bumblebee | edeab0df9cab4c8bc33ffd3ef54c0576b39f6016655cc778334f4f6b8945977e

Analysis

max time kernel
142s
max time network
149s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-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
1	1824	rundll32.exe
3	1824	rundll32.exe
4	1824	rundll32.exe
5	1824	rundll32.exe
8	1824	rundll32.exe
9	1824	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1824	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 6 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 1764	1448	cmd.exe	28
PID 1448 wrote to memory of 1764	1448	cmd.exe	28
PID 1448 wrote to memory of 1764	1448	cmd.exe	28
PID 1764 wrote to memory of 1824	1764	cmd.exe	29
PID 1764 wrote to memory of 1824	1764	cmd.exe	29
PID 1764 wrote to memory of 1824	1764	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\documents.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c swBdvsXKmEsXgd.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1764
- - C:\Windows\system32\rundll32.exe
    rundll32 OyNrEOXqQnrBVp.dll,BasicLoad
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of NtCreateThreadExHideFromDebugger
    PID:1824

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1448-54-0x000007FEFB9E1000-0x000007FEFB9E3000-memory.dmp

Filesize
8KB

Download
memory/1824-93-0x0000000001F50000-0x0000000002099000-memory.dmp

Filesize
1.3MB

Download
memory/1824-94-0x0000000001CC0000-0x0000000001D36000-memory.dmp

Filesize
472KB

Download