bumblebee | 281a1cfaebf968012e9596721d14b1bd6429744617e73f96558cb68bcc0db8f8

Resubmissions

12-05-2022 21:09

220512-zzeczaabg4 9

10-05-2022 12:16

220510-pfl9csbefm 10

09-05-2022 23:26

220509-3e4nxaedh7 10

Analysis

max time kernel
40s
max time network
43s
platform
windows7_x64
resource
win7-20220414-en
submitted
10-05-2022 12:16

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General

Target

oblot.dll
Size

1.3MB
MD5

38ea4397f1c9dfe79e9accaebe7487ec
SHA1

24614b49e47bbdc30263cc86cea8aceb2781f1ed
SHA256

281a1cfaebf968012e9596721d14b1bd6429744617e73f96558cb68bcc0db8f8
SHA512

3b8d8deb404a52cb43306c8b3275f61efd8092202cf5ac5d86c342664b1673080abb3689f77b5bcc94b88ca10f238eb2dba67161619588e443ca6e04e261399b

Score

10^/10

bumblebee evasion trojan

Malware Config

Extracted

Family

bumblebee

Attributes

group_id
9Ydun9zWUm

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan bumblebee
Enumerates VirtualBox registry keys 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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-1-5-21-790309383-526510583-3802439154-1000\SOFTWARE\Wine	rundll32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe
1640	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\oblot.dll,#1
1⤵
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious behavior: EnumeratesProcesses
PID:1640

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/1640-54-0x0000000001DA0000-0x0000000001E69000-memory.dmp

Filesize
804KB

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