bumblebee | 086b85d86b1f8d8ce1140c1df1e9e0168c86d39caf4b9c83a68169248d1bdaf2

Analysis

max time kernel
122s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 19:41

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

oblot.dll
Size

1.3MB
MD5

9ef13647102e4284c30a7e3d3e2227c0
SHA1

36709e87fa7a99589253b45d842470315a67e2ca
SHA256

2457a1b0008c7059b5d58fffadad4e71f8332e9c09ac55f34b0a078363c29c87
SHA512

5ee2bd350f51a99bf7e467f9a868be58abcf177d831af7b24dcb8698182fadc60548363f8b7f16188b187800688eef1428c12c4b8a5fe325345b41360e981690
SSDEEP

24576:waBf87gheqqqguvaURKZX7FvqJ3eWrcQmS0FMnRWN3FctRdTaEg7v7mIPb9XJzb:gYaeO

Score

10^/10

bumblebee 0905r evasion loader

Malware Config

Extracted

Family

bumblebee

Botnet

0905r

23.227.203.120:443

51.83.253.244:443

23.227.198.195:443

146.70.106.92:443

rc4.plain

Signatures

BumbleBee
BumbleBee is a loader malware written in C++.
loader bumblebee
Bumblebee family
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\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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	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

Blocklisted process makes network request 4 IoCs

flow	pid	Process
13	4676	rundll32.exe
20	4676	rundll32.exe
21	4676	rundll32.exe
35	4676	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-1-5-21-4050598569-1597076380-177084960-1000\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.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe
4676	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\oblot.dll,#1
1⤵
- 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:4676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4676-0-0x00007FFF07FAD000-0x00007FFF07FAE000-memory.dmp

Filesize
4KB

Download
memory/4676-1-0x000001E1ADAC0000-0x000001E1ADB89000-memory.dmp

Filesize
804KB

Download
memory/4676-2-0x000001E1ADAC0000-0x000001E1ADB89000-memory.dmp

Filesize
804KB

Download
memory/4676-5-0x00007FFF07F10000-0x00007FFF08105000-memory.dmp

Filesize
2.0MB

Download
memory/4676-4-0x00007FFF07F10000-0x00007FFF08105000-memory.dmp

Filesize
2.0MB

Download
memory/4676-3-0x00007FFF07F10000-0x00007FFF08105000-memory.dmp

Filesize
2.0MB

Download
memory/4676-7-0x00007FFF07F10000-0x00007FFF08105000-memory.dmp

Filesize
2.0MB

Download
memory/4676-8-0x00007FFF07F10000-0x00007FFF08105000-memory.dmp

Filesize
2.0MB

Download
memory/4676-6-0x00007FFF07F10000-0x00007FFF08105000-memory.dmp

Filesize
2.0MB

Download
memory/4676-9-0x000001E1ADAC0000-0x000001E1ADB89000-memory.dmp

Filesize
804KB

Download
memory/4676-10-0x000001E1ADAC0000-0x000001E1ADB89000-memory.dmp

Filesize
804KB

Download
memory/4676-11-0x00007FFF07FAD000-0x00007FFF07FAE000-memory.dmp

Filesize
4KB

Download
memory/4676-12-0x00007FFF07F10000-0x00007FFF08105000-memory.dmp

Filesize
2.0MB

Download
memory/4676-13-0x000001E1ADAC0000-0x000001E1ADB89000-memory.dmp

Filesize
804KB

Download
memory/4676-14-0x000001E1ADAC0000-0x000001E1ADB89000-memory.dmp

Filesize
804KB

Download