Analysis
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max time kernel
139s -
max time network
164s -
platform
windows10-2004_x64 -
resource
win10v2004-20250314-en -
resource tags
arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system -
submitted
14/03/2025, 07:45
Static task
static1
Behavioral task
behavioral1
Sample
abaf649e6440033ea250691e6bff02c8924a5f9b827168f576606835d7a820a0.dll
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
abaf649e6440033ea250691e6bff02c8924a5f9b827168f576606835d7a820a0.dll
Resource
win10v2004-20250314-en
General
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Target
abaf649e6440033ea250691e6bff02c8924a5f9b827168f576606835d7a820a0.dll
-
Size
2.1MB
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MD5
5758813f20b1b3f041b20f700e61ca2c
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SHA1
5cf76172c4b3c33f2f64536ebdf7d6a5935350d0
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SHA256
abaf649e6440033ea250691e6bff02c8924a5f9b827168f576606835d7a820a0
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SHA512
69b1955969eb7f7712698360ce85baad22fa90c3ca3b58fdaeb1637f7119639aecb9eb215e35c55aa0a2c375601a54633fc3b26badcc24b350251307130870d9
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SSDEEP
49152:tbhl087l5fJeS/DrSoUtP9qqyD8e3+DSP9yJoZS:tLTfJtylPyD8e5MJoZS
Malware Config
Extracted
bumblebee
RA1104
142.91.3.109:443
23.83.133.216:443
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\VBoxVideo rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF 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 5 IoCs
flow pid Process 1 4620 rundll32.exe 2 4620 rundll32.exe 5 4620 rundll32.exe 6 4620 rundll32.exe 10 4620 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-1-5-21-3342763580-2723508992-2885672917-1000\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 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe 4620 rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\abaf649e6440033ea250691e6bff02c8924a5f9b827168f576606835d7a820a0.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:4620