General
- Target core-release.exe
- Size 69.5MB
- Sample260723-h8ftqaaa43
- SHA256 71462455b412c5ec1048dc1667d45c04282f45846fc51bc28f1aa5628e8827b7
- MD5 d7a74288bd2092203c0903cf2e72aad9
- SHA1 1c819761944955b1b1494252fc1bffec99b95349
- SHA512 0e3a718d6b9995720249edd6b310e917a4f1807277636a64203c6a4bf43777bcd6a8fd6854211fe19c594adae1044956f921f34d9d472fa39536fd2e75010536
- SSDEEP 1572864:CLdkg9YKapIRzmOxOrqu+TON2WTYWgTgQo2iUA+lhGRN17:C2RNpnOorquGNyYWGvo20RH7
- TLSH T1BEF7339A8B8397B5D547AE304E7F1B38EB52F3C6C53110F3126C2E5AB55A86ED890C34
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
core-release.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
core-release.exe
Resource
win10ltsc2021-20260513-en
Behavioral task
behavioral3
Sample
core-release.exe
Resource
win11-20260513-en
Behavioral task
behavioral4
Sample
core-release.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Targets
-
- Target core-release.exe
- Size 69.5MB
- SHA256 71462455b412c5ec1048dc1667d45c04282f45846fc51bc28f1aa5628e8827b7
- MD5 d7a74288bd2092203c0903cf2e72aad9
- SHA1 1c819761944955b1b1494252fc1bffec99b95349
- SHA512 0e3a718d6b9995720249edd6b310e917a4f1807277636a64203c6a4bf43777bcd6a8fd6854211fe19c594adae1044956f921f34d9d472fa39536fd2e75010536
- SSDEEP 1572864:CLdkg9YKapIRzmOxOrqu+TON2WTYWgTgQo2iUA+lhGRN17:C2RNpnOorquGNyYWGvo20RH7
- TLSH T1BEF7339A8B8397B5D547AE304E7F1B38EB52F3C6C53110F3126C2E5AB55A86ED890C34
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Windows security bypass
-
Enumerates VirtualBox registry keys
-
Identifies VirtualBox via ACPI registry values (likely anti-VM)
-
Looks for VirtualBox Guest Additions in registry
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
-
Looks for VMWare Tools registry key
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Drops startup file
-
Executes dropped EXE
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Identifies Wine through registry keys
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
-
Loads dropped DLL
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Prevents Microsoft Defender from scanning certain paths by adding an exclusion.
Uses the Powershell Add-MpPreference cmdlet to exclude paths from being scanned by Microsoft Defender.
-
System Binary Proxy Execution: Rundll32
Abuse Rundll32 to proxy execution of malicious code.
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Accesses cryptocurrency files/wallets, possible credential harvesting
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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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Hide Artifacts: Hidden Window
Windows that would typically be displayed when an application carries out an operation can be hidden.
-
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
-
Obfuscated Files or Information: Command Obfuscation
Adversaries may obfuscate content during command execution to impede detection.
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Enumerates processes with tasklist
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Executes a VBScript file via the Windows Script Host.
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
5PowerShell
3Visual Basic
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Hide Artifacts
3File/Path Exclusions
1Hidden Window
1Ignore Process Interrupts
1Impair Defenses
2Disable or Modify Tools
2Modify Registry
2Obfuscated Files or Information
1Command Obfuscation
1System Binary Proxy Execution
1Rundll32
1Virtualization/Sandbox Evasion
5Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
3Credentials In Files
3