bumblebee | c640adc8c6c82e658ccc5595ac2ca3c1c226a87206ae8a1e31c3db261aeac0df

Analysis

max time kernel
143s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
11-02-2023 13:11

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General

Target

topicsMain.bat
Size

1KB
MD5

5ac482d3d3dce722972fae6a69fc8bce
SHA1

66744f07e3775b22572d1fd8fc60a58b47babc96
SHA256

311b4dc7cb37d5e22502ac5e6e7414ed3fc94777dac8cb0d7f234e3fd6702143
SHA512

abea1cddd5ad90c7b1f2859a14724a04bcfab61f38cbb81686ecb338d8f70d040afe0eaf1f572dfb7be26a9c9605cd44682ffa6335f90bcc8993d1d4eba0dc8e

Score

10^/10

bumblebee 102cc trojan

Malware Config

Extracted

Family

bumblebee

Botnet

102cc

160.20.147.242:443

146.19.173.86:443

51.68.144.43:443

172.86.120.111:443

103.175.16.104:443

104.168.157.253:443

23.254.167.63:443

205.185.113.34:443

rc4.plain

Signatures

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

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2504	TUmLJFkwKhG.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2504	TUmLJFkwKhG.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 3608 wrote to memory of 3536	3608	cmd.exe	82
PID 3608 wrote to memory of 3536	3608	cmd.exe	82
PID 3536 wrote to memory of 4340	3536	cmd.exe	83
PID 3536 wrote to memory of 4340	3536	cmd.exe	83
PID 3608 wrote to memory of 2504	3608	cmd.exe	84
PID 3608 wrote to memory of 2504	3608	cmd.exe	84

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\topicsMain.bat"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Windows\system32\cmd.exe
  cmd.exe /c start /b /min copy /Y C:\Windows\System32\rundll32.exe C:\ProgramData\TUmLJFkwKhG.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3536
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /K copy /Y C:\Windows\System32\rundll32.exe C:\ProgramData\TUmLJFkwKhG.exe
    3⤵
    PID:4340
- C:\ProgramData\TUmLJFkwKhG.exe
  "C:\ProgramData\TUmLJFkwKhG.exe" bios.dll,stProgNew
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtCreateThreadExHideFromDebugger
  PID:2504

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

C:\ProgramData\TUmLJFkwKhG.exe

Filesize
70KB

MD5
ef3179d498793bf4234f708d3be28633

SHA1
dd399ae46303343f9f0da189aee11c67bd868222

SHA256
b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

SHA512
02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

Download Submit
C:\ProgramData\TUmLJFkwKhG.exe

Filesize
70KB

MD5
ef3179d498793bf4234f708d3be28633

SHA1
dd399ae46303343f9f0da189aee11c67bd868222

SHA256
b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

SHA512
02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

Download Submit
memory/2504-137-0x000001E5729B0000-0x000001E572A2F000-memory.dmp

Filesize
508KB

Download
memory/2504-138-0x000001E572B90000-0x000001E572CF1000-memory.dmp

Filesize
1.4MB

Download
memory/2504-139-0x000001E5729B0000-0x000001E572A2F000-memory.dmp

Filesize
508KB

Download