General
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Target
Wurst_Installer.exe
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Size
7.5MB
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Sample
240416-brdvgaff2v
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MD5
df6c57f4fe366f4ca90052b68398cae2
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SHA1
e08dc7d005e014071561cbc93232c01c4475f261
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SHA256
096111210234dc3917b632a0d8e1958fbbf7a9124ee1e8948fb74cb3c65fbbf0
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SHA512
04e8260460898d5d2f353def0e83215a3da8f5da796386fc2d8ac84ec1e9bf3cbcd34f9c705ebb9c7473cda0114d62aeb77d71dc7b4013dcfabe5e833b359e04
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SSDEEP
196608:tdgkqiCs/SeKQ0o8hFX52x9gAD60YOAHWH1:Hqev0oyF8wU2nWH1
Static task
static1
Behavioral task
behavioral1
Sample
Wurst_Installer.exe
Resource
win10v2004-20240412-en
Malware Config
Targets
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Target
Wurst_Installer.exe
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Size
7.5MB
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MD5
df6c57f4fe366f4ca90052b68398cae2
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SHA1
e08dc7d005e014071561cbc93232c01c4475f261
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SHA256
096111210234dc3917b632a0d8e1958fbbf7a9124ee1e8948fb74cb3c65fbbf0
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SHA512
04e8260460898d5d2f353def0e83215a3da8f5da796386fc2d8ac84ec1e9bf3cbcd34f9c705ebb9c7473cda0114d62aeb77d71dc7b4013dcfabe5e833b359e04
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SSDEEP
196608:tdgkqiCs/SeKQ0o8hFX52x9gAD60YOAHWH1:Hqev0oyF8wU2nWH1
Score10/10-
Contains code to disable Windows Defender
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Obfuscated with Agile.Net obfuscator
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
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Adds Run key to start application
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Matrix ATT&CK v13
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
2Virtualization/Sandbox Evasion
1