Malware Analysis Report

2024-10-23 15:36

Sample ID 230914-kt6gyaag8v
Target 1696-1-0x0000000001F70000-0x000000000207A000-memory.dmp
SHA256 d06c41ac4e3b95dd0afbd0e10d554d164cce214dccd6bcae461181fa31e0349c
Tags
js1 bumblebee
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

Drops file in System32 directory

Program crash

Unsigned PE

Checks processor information in registry

Enumerates system info in registry

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-14 08:54

Signatures

Bumblebee family

bumblebee

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-14 08:54

Reported

2023-09-14 08:57

Platform

win7-20230831-en

Max time kernel

120s

Max time network

123s

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

2023-09-14 08:54

Reported

2023-09-14 08:57

Platform

win10v2004-20230831-en

Max time kernel

142s

Max time network

147s

Command Line

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

Signatures

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{1572FF0D-9CD0-4432-81E8-C71F41545BF8}.catalogItem C:\Windows\System32\svchost.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\system32\WerFault.exe C:\Windows\system32\rundll32.exe

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Windows\System32\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\System32\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\System32\svchost.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Windows\System32\svchost.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Windows\System32\svchost.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\system32\rundll32.exe

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

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k netsvcs -p

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -pss -s 408 -p 4844 -ip 4844

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 4844 -s 240

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 126.177.238.8.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 138.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp

Files

N/A