bumblebee | 584d1a787374e437b050149ee9e1f891496db0d5e1f86bc08c1c3f003143bb80

Analysis

max time kernel
138s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04/11/2022, 21:01

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General

Target

details.lnk
Size

995B
MD5

318e9e89ec41466076292116a0e97880
SHA1

74a79d98c63ecb86c69bcd0346a346f1e4f85626
SHA256

ea1d322b8acea3e0d92846895391f96123f54fa1eb641b42a29ddd4b856b3065
SHA512

45151567ff4a7b810ebb6995c09038c06cc1dad08dc197a02ae2a705e46bcafeb3a080a706a39f5b272d3b88332c3524ebbc7c4bc7f1bb4e32a09c859e4aee18

Score

10^/10

bumblebee 0411 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

0411

192.119.120.146:443

54.37.131.10:443

146.70.139.252:443

rc4.plain

Signatures

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

Blocklisted process makes network request 6 IoCs

flow	pid	Process
62	4248	rundll32.exe
71	4248	rundll32.exe
78	4248	rundll32.exe
82	4248	rundll32.exe
84	4248	rundll32.exe
89	4248	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
4248	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 4364 wrote to memory of 4332	4364	cmd.exe	78
PID 4364 wrote to memory of 4332	4364	cmd.exe	78
PID 4332 wrote to memory of 4248	4332	cmd.exe	79
PID 4332 wrote to memory of 4248	4332	cmd.exe	79

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\details.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4364
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c DKyVKmgVSvviRl.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4332
- - C:\Windows\system32\rundll32.exe
    rundll32 aMLjTIhBvevLGx.dll,SendData
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of NtCreateThreadExHideFromDebugger
    PID:4248

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/4248-134-0x000001BEA6370000-0x000001BEA64B9000-memory.dmp

Filesize
1.3MB

Download
memory/4248-135-0x000001BEA61B0000-0x000001BEA6226000-memory.dmp

Filesize
472KB

Download