bumblebee | 5700ad38086a5d6e833ec17c8c98b6f8782900e5d6fcc9a2f8a72855ed44d622

Analysis

max time kernel
91s
max time network
110s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
17/06/2022, 19:26

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General

Target

18aed3582da2419ab339bff7d1e84b1eac88d5c9bfaf7320daafcfbb6f6798b3.dll
Size

1.8MB
MD5

ce8aa596ab8c1d075439a9ee29a438c6
SHA1

415ad86787a40abb95fb67e604aba8a075a41ead
SHA256

18aed3582da2419ab339bff7d1e84b1eac88d5c9bfaf7320daafcfbb6f6798b3
SHA512

a5c7d3b9d127bc1ab22a8a8596a6853ae721fb3286e0b3d5d6592d9be603f1ec31055b7598aad4c9e5ee8adb351a122f12605aa4d76a3842ace8f01645f7af1c

Score

10^/10

bumblebee 166a evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

166a

85.239.33.172:443

25.5.198.104:440

223.31.110.102:393

213.226.100.95:443

25.181.64.39:236

199.193.159.46:283

45.138.172.246:443

84.250.88.57:386

145.244.80.29:230

133.17.128.73:319

14.102.170.127:377

1.39.166.217:166

14.40.68.19:391

146.19.173.186:443

199.201.12.90:201

212.110.132.77:289

69.38.43.160:207

131.169.248.28:201

141.178.39.245:323

28.148.236.16:485

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-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Wine	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe
4240	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\18aed3582da2419ab339bff7d1e84b1eac88d5c9bfaf7320daafcfbb6f6798b3.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:4240

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/4240-130-0x0000000003360000-0x0000000003477000-memory.dmp

Filesize
1.1MB

Download
memory/4240-131-0x0000000003360000-0x0000000003477000-memory.dmp

Filesize
1.1MB

Download
memory/4240-132-0x0000000003360000-0x0000000003477000-memory.dmp

Filesize
1.1MB

Download
memory/4240-133-0x00007FFE37520000-0x00007FFE37530000-memory.dmp

Filesize
64KB

Download