bumblebee | 4b94ef5a7651773545d376bfb6e032549f91286ef99b3c77beda371c11d54b31

General

Target

documents.lnk
Size

2KB
MD5

0c61c063804dbbe46b16acbfb28d8771
SHA1

1231e3cddeedc09bb243b9b4536f3029efc4c8b7
SHA256

7b9a00cbd523a9585abb072f782b0b1447a905a3d63232627591bdf363f776c4
SHA512

6c2a29ba06bda9b778e2590d45ba698bc7b195c014afd31ede17ce086786413b97d8c9c7f29b38e07022571e0a397d44cad01550fb5a673014246c21a350e35b

Score

10^/10

bumblebee 156r evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

156r

C2

249.241.29.24:181

124.243.81.221:274

142.11.216.143:443

190.123.237.229:261

208.84.180.22:146

103.175.16.106:443

18.8.71.243:176

37.64.220.2:332

100.93.33.185:487

182.62.4.186:282

239.100.121.57:329

228.78.147.191:253

212.234.34.219:148

138.65.77.29:391

55.14.133.44:292

221.238.146.116:272

91.167.137.83:421

66.23.70.38:168

183.37.64.159:220

241.112.226.151:197

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\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-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Wine	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 41 IoCs

pid	Process
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe
672	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 672	1992	cmd.exe	28
PID 1992 wrote to memory of 672	1992	cmd.exe	28
PID 1992 wrote to memory of 672	1992	cmd.exe	28

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\documents.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" glin3r.dll,REZNavuTXR
  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:672

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/672-92-0x00000000024E0000-0x00000000025F7000-memory.dmp

Filesize
1.1MB

Download
memory/1992-54-0x000007FEFBFA1000-0x000007FEFBFA3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads