bumblebee | d1d9d5c8ac57cabcd8c6e92cdff2f5e04913d224fd3a153a3b1234b1ba94745d

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
31-10-2022 19:01

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General

Target

required documents.lnk
Size

995B
MD5

8c234f946e3b4f57904c9b9dc2361fa7
SHA1

8ab79dfa9fb1d8f9000ba070850187d88fe097dc
SHA256

43bd0f3809340f3b58d734690305c293e0805781798d0e56552642d96a31c780
SHA512

63d73a999011659642e54c4841c1a396a5357e1163bb259aed5c1cb10c0878374fd02edd3db6b14d934aa1041fccfd7216966fcf9e926a04624edcf3d7e3071d

Score

10^/10

bumblebee 2710vm trojan

Malware Config

Extracted

Family

bumblebee

Botnet

2710vm

23.106.160.141:443

198.98.56.242:443

104.244.77.61:443

rc4.plain

Signatures

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

Blocklisted process makes network request 6 IoCs

flow	pid	Process
28	4276	rundll32.exe
36	4276	rundll32.exe
41	4276	rundll32.exe
43	4276	rundll32.exe
44	4276	rundll32.exe
46	4276	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
4276	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 2804 wrote to memory of 1636	2804	cmd.exe	82
PID 2804 wrote to memory of 1636	2804	cmd.exe	82
PID 1636 wrote to memory of 4276	1636	cmd.exe	83
PID 1636 wrote to memory of 4276	1636	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:2804
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c YBnruijYBbnbMK.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1636
- - C:\Windows\system32\rundll32.exe
    rundll32 vEzFDEkEeKmEBW.dll,AppLoad
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of NtCreateThreadExHideFromDebugger
    PID:4276

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/4276-134-0x0000022DAD210000-0x0000022DAD359000-memory.dmp

Filesize
1.3MB

Download
memory/4276-135-0x0000022DAD0C0000-0x0000022DAD205000-memory.dmp

Filesize
1.3MB

Download