bumblebee | a6a48f8c18172cd0acafce22a39fdc65a720aad346050a7ee1b20cd6a13bd3f8

Analysis

max time kernel
135s
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
02-11-2022 17:35

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General

Target

required documents.lnk
Size

995B
MD5

6b21b97785ef22f67e72c897115411ee
SHA1

3cc12b0994e0c25fe51d0e4596c9847ec4a2a19b
SHA256

b3bdf5e58460967d9837165ad1ab6bde950f55bd7ae40382d3352a054acd89c3
SHA512

53d20814fb3829c43e40027aa1d18273064b4272d3cddf5b52c80bf13281b90dd8e59653974d1101a292571da34e8dedde9f2f46cd37bc71df44e615681f5b0d

Score

10^/10

bumblebee 0211 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

0211

176.223.165.119:443

51.75.63.234:443

104.168.171.189:443

rc4.plain

Signatures

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

Blocklisted process makes network request 7 IoCs

flow	pid	Process
13	4876	rundll32.exe
37	4876	rundll32.exe
38	4876	rundll32.exe
39	4876	rundll32.exe
42	4876	rundll32.exe
43	4876	rundll32.exe
45	4876	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	cmd.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4876	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 388 wrote to memory of 4676	388	cmd.exe	81
PID 388 wrote to memory of 4676	388	cmd.exe	81
PID 4676 wrote to memory of 4876	4676	cmd.exe	82
PID 4676 wrote to memory of 4876	4676	cmd.exe	82

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:388
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c pBLiwECeuZiHFL.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4676
- - C:\Windows\system32\rundll32.exe
    rundll32 LDYwFaCKXIhkuX.dll,Qruncore
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of NtCreateThreadExHideFromDebugger
    PID:4876

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/4876-134-0x000001F3002C0000-0x000001F300409000-memory.dmp

Filesize
1.3MB

Download
memory/4876-135-0x000001F300100000-0x000001F300176000-memory.dmp

Filesize
472KB

Download