bumblebee | e1dbce8a89b5fea0f3cf6da9560fd573dfe9c93c5d6d8d2fef8902a3589cdf15

Analysis

max time kernel
143s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
14-09-2023 08:51

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a6ac1a8bb63362ed7515f2ca02fb52be.dll
Size

1.1MB
MD5

a6ac1a8bb63362ed7515f2ca02fb52be
SHA1

8781347d2e723f823d5b996bc22389b14a4a72c8
SHA256

e1dbce8a89b5fea0f3cf6da9560fd573dfe9c93c5d6d8d2fef8902a3589cdf15
SHA512

6f01f0a630afff0dd71c5e457c8dbdb3a7743fb6337740384e034dad0d6b3f002992f2df5c953f223f8b2589098c43640b705a25482ed1c939a61b6dd783392d
SSDEEP

24576:K40kaG+iDe5cMQW7v7+KIUC/ofj1fpLgN:K40kd+35cMv

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\{19843BFB-B491-4721-8BA9-CB88D55B767E}.catalogItem	svchost.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2432	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\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:2280

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\a6ac1a8bb63362ed7515f2ca02fb52be.dll
1⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
PID:2432

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2432-5-0x0000000002780000-0x00000000027F9000-memory.dmp

Filesize
484KB

Download
memory/2432-7-0x00007FFC5FD30000-0x00007FFC5FF25000-memory.dmp

Filesize
2.0MB

Download
memory/2432-6-0x0000000002950000-0x0000000002A5A000-memory.dmp

Filesize
1.0MB

Download
memory/2432-9-0x0000000002950000-0x0000000002A5A000-memory.dmp

Filesize
1.0MB

Download
memory/2432-11-0x0000000002950000-0x0000000002A5A000-memory.dmp

Filesize
1.0MB

Download
memory/2432-10-0x00007FFC5FD30000-0x00007FFC5FF25000-memory.dmp

Filesize
2.0MB

Download
memory/2432-8-0x00007FFC5FD30000-0x00007FFC5FF25000-memory.dmp

Filesize
2.0MB

Download
memory/2432-14-0x0000000002950000-0x0000000002A5A000-memory.dmp

Filesize
1.0MB

Download
memory/2432-15-0x0000000002780000-0x00000000027F9000-memory.dmp

Filesize
484KB

Download
memory/2432-16-0x00007FFC5FD30000-0x00007FFC5FF25000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads