bumblebee | b29b0f2a27ccbb9f12363a3dde1f2d2373fdc782232f4804f0abffbb8daf9d25

Analysis

max time kernel
62s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-01-2023 15:24

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General

Target

bc5d785487fd7a84d5a7187aabd2e6d6.dll
Size

1.8MB
MD5

bc5d785487fd7a84d5a7187aabd2e6d6
SHA1

da67c853cf34ce7cfbaf7619d2bd7d36d2cf82d0
SHA256

b29b0f2a27ccbb9f12363a3dde1f2d2373fdc782232f4804f0abffbb8daf9d25
SHA512

7e748dac9aa91bc7e0170d6e2f80c1fc34d3c4a5d60c7ded0dcf87d2348a2a39a391a8175f110dab7226700111ccf0feb686f9b20034388979749cbf1b34a1a7
SSDEEP

49152:yyGZT3ar6EpMHjvDg7QJXHoqwYh3ViDQ6yi:yNZTqrRn0YYh3ViDQ6y

Score

10^/10

bumblebee 306a evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

306a

104.168.164.153:443

193.27.14.242:443

146.70.53.183:443

51.68.146.200:443

146.70.78.21:443

185.62.56.12:443

146.19.253.15:443

160.20.147.191:443

79.110.52.236:443

37.72.174.23:443

64.44.135.230:443

103.175.16.108:443

146.70.106.83:443

185.62.56.224:443

103.175.16.106:443

154.56.0.223:443

103.175.16.38:443

104.168.204.123:443

103.144.139.18:443

51.68.147.233:443

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\VideoBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bc5d785487fd7a84d5a7187aabd2e6d6.dll,#1
1⤵
- 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 behavior: EnumeratesProcesses
PID:4912

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

Replay Monitor

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Downloads

memory/4912-132-0x0000011566800000-0x0000011566917000-memory.dmp

Filesize
1.1MB

Download
memory/4912-133-0x00007FF82E020000-0x00007FF82E030000-memory.dmp

Filesize
64KB

Download