bumblebee | 60706250a0809275086da8fa70f1541b8a5da2c1e7fee09572add49c3a5ef89c

General

Target

docum.bat
Size

39B
MD5

9b2244d9b15b1186430e2feedf1a1cbc
SHA1

e42ce05798212df517d36cec81435ffb1877c3fd
SHA256

f17420ec26a57d29eefd782b046a8c7be41bc1da1d9bf08313e6fc83ccca333e
SHA512

d0cf589d6d31fa45fa7982e3d817920a4dbd06771f2051c0a3d4e4da92d43f4787e73d666351f473684d1db16e0c04909f1b52e87da1eabc87d6d76e5b24d387

Score

10^/10

bumblebee 6rr evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

6rr

C2

145.239.30.26:443

194.37.97.135:443

185.62.58.238:443

176.107.177.124:443

192.236.160.254:443

192.236.192.85:443

185.62.56.201:443

103.175.16.59:443

198.98.57.91:443

154.56.0.221:443

64.44.101.250:443

103.175.16.117:443

63.141.248.253:443

192.236.194.136:443

193.239.84.247:443

192.236.161.191:443

185.156.172.123:443

54.38.136.187:443

64.44.102.6:443

192.119.64.21:443

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

Processes:

rundll32.exe

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

Processes:

rundll32.exe

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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions rundll32.exe

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

Processes:

rundll32.exe

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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Wine rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

Processes:

rundll32.exe

pid	process
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe
1364	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 272 wrote to memory of 1364	272	cmd.exe	rundll32.exe
PID 272 wrote to memory of 1364	272	cmd.exe	rundll32.exe
PID 272 wrote to memory of 1364	272	cmd.exe	rundll32.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\docum.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:272
- C:\Windows\system32\rundll32.exe
  RunDll32 parelmo2.dll,nHqRHTKVae
  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:1364

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

1

T1082

Virtualization/Sandbox Evasion

4

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1364-54-0x0000000000000000-mapping.dmp

Download
memory/1364-55-0x0000000002420000-0x0000000002537000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads