bumblebee | a4bf015a00dd0c7459f13af3ea194e7d9d3950eb359b614d2f5689e241fec55d

Analysis

max time kernel
146s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

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

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General

Target

66535813e58e078c4a56c502b6536725080aef5f17abf62f57348a574caccaf5.exe
Size

594KB
MD5

b397d94493a37c789647bc3d17fa6920
SHA1

bd7dabb5c87e9e80160f6da942bfd26849e8494a
SHA256

66535813e58e078c4a56c502b6536725080aef5f17abf62f57348a574caccaf5
SHA512

67428108465513a9d2b0f62c18a78e20e2b0204beeedd95a948b8587d8bc4d61371158197754fd61fdffb0648f54a9e884fd4f7a4e0629f30654da8ba0ed11b3
SSDEEP

12288:zGOWNipODV+gjelTCvc8AtzkvkBFJaC/p5lakvyKmUlZ2j:zGOZYVFjelWkBwv6bp1vcUe

Score

10^/10

bumblebee lnk1 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

lnk1

rc4.plain

Signatures

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

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{8950AF64-42EF-46E8-BD35-2A7C84399AB0}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat	svchost.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	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:\Users\Admin\AppData\Local\Temp\66535813e58e078c4a56c502b6536725080aef5f17abf62f57348a574caccaf5.exe
"C:\Users\Admin\AppData\Local\Temp\66535813e58e078c4a56c502b6536725080aef5f17abf62f57348a574caccaf5.exe"
1⤵
PID:3012

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:4936

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

C:\Users\Admin\AppData\Local\Temp\wsuA170.tmp

Filesize
14KB

MD5
c01eaa0bdcd7c30a42bbb35a9acbf574

SHA1
0aee3e1b873e41d040f1991819d0027b6cc68f54

SHA256
32297224427103aa1834dba276bf5d49cd5dd6bda0291422e47ad0d0706c6d40

SHA512
d26ff775ad39425933cd3df92209faa53ec5b701e65bfbcccc64ce8dd3e79f619a9bad7cc975a98a95f2006ae89e50551877fc315a3050e48d5ab89e0802e2b7

Download Submit
memory/3012-0-0x000001E86AA50000-0x000001E86AABD000-memory.dmp

Filesize
436KB

Download
memory/3012-1-0x000001E86AD20000-0x000001E86AE27000-memory.dmp

Filesize
1.0MB

Download
memory/3012-2-0x000001E86AD20000-0x000001E86AE27000-memory.dmp

Filesize
1.0MB

Download
memory/3012-4-0x000001E86AD20000-0x000001E86AE27000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads