bumblebee | a6385bc42486f67358ac150f680283cffb300c6fe06a77f8b41fc66ef1e91709

General

Target

run.bat
Size

54B
MD5

db80bc91651a4233aacaea623b8be383
SHA1

f71bd2815820c382eafca3c580146d3b16c508f7
SHA256

136c0da55ba3631948b910926bc0c749483ea05c5321b0fcb744902d9a71b893
SHA512

3deeef25a4c4054dbb5e21db1e0c955ba2dfe9217e05cd3758b489dbd67ae78d45602d57989b6586d5eb03ce88e71098f9c609c96dbf3ad2888a1807782edfe4

Score

10^/10

bumblebee 9rr evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

9rr

C2

103.175.16.107:443

194.135.33.149:443

154.56.0.241:443

23.254.201.97:443

45.147.229.101:443

185.62.58.169:443

192.236.249.68:443

193.239.84.254:443

37.120.198.248:443

146.19.173.139:443

46.21.153.145:443

149.255.35.134:443

45.147.229.50:443

212.114.52.46:443

103.175.16.122:443

146.19.253.49:443

68.233.238.105:443

64.44.135.250:443

103.175.16.121:443

64.44.102.6:443

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\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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	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\SystemBiosDate	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	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-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe
1788	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 1788	1700	cmd.exe	28
PID 1700 wrote to memory of 1788	1700	cmd.exe	28
PID 1700 wrote to memory of 1788	1700	cmd.exe	28

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\run.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\System32\rundll32.exe
  C:\Windows\System32\rundll32.exe da4nos.dll,ajwGwRKhLi
  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 behavior: EnumeratesProcesses
  PID:1788