General
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Target
MBSetup.exe
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Size
2.5MB
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Sample
240703-h7sf5asfrc
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MD5
b6d8b7e6f74196f62caba2ca77a7ae91
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SHA1
6ac9c99f084b5772440e2f135b8d5365f7f45314
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SHA256
74b0bf9c17091ab1c6c61af0aefbc599f1ecc0fff6dee0144a3dfd5cd1f5e18f
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SHA512
ad58bc7b626a13606e3f44df7188b2420e0f31ecb55632eac4b6a05dc1574f1ec1b0ef6b52e11832713c6f8f91c807fe3a815699d0748284993ecc54f2823044
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SSDEEP
49152:/5wZat2ranBQjvaq/Gtl8StQyfvE0Z3R0nxiIq2ddBzOnX:/5wZauUBQjvL0SKtQRq2cnX
Behavioral task
behavioral1
Sample
MBSetup.exe
Resource
win10-20240404-en
Malware Config
Targets
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Target
MBSetup.exe
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Size
2.5MB
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MD5
b6d8b7e6f74196f62caba2ca77a7ae91
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SHA1
6ac9c99f084b5772440e2f135b8d5365f7f45314
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SHA256
74b0bf9c17091ab1c6c61af0aefbc599f1ecc0fff6dee0144a3dfd5cd1f5e18f
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SHA512
ad58bc7b626a13606e3f44df7188b2420e0f31ecb55632eac4b6a05dc1574f1ec1b0ef6b52e11832713c6f8f91c807fe3a815699d0748284993ecc54f2823044
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SSDEEP
49152:/5wZat2ranBQjvaq/Gtl8StQyfvE0Z3R0nxiIq2ddBzOnX:/5wZauUBQjvL0SKtQRq2cnX
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Drops file in Drivers directory
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Modifies RDP port number used by Windows
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Sets service image path in registry
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Impair Defenses: Safe Mode Boot
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Downloads MZ/PE file
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops file in System32 directory
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Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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Modifies WinLogon for persistence
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Component Object Model Hijacking
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
Impair Defenses
1Safe Mode Boot
1Modify Registry
4Subvert Trust Controls
1Install Root Certificate
1