bumblebee | 7ec8b6ce6f1381c436d7d93153dd47c5ccf92c90792be0c2a07c119e7a7d087e

Analysis

max time kernel
91s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
27/06/2022, 19:06

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General

Target

73a31d3ce275e2ac8acfe570a47710ed119e92e6b1860647030d65863145138a.dll
Size

1.4MB
MD5

5815bcacea7fda37e5e36a2b7c14be34
SHA1

b85a94538708a3cd2e3cd04d5b7c3ba1b18e1f71
SHA256

73a31d3ce275e2ac8acfe570a47710ed119e92e6b1860647030d65863145138a
SHA512

06b89d7673e39e2f7f63dd3b3706a9093227da581ce6db4a4da0d53650656952e0ff2387917c83f51df1f4921d5c53193fc4f0ae8d411de95893917cf9f0dab6

Score

10^/10

bumblebee 276a evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

276a

100.65.168.129:171

207.177.53.164:325

32.87.78.10:384

117.162.18.77:404

116.176.236.58:151

123.2.128.107:267

169.146.162.63:373

55.115.177.92:239

224.248.147.154:499

88.7.179.62:135

187.218.226.58:319

146.70.106.52:443

8.34.35.232:389

98.116.138.87:321

255.161.114.204:370

159.90.121.44:362

150.226.60.234:160

161.254.115.117:308

211.66.121.128:361

43.10.228.15:400

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\VBoxGuest	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	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-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Wine	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe
4552	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\73a31d3ce275e2ac8acfe570a47710ed119e92e6b1860647030d65863145138a.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 behavior: EnumeratesProcesses
PID:4552

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/4552-131-0x00000000025F0000-0x0000000002706000-memory.dmp

Filesize
1.1MB

Download
memory/4552-130-0x00000000025F0000-0x0000000002706000-memory.dmp

Filesize
1.1MB

Download
memory/4552-132-0x00000000025F0000-0x0000000002706000-memory.dmp

Filesize
1.1MB

Download
memory/4552-133-0x00007FF8434A0000-0x00007FF8434B0000-memory.dmp

Filesize
64KB

Download