bumblebee | 38621b07458c3e8494115cd3cd6673ffaca372e87745f08d70a4838fcac33dbf

Analysis

max time kernel
91s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
19/10/2022, 20:39 UTC

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General

Target

DETAILS.lnk
Size

995B
MD5

cadc4156a4d9e1c398f6eb54957a8c9b
SHA1

2fe2e1366bfcb30249188043d14f6cb749292989
SHA256

7e4816c16bd3766ccb4dba5e4dff725f3936233f8aff9cddb904347f17118cd7
SHA512

88a8c007d791c7dccf500762a587dd4438da4c53253cb43588e7ac216cd77ba97d5f6d59559a671ebcc120b8f2ae2befc6e03d5f3b8024c8d529f5805058db4e

Score

10^/10

bumblebee 1710 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

1710

198.98.59.245:443

146.19.173.148:443

45.61.185.227:443

rc4.plain

1
eCUmnQerTx

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	cmd.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Wine	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4144	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 64 IoCs

pid	Process
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe
4144	rundll32.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4372 wrote to memory of 1448	4372	cmd.exe	84
PID 4372 wrote to memory of 1448	4372	cmd.exe	84
PID 1448 wrote to memory of 4144	1448	cmd.exe	85
PID 1448 wrote to memory of 4144	1448	cmd.exe	85

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\DETAILS.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4372
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c lZrFnyxCjMmiEL.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1448
- - C:\Windows\system32\rundll32.exe
    rundll32.exe HcDTvUxhMvlLtX.dll,FileUpload
    3⤵
    - 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 use of NtCreateThreadExHideFromDebugger
    - Suspicious behavior: EnumeratesProcesses
    PID:4144

Network

No results found

8.253.208.113:80

322 B
7
2.18.109.224:443

322 B
7
20.42.73.25:443

322 B
7
87.248.202.1:80

322 B
7
87.248.202.1:80

322 B
7
93.184.221.240:80

322 B
7

No results found

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/4144-134-0x000001A27D7F0000-0x000001A27D943000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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