bumblebee | b90f420b5e66c7f9c24c75bc0553d250bb0d79df2be0b0738625cb7159d86fa7

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2022 20:26

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General

Target

week.dll
Size

925KB
MD5

8c99216011886a809be0b08f5128b91c
SHA1

a6c2eb84abdd08b894b6f4daa64e1cf367481193
SHA256

b90f420b5e66c7f9c24c75bc0553d250bb0d79df2be0b0738625cb7159d86fa7
SHA512

c9a4acf7b1cda0d2617c69bb5c8cbd28b530f856d271e2dc7c08bd75d60dedd8393e23901e63b4c23de4833be4997ddc9b245fb90231922d14e2a38e03b5635c
SSDEEP

24576:i+meq+lHCu0cja71hbkGeVdf36dPsxg/MP:vmeq+whtkFNg/k

Score

10^/10

bumblebee 0112 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

0112

172.86.123.150:443

91.245.253.76:443

23.106.223.1:443

rc4.plain

Signatures

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

Blocklisted process makes network request 7 IoCs

flow	pid	Process
2	1544	rundll32.exe
3	1544	rundll32.exe
28	1544	rundll32.exe
31	1544	rundll32.exe
53	1544	rundll32.exe
69	1544	rundll32.exe
72	1544	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{78A957CE-2CA0-4BE3-B1D0-0C61CC558481}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{8307354D-447E-4C02-BDC9-5ECEC07B8C3A}.catalogItem	svchost.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1544	rundll32.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

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\week.dll,#1
1⤵
- Blocklisted process makes network request
- Suspicious use of NtCreateThreadExHideFromDebugger
PID:1544

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:5024

Network

MITRE ATT&CK Enterprise v6

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/1544-132-0x00000245D6630000-0x00000245D6779000-memory.dmp

Filesize
1.3MB

Download
memory/1544-133-0x00000245D4AD0000-0x00000245D4B45000-memory.dmp

Filesize
468KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads