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
Static task
static1
Behavioral task
behavioral1
Sample
nexura.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
nexura.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Targets
-
- Target nexura.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
-
Detects Dracula aka Samurai Stealer payload
-
Modifies WinLogon for persistence
-
Modifies boot configuration data using bcdedit
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Renames multiple (8188) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Disables RegEdit via registry modification
-
Disables Task Manager via registry modification
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Event Triggered Execution: AppInit DLLs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
-
Event Triggered Execution: Image File Execution Options Injection
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Credentials from Password Stores: Windows Credential Manager
Suspicious access to Credentials History.
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Executes dropped EXE
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Impair Defenses: Safe Mode Boot
-
Loads dropped DLL
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Accesses Microsoft Outlook profiles
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops file in System32 directory
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Hide Artifacts: Hidden Files and Directories
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
3AppInit DLLs
1Image File Execution Options Injection
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
3AppInit DLLs
1Image File Execution Options Injection
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
1Safe Mode Boot
1Modify Registry
3Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
2Credentials In Files
1Credentials in Registry
1