bumblebee | e714557aa665651045795c747d9b0faec60863c27edd579c7d6ed75bb33b94f1

Analysis

max time kernel
144s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2023 01:56

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General

Target

ff519023357a9cc5bb731d798de2f6b6.dll
Size

1.1MB
MD5

ff519023357a9cc5bb731d798de2f6b6
SHA1

c14545a2d261647012a825e77af3a52fbc2cbc4d
SHA256

e714557aa665651045795c747d9b0faec60863c27edd579c7d6ed75bb33b94f1
SHA512

daddc936416b6ff42bdc47ea50b9b7e0acdaa202f46f75e8a14422c5254eb9a23918bd42ea6131503692045cbedf66373429c9c3cd07286c649f2a04801df1c0
SSDEEP

24576:Zf4/h/FsE6r+XMKFo6hFWHWhw7a9LfMtJ3JCI:J4/hNsEiKK

Score

10^/10

bumblebee js1 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

js1

rc4.plain

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan bumblebee

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{EFFC5A7F-5C8D-447A-9371-72C2BFBFB39F}.catalogItem	svchost.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1464	regsvr32.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ff519023357a9cc5bb731d798de2f6b6.dll
1⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
PID:1464

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1464-1-0x0000000002910000-0x0000000002989000-memory.dmp

Filesize
484KB

Download
memory/1464-3-0x0000000002AB0000-0x0000000002BBA000-memory.dmp

Filesize
1.0MB

Download
memory/1464-4-0x00007FFC0D610000-0x00007FFC0D805000-memory.dmp

Filesize
2.0MB

Download
memory/1464-2-0x0000000002AB0000-0x0000000002BBA000-memory.dmp

Filesize
1.0MB

Download
memory/1464-6-0x0000000002AB0000-0x0000000002BBA000-memory.dmp

Filesize
1.0MB

Download
memory/1464-7-0x00007FFC0D610000-0x00007FFC0D805000-memory.dmp

Filesize
2.0MB

Download
memory/1464-5-0x00007FFC0D610000-0x00007FFC0D805000-memory.dmp

Filesize
2.0MB

Download
memory/1464-8-0x00007FFC0D610000-0x00007FFC0D805000-memory.dmp

Filesize
2.0MB

Download
memory/1464-9-0x00007FFC0D610000-0x00007FFC0D805000-memory.dmp

Filesize
2.0MB

Download
memory/1464-10-0x00007FFC0D610000-0x00007FFC0D805000-memory.dmp

Filesize
2.0MB

Download
memory/1464-11-0x0000000002AB0000-0x0000000002BBA000-memory.dmp

Filesize
1.0MB

Download
memory/1464-18-0x0000000002910000-0x0000000002989000-memory.dmp

Filesize
484KB

Download
memory/1464-19-0x00007FFC0D610000-0x00007FFC0D805000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads