Malware Analysis Report

2024-10-19 01:05

Sample ID 231014-b3c3bacb39
Target 1696-1-0x0000000001F70000-0x000000000207A000-memory.dmp
SHA256 d06c41ac4e3b95dd0afbd0e10d554d164cce214dccd6bcae461181fa31e0349c
Tags
js1 bumblebee
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d06c41ac4e3b95dd0afbd0e10d554d164cce214dccd6bcae461181fa31e0349c

Threat Level: Known bad

The file 1696-1-0x0000000001F70000-0x000000000207A000-memory.dmp was found to be: Known bad.

Malicious Activity Summary

js1 bumblebee

Bumblebee family

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-10-14 01:39

Signatures

Bumblebee family

bumblebee

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-14 01:39

Reported

2023-10-14 14:28

Platform

win7-20230831-en

Max time kernel

117s

Max time network

142s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1696-1-0x0000000001F70000-0x000000000207A000-memory.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1696-1-0x0000000001F70000-0x000000000207A000-memory.dll,#1

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-14 01:39

Reported

2023-10-14 14:28

Platform

win10v2004-20230915-en

Max time kernel

189s

Max time network

214s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1696-1-0x0000000001F70000-0x000000000207A000-memory.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2812 wrote to memory of 4120 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\WerFault.exe
PID 2812 wrote to memory of 4120 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\WerFault.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\1696-1-0x0000000001F70000-0x000000000207A000-memory.dll,#1

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2812 -s 240

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 126.177.238.8.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 29.81.57.23.in-addr.arpa udp
US 8.8.8.8:53 126.24.238.8.in-addr.arpa udp
US 8.8.8.8:53 226.162.46.104.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp

Files

N/A