bumblebee | df60787a0c3b400b1e61a30dc7c998131594f512e9fc43dfd6f18097ccfc55a9

Analysis

max time kernel
43s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
16-09-2022 20:11

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General

Target

exit.bat
Size

926B
MD5

ac5ac9522b475f3f9ffe4ff760d214b9
SHA1

a684c4618a78590ff572f4009e78829052f63dd8
SHA256

67b38543ed6ba39a442d1563cbae37b6c6cb27679ddf62804a720b4fd8af6873
SHA512

1001cf2e6780c913398825a7ee4e42ac983203fc9e6e100528f2996411028bc9d6a5396e71229a1df0755c22610d6d66b0713cf21b92b04ec20715bcc08a9648

Score

10^/10

bumblebee 1209 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1209

103.144.139.138:443

154.56.0.119:443

158.20.4.234:443

205.185.123.115:443

146.70.143.140:443

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\VBoxSF	rundll32.exe
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

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\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
1232	rundll32.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe
1232	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 1232	1652	cmd.exe	29
PID 1652 wrote to memory of 1232	1652	cmd.exe	29
PID 1652 wrote to memory of 1232	1652	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\exit.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Windows\system32\rundll32.exe
  rundll32 bhaks.dll,vcsfile
  2⤵
  - 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:1232

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/1232-55-0x0000000001DF0000-0x0000000001F50000-memory.dmp

Filesize
1.4MB

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