bumblebee | 8c3089133607bfd2a73d5f06ea60b7aca0989bedfd7a503e0beda16249a9e83d

Resubmissions

03-10-2022 18:11

221003-wstmjaacgm 10

26-09-2022 21:49

220926-1pkmnsdbdq 9

Analysis

max time kernel
41s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-10-2022 18:11

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General

Target

details.lnk
Size

995B
MD5

b5d21515040f492ecf2cdab2cecbee04
SHA1

6a288e044cefd4c83fdd07899445755a3e4cdfd4
SHA256

ae3360b50c116599a7cb2750c896e4223097e8c7224242d5844ebee0808c089f
SHA512

0bd2564b4c078685a7fa321d55655ee8c65a2c559bff231c0d17c80776e8e36d8b251aee85f1e3000e436e03266dab58954640058861a122d71d1d601efe999c

Score

10^/10

bumblebee 2609 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

2609

209.141.48.135:443

142.11.241.215:443

146.59.116.77:443

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\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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest	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\RSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\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\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	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-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Wine	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
900	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe
900	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 516	1644	cmd.exe	29
PID 1644 wrote to memory of 516	1644	cmd.exe	29
PID 1644 wrote to memory of 516	1644	cmd.exe	29
PID 516 wrote to memory of 900	516	cmd.exe	30
PID 516 wrote to memory of 900	516	cmd.exe	30
PID 516 wrote to memory of 900	516	cmd.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\details.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c PnrirLoslBOSWR.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:516
- - C:\Windows\system32\rundll32.exe
    rundll32 lqDwAhoXOlNwLd.dll,TlvRun
    3⤵
    - 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:900

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/900-93-0x0000000001F00000-0x0000000002053000-memory.dmp

Filesize
1.3MB

Download
memory/1644-54-0x000007FEFB881000-0x000007FEFB883000-memory.dmp

Filesize
8KB

Download