bumblebee | 76e4742d9e7f4fd3a74a98c006dfdce23c2f9434e48809d62772acff169c3549

Analysis

max time kernel
43s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29-08-2022 17:03

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General

Target

timi4r.dll
Size

1.7MB
MD5

6b57fa501321b2ac4f67643f3efc389f
SHA1

a4654130534ad4644da52f758b35de784c01913d
SHA256

76e4742d9e7f4fd3a74a98c006dfdce23c2f9434e48809d62772acff169c3549
SHA512

ccbac2fe07f5490226cbd05314af4c93557aca8fd2ea943a1f75cdd6fa94aff94533ab0ef2ad00ca1be9cc4623e4b8025fe56fadf348d8bf8fe2a312b3e34ea6
SSDEEP

24576:FlfKjRXMDFHC/bemHc+X2eiE3WwDFecqDR9:F9+RUHCjem8+GeCwDFecqDR9

Score

10^/10

bumblebee 1406r evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1406r

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\FADT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\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-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe
1652	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\timi4r.dll,#1
1⤵
- 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:1652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1652-54-0x00000000024E0000-0x00000000025F7000-memory.dmp

Filesize
1.1MB

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