34c59683be9c51fa31
- SHA1 97031b41f5c56f371c28ae0d62a2df7d585adaba
- SHA512 20fd369172ef5e3e2fde388666b42e8fe5f0c2bfa338c0345f45e98af6561a249ba3ecc48c3f16efcc73f02ecb67b3ddb1e2e8f0e77d18fa00ac34e6379e50b6
- SSDEEP 3072:t0iX+jLyDcqaH9a6DFHo6MjD7VbZaZaZ8Xwlk4MHWZpt:t07yDSvdoRj2up
- TLSH T151D35B0772A500BFE1668638C5630A09E777B8211770DBAF33A4429D9F277E19D3AF61
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\xdwdSystem32\Defender.exe
- Size 518KB
- SHA256 b319985762af88e0fb55ce4d7b992002be4cb79df0379a9e55dd8056ac710e09
- MD5 aece87d3e06f802a4081b87628542ca4
- SHA1 0f2a433f5fa924648b949478689ceb0db38d3e53
- SHA512 24bfc2ad9c05c653620efdbdc59b1231234be749ee32e4937d4abf9837bc102c0617088ee6bc456e6fd2174ce46faddb4c6073aeb77d24d867a3825ab03930fe
- SSDEEP 6144:FRNph0ZTqzueOqbgK3AvnWwoOhRc1egUERkOw+V3ltkOdKlH+g19OU3w+gojM+eN:L/h0NqlZgoAB3RMmgryjXpulr1dS
- TLSH T1FDB43A147FA98E08E490253E455E0A09DBEAD1F226327303370AEF615D459DEDE2D3EB
- MD5 SHA1 SHA512 SSDEEP TLSH