bumblebee | 12df68306288f11609ff1b5cac904fcaeab3f5561bcbf0f09c2bf439c6daeadc

Analysis

max time kernel
145s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
17/11/2022, 02:40

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General

Target

required documents.lnk
Size

995B
MD5

32718d69a0919473c89e529b04a7cd38
SHA1

d0c4c19cf77676d2827e9b9596796583d95dce37
SHA256

d3c9dc14d8396686cb3c12b1a483ca30943d731f733614fda85e1039bff611c5
SHA512

b1119c69fb1c1205250a10ab4893072b4ed45f38f5b0af9fdfa8a6c442f738571cd09b5767345ce47414681475bd9e57fc1526185493c9c30cb8311c96e2c4ba

Score

10^/10

bumblebee 15repl trojan

Malware Config

Extracted

Family

bumblebee

Botnet

15repl

23.108.57.200:443

103.144.139.158:443

23.106.160.52:443

rc4.plain

Signatures

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

Blocklisted process makes network request 7 IoCs

flow	pid	Process
29	2976	rundll32.exe
35	2976	rundll32.exe
38	2976	rundll32.exe
39	2976	rundll32.exe
41	2976	rundll32.exe
42	2976	rundll32.exe
43	2976	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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	cmd.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2976	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 4960 wrote to memory of 2100	4960	cmd.exe	82
PID 4960 wrote to memory of 2100	4960	cmd.exe	82
PID 2100 wrote to memory of 2976	2100	cmd.exe	83
PID 2100 wrote to memory of 2976	2100	cmd.exe	83

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\required documents.lnk"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c wabPTLAqdTmbJu.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2100
- - C:\Windows\system32\rundll32.exe
    rundll32 TdndchBWGClEyG.dll,appMainRun
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of NtCreateThreadExHideFromDebugger
    PID:2976

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

Replay Monitor

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Downloads

memory/2976-137-0x000002B8C3280000-0x000002B8C32F8000-memory.dmp

Filesize
480KB

Download
memory/2976-138-0x000002B8C3440000-0x000002B8C3589000-memory.dmp

Filesize
1.3MB

Download
memory/2976-139-0x000002B8C3280000-0x000002B8C32F8000-memory.dmp

Filesize
480KB

Download