bumblebee | 38621b07458c3e8494115cd3cd6673ffaca372e87745f08d70a4838fcac33dbf

Analysis

max time kernel
42s
max time network
47s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19-10-2022 20:39

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

lZrFnyxCjMmiEL.bat
Size

1KB
MD5

51e6d846c536f09bb850653ae80658ba
SHA1

00d1f6aeb5eb543ea5dbcbabd1ecf150d835e252
SHA256

88da40b5d0a5d9b1adeda161d460ea7598211ab52bc2eac03a098eb665994a16
SHA512

1f1043cd472355f5532eb18678b3ebfd1b805910c8b3f9faa6430a4d84434eeab6d5f561cfa1dc568371e82d7d6fdb49d3e98865dfc858c318d038ca9fcaafbc

Score

10^/10

bumblebee 1710 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1710

198.98.59.245:443

146.19.173.148:443

45.61.185.227:443

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\FADT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\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

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 3 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 900	1692	cmd.exe	29
PID 1692 wrote to memory of 900	1692	cmd.exe	29
PID 1692 wrote to memory of 900	1692	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\lZrFnyxCjMmiEL.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\system32\rundll32.exe
  rundll32.exe HcDTvUxhMvlLtX.dll,FileUpload
  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: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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/900-55-0x0000000001E20000-0x0000000001F73000-memory.dmp

Filesize
1.3MB

Download