bumblebee | 428b46215b5c992fd7aa4d3e6edabce901928bad7231050eda6b1a64344e5854

Analysis

max time kernel
407s
max time network
410s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
21-09-2022 00:19

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General

Target

Run-DLL.bat
Size

34B
MD5

396374ee917bc1abedd996c8152a4454
SHA1

dd69c36489b15a4057d8cceef4b1ff3fad4f8a2a
SHA256

5663fcbbdbfdd1b78cee360919363009cdeaa58189ce5aec87d2014f02cc4001
SHA512

3a3e3e7015a9818741d0641538bf6b0f77066b206ebc0f8b76127386b79ab05993ebb9a35767f22bac02540ec6d6a686c8ed28c51706b4b4e7f9c7faa1012b5d

Score

10^/10

bumblebee 1909 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1909

108.177.235.29:443

23.106.160.117:443

23.106.215.133:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan bumblebee

Enumerates VirtualBox registry keys 2 TTPs 5 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	rundll32.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	rundll32.exe

Checks BIOS information in registry 2 TTPs 3 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Wine	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1880	rundll32.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 736 wrote to memory of 1880	736	cmd.exe	28
PID 736 wrote to memory of 1880	736	cmd.exe	28
PID 736 wrote to memory of 1880	736	cmd.exe	28

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Run-DLL.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:736
- C:\Windows\system32\rundll32.exe
  rundll32.exe nWysXc.bin,CreateTask
  2⤵
  - Enumerates VirtualBox registry keys
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Looks for VirtualBox Guest Additions in registry
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:1880

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1880-55-0x0000000001DC0000-0x0000000001F1F000-memory.dmp

Filesize
1.4MB

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