bumblebee | fed9bc8df9141f8f8f7a9203bc26b5b22123c154702fcd625379f2f7ecd31cb2

Analysis

max time kernel
30s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
25-03-2023 12:48

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General

Target

information.dll
Size

2.0MB
MD5

c9216484a6371b055705ec5f4098ab01
SHA1

a13903e50408e11996159fba5f7deab1e73e8f08
SHA256

fed9bc8df9141f8f8f7a9203bc26b5b22123c154702fcd625379f2f7ecd31cb2
SHA512

64485bb8e1845a29f9d60343a0bd6fd8de4220aa83f3cd19eed47737642b79db2753106192798d495202e74016f2e845d161c1362ad09b01104f9cfb8c939359
SSDEEP

49152:G+MhMvcxBbQLsks2EWZs09Xl3ZF9EK99sq+Zy1RDZ5ko4Ebv5g7H11zLG0ZriPkb:G+Yu/ZTjLHS3bmdeQbzWIu78ph13l3bS

Score

10^/10

bumblebee 146l evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

146l

141.98.168.70:443

103.175.16.107:443

146.70.124.77:443

154.56.0.100:443

194.135.33.16:443

185.62.58.209:443

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\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

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-1-5-21-1563773381-2037468142-1146002597-1000\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 41 IoCs

pid	Process
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe
1088	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\information.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
- Checks for VirtualBox DLLs, possible anti-VM trick
- Suspicious behavior: EnumeratesProcesses
PID:1088

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/1088-54-0x0000000002510000-0x0000000002627000-memory.dmp

Filesize
1.1MB

Download
memory/1088-55-0x0000000002510000-0x0000000002627000-memory.dmp

Filesize
1.1MB

Download
memory/1088-56-0x000000007FFF0000-0x000000007FFF1000-memory.dmp

Filesize
4KB

Download
memory/1088-57-0x0000000002510000-0x0000000002627000-memory.dmp

Filesize
1.1MB

Download