bumblebee | df60787a0c3b400b1e61a30dc7c998131594f512e9fc43dfd6f18097ccfc55a9

General

Target

required information.lnk
Size

1KB
MD5

58fb2aa4cdc631b102abd92cad34f054
SHA1

2df65dd90d13d13fe3a4070c85347e8eda82c935
SHA256

3b6b4238e4557235e44df73530bf6577df2897ba625f7f2879d102ff08086819
SHA512

79a364cd0b900fd7a816c57ffe9ad317ad16e0aa7c7f067ebe9f114dd3a2682cbce41cb66bf1d8a1de2dea303ef38c1f379925e5beca113f7ae8722f72e9fcef

Score

10^/10

bumblebee 1209 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1209

C2

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\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\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
584	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
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe
584	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 980 wrote to memory of 1764	980	cmd.exe	29
PID 980 wrote to memory of 1764	980	cmd.exe	29
PID 980 wrote to memory of 1764	980	cmd.exe	29
PID 1764 wrote to memory of 584	1764	cmd.exe	30
PID 1764 wrote to memory of 584	1764	cmd.exe	30
PID 1764 wrote to memory of 584	1764	cmd.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\required information.lnk"
1⤵
- Suspicious use of WriteProcessMemory
PID:980
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c exit.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1764
- - C:\Windows\system32\rundll32.exe
    rundll32 bhaks.dll,vcsfile
    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:584

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

4

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

4

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/584-93-0x0000000001E40000-0x0000000001FA0000-memory.dmp

Filesize
1.4MB

Download
memory/980-54-0x000007FEFB931000-0x000007FEFB933000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads