bumblebee | 43a1c18af9fd05064e90c71f096262524ca181aa98df211c2365396067e9994b

Resubmissions

16-10-2022 15:45

221016-s7jjbshffn 10

19-09-2022 15:00

220919-sdbxdshgdj 10

Analysis

max time kernel
13s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
16-10-2022 15:45

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General

Target

XLojGEhKNSWWGb.bat
Size

973B
MD5

63de17452db09348dea473ff97592d32
SHA1

9d5bdddbc277b1440ed0097df5dc6041f2cdec56
SHA256

29f73ca6dd1c1f7477eec453215140feb67504f97ea58dbd2835411585eef24a
SHA512

059453fa5266b4b453fb05026e6ee5b3c2646c3aeac9e79e09f0a3c6ab6a531a9a8866ed0ce9693791ff567be5b099a157f1ad58daeef2235051208f60e209c2

Score

10^/10

bumblebee 1909 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1909

172.93.193.42:443

45.153.243.126:443

213.227.154.19:443

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\VBoxMouse	rundll32.exe
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

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-1-5-21-999675638-2867687379-27515722-1000\SOFTWARE\Wine	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
860	rundll32.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 860	1248	cmd.exe	27
PID 1248 wrote to memory of 860	1248	cmd.exe	27
PID 1248 wrote to memory of 860	1248	cmd.exe	27

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\XLojGEhKNSWWGb.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Windows\system32\rundll32.exe
  rundll32 uOAxPaiprCVzvn.dll,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:860

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/860-55-0x0000000001EB0000-0x000000000200F000-memory.dmp

Filesize
1.4MB

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