bumblebee | 683abb021663dcd0b79991ae0838a3ad92361127093860da39f09bc255fda3f1

General

Target

upload.dll
Size

2.0MB
MD5

d7bb608a3b370fa7f457b4e89bbdb594
SHA1

0c82220151415e6cbce25d2615d29f4352e0ecd5
SHA256

f0fdc0b64b747f348a87a382ff5dfe016107f95ab5953318cc8d9548a983efd1
SHA512

10c16d38e7fc6b8ccf9e023f50ae3600790d225ad5b170f4f76eb0d3c47d0cd3e01047fe89f7788cd482277ad91477bc369ab7e2a93acc7005f7cc9e7a8f2dd0

Score

10^/10

bumblebee 707a evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

707a

C2

172.240.175.194:183

171.85.135.192:358

223.7.203.157:407

45.153.242.183:443

211.68.220.197:102

174.119.130.65:369

202.41.22.30:314

58.10.113.168:308

12.33.69.160:285

205.185.123.137:443

112.188.178.13:332

168.205.228.104:480

83.218.135.147:151

228.175.209.140:269

240.114.36.128:411

8.109.227.172:304

142.11.245.185:443

214.233.117.120:167

198.135.200.7:254

73.74.56.146:272

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\VBoxSF	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService	regsvr32.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__	regsvr32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__	regsvr32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	regsvr32.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	regsvr32.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	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	regsvr32.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-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Wine	regsvr32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1640	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\upload.dll
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 use of NtCreateThreadExHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:1640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

4

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

1

T1082

Virtualization/Sandbox Evasion

4

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1640-54-0x000007FEFBF11000-0x000007FEFBF13000-memory.dmp

Filesize
8KB

Download
memory/1640-55-0x0000000002650000-0x0000000002766000-memory.dmp

Filesize
1.1MB

Download
memory/1640-57-0x0000000002650000-0x0000000002766000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads