bumblebee | 37104c67794383d81a4bacb301c4e3b4e04d12bcb914494fb8f7c5a2e0ff9994

General

Target

toso3l/documents.lnk
Size

2KB
MD5

fd76759f202a3f3651d445f022a8f308
SHA1

47daf80efb7af421f01f7af22ed367f52695645d
SHA256

7ea93d3194137b5e8e11609733b6d1dbefda22cc1e129e25a06e8623f2bbc3e3
SHA512

f56b94e835d02d2fdb20f35022599584de23631cb7b5eeab52b68522404d5e7f82c9a8964d866b920314c0546ddaf4bd563a3b48e9cd5596e0777c656f75f3c2

Score

10^/10

bumblebee 1406r evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1406r

C2

39.57.152.217:440

69.161.201.181:382

244.6.154.71:111

193.233.203.156:443

221.106.84.123:307

194.135.33.148:443

111.99.39.11:387

223.243.46.133:147

48.165.175.199:316

78.89.31.86:229

157.17.142.85:406

90.81.8.16:370

21.29.238.98:209

154.56.0.252:443

103.175.16.108:443

188.57.4.52:357

15.209.19.148:466

160.70.24.228:486

33.145.184.132:240

235.126.132.170:106

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-1-5-21-2277218442-1199762539-2004043321-1000\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
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe
1624	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 1624	1368	cmd.exe	29
PID 1368 wrote to memory of 1624	1368	cmd.exe	29
PID 1368 wrote to memory of 1624	1368	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\toso3l\documents.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" toso3l.dll,LyirJCyvGh
  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:1624

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/1368-54-0x000007FEFBD41000-0x000007FEFBD43000-memory.dmp

Filesize
8KB

Download
memory/1624-92-0x0000000002420000-0x0000000002537000-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