bumblebee | edeab0df9cab4c8bc33ffd3ef54c0576b39f6016655cc778334f4f6b8945977e

Analysis

max time kernel
143s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03-11-2022 22:37

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General

Target

documents.lnk
Size

995B
MD5

d427e019e49028f4062aaabac1d861aa
SHA1

0eb483a71363383046df31ef34ad0adba2e2f92e
SHA256

82be83916929f212ea1c6b41fa731a767140cec9ba3e0becf652c9185092ded5
SHA512

68a0a7419d2fde01d4654c8703301385e0284c56303cde86234d7ba3d38a114b96c371924ee484c1b2e039042a1cecf4558e88bc8ac65662d66ecfc30fb4b75b

Score

10^/10

bumblebee 0311 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

0311

64.44.102.224:443

146.70.161.59:443

192.236.194.104:443

rc4.plain

Signatures

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

Blocklisted process makes network request 6 IoCs

flow	pid	Process
30	2548	rundll32.exe
50	2548	rundll32.exe
59	2548	rundll32.exe
63	2548	rundll32.exe
73	2548	rundll32.exe
104	2548	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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	cmd.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2548	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 use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 3080	4656	cmd.exe	82
PID 4656 wrote to memory of 3080	4656	cmd.exe	82
PID 3080 wrote to memory of 2548	3080	cmd.exe	83
PID 3080 wrote to memory of 2548	3080	cmd.exe	83

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\documents.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c swBdvsXKmEsXgd.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3080
- - C:\Windows\system32\rundll32.exe
    rundll32 OyNrEOXqQnrBVp.dll,BasicLoad
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of NtCreateThreadExHideFromDebugger
    PID:2548

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/2548-134-0x0000015D78670000-0x0000015D787B9000-memory.dmp

Filesize
1.3MB

Download
memory/2548-135-0x0000015D784B0000-0x0000015D78526000-memory.dmp

Filesize
472KB

Download