Malware Analysis Report

2025-01-18 15:44

Sample ID 240816-2l2x8avfpm
Target 50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453
SHA256 50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453
Tags
dridex 22203 botnet discovery loader
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

50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453

Threat Level: Known bad

The file 50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453 was found to be: Known bad.

Malicious Activity Summary

dridex 22203 botnet discovery loader

Dridex

Dridex Loader

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 22:41

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 22:41

Reported

2024-08-16 22:43

Platform

win7-20240705-en

Max time kernel

141s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453.dll,#1

Signatures

Dridex

botnet dridex

Dridex Loader

botnet loader
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2456 -s 220

Network

N/A

Files

memory/2456-0-0x00000000001E0000-0x00000000001E6000-memory.dmp

memory/2456-1-0x00000000749E0000-0x0000000074A0F000-memory.dmp

memory/2456-3-0x00000000001E0000-0x00000000001E6000-memory.dmp

memory/2456-2-0x00000000749E0000-0x0000000074A0F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 22:41

Reported

2024-08-16 22:43

Platform

win10v2004-20240802-en

Max time kernel

139s

Max time network

137s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453.dll,#1

Signatures

Dridex

botnet dridex

Dridex Loader

botnet loader
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2728 wrote to memory of 3944 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2728 wrote to memory of 3944 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2728 wrote to memory of 3944 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\50970f32f71f8e7497cecbb3b051cf6c54606751baf6eaebdffa83d160333453.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3944 -ip 3944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3944 -s 624

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 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/3944-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

memory/3944-1-0x00000000751A0000-0x00000000751CF000-memory.dmp

memory/3944-3-0x00000000005B0000-0x00000000005B6000-memory.dmp

memory/3944-2-0x00000000751A0000-0x00000000751CF000-memory.dmp