General
- Target core-silent.exe
- Size 73.5MB
- Sample260704-eja1dsaw9z
- SHA256 6f8075452b80f23418fd92e80429999ae270a6c4b88ce22cfb4223ba9853d6e1
- MD5 f61219176469a9f98818c223a40ab36e
- SHA1 39c94ed1e92f67fe524f62715530b14f27e2bbb5
- SHA512 d2d12942f6b13f79f345fd0b171aa087f0c314704b375bf920a619c16125f574576d15d26ec70a7f888ed8fb77ca100b1cac9411125918274b97d5e14fec96e7
- SSDEEP 1572864:eLdkKBpS5U6Up2tFIABZI48z2Fi/S8JKBUmy+N5Xe6EfB747:e2r5Uxp4aABZVPArg/bXeB747
- TLSH T1C3F733848355831EC1DFAFFC512F06E7EE275DF0A22AA4BB0656C474F6D8066D68C24B
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
core-silent.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
core-silent.exe
Resource
win10ltsc2021-20260513-en
Behavioral task
behavioral3
Sample
core-silent.exe
Resource
win11-20260513-en
Behavioral task
behavioral4
Sample
core-silent.exe
Resource
win11ltsc2024-20260629-en
Malware Config
Targets
-
- Target core-silent.exe
- Size 73.5MB
- SHA256 6f8075452b80f23418fd92e80429999ae270a6c4b88ce22cfb4223ba9853d6e1
- MD5 f61219176469a9f98818c223a40ab36e
- SHA1 39c94ed1e92f67fe524f62715530b14f27e2bbb5
- SHA512 d2d12942f6b13f79f345fd0b171aa087f0c314704b375bf920a619c16125f574576d15d26ec70a7f888ed8fb77ca100b1cac9411125918274b97d5e14fec96e7
- SSDEEP 1572864:eLdkKBpS5U6Up2tFIABZI48z2Fi/S8JKBUmy+N5Xe6EfB747:e2r5Uxp4aABZVPArg/bXeB747
- TLSH T1C3F733848355831EC1DFAFFC512F06E7EE275DF0A22AA4BB0656C474F6D8066D68C24B
- 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
-
Badlisted process makes network request
Network request originating from process or tool commonly abused by malware.
-
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
-
Looks for VMWare services registry key.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Drops startup file
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Executes dropped EXE
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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.
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Obfuscated Files or Information: Command Obfuscation
Adversaries may obfuscate content during command execution to impede detection.
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Enumerates processes with tasklist
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
3PowerShell
3Scheduled 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