Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20250129-en -
resource tags
arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system -
submitted
07-02-2025 00:42
Static task
static1
Behavioral task
behavioral1
Sample
6233c74d44b7206f00d9c86ccac29577e3ea5f4b8a4a8cf8faf64d159d0e10bd.dll
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
6233c74d44b7206f00d9c86ccac29577e3ea5f4b8a4a8cf8faf64d159d0e10bd.dll
Resource
win10v2004-20250129-en
General
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Target
6233c74d44b7206f00d9c86ccac29577e3ea5f4b8a4a8cf8faf64d159d0e10bd.dll
-
Size
2.7MB
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MD5
4d9d368872e1d819968c6aba4938fd61
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SHA1
dc22a03c0bca99fef3a8e9e801fe9e43cda240be
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SHA256
6233c74d44b7206f00d9c86ccac29577e3ea5f4b8a4a8cf8faf64d159d0e10bd
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SHA512
ba176147280cfa54670c49befcc7f49ce50a4a41214718e647a1fe19ae4b61fce1fecd7785bb284a20f14523ff8d91a03e72a36f0e4703b5c284cc3f85070129
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SSDEEP
49152:ydhvtC1w3DBJXHUlz6b13GtTfOL7vPsBjLAgbIYETghETcltJf:ydysBVHWz6b13GtTfOL7vPsBjLAgbIYl
Malware Config
Extracted
bumblebee
ALL0604
192.236.198.63:443
Signatures
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Bumblebee family
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Enumerates VirtualBox registry keys 2 TTPs 5 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse rundll32.exe -
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__ rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__ rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe -
Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions rundll32.exe -
Blocklisted process makes network request 6 IoCs
flow pid Process 25 4688 rundll32.exe 32 4688 rundll32.exe 44 4688 rundll32.exe 54 4688 rundll32.exe 68 4688 rundll32.exe 69 4688 rundll32.exe -
Checks BIOS information in registry 2 TTPs 3 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate rundll32.exe -
Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2436272344-4274332273-444425594-1000\SOFTWARE\Wine rundll32.exe -
Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
description ioc Process File opened (read-only) \??\VBoxMiniRdrDN rundll32.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
pid Process 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe 4688 rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\6233c74d44b7206f00d9c86ccac29577e3ea5f4b8a4a8cf8faf64d159d0e10bd.dll,#11⤵
- Enumerates VirtualBox registry keys
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Looks for VirtualBox Guest Additions in registry
- Blocklisted process makes network request
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Checks for VirtualBox DLLs, possible anti-VM trick
- Suspicious behavior: EnumeratesProcesses
PID:4688