Malware Analysis Report

2025-01-18 15:58

Sample ID 240304-edjeksha7w
Target b1250f72b0216c1e93383a733f5821e5
SHA256 9523b7f2526141e1dcb8695f99d4b3b5503659d7c011d5ba87d9a7e944ba5145
Tags
dridex 22201 botnet loader
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

9523b7f2526141e1dcb8695f99d4b3b5503659d7c011d5ba87d9a7e944ba5145

Threat Level: Known bad

The file b1250f72b0216c1e93383a733f5821e5 was found to be: Known bad.

Malicious Activity Summary

dridex 22201 botnet loader

Dridex

Dridex Loader

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-04 03:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-04 03:49

Reported

2024-03-04 03:52

Platform

win7-20240221-en

Max time kernel

141s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1250f72b0216c1e93383a733f5821e5.dll,#1

Signatures

Dridex

botnet dridex

Dridex Loader

botnet loader
Description Indicator Process Target
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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1250f72b0216c1e93383a733f5821e5.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1250f72b0216c1e93383a733f5821e5.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2216 -s 308

Network

N/A

Files

memory/2216-0-0x0000000074B20000-0x0000000074B50000-memory.dmp

memory/2216-1-0x0000000000120000-0x0000000000126000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-04 03:49

Reported

2024-03-04 03:51

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

153s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1250f72b0216c1e93383a733f5821e5.dll,#1

Signatures

Dridex

botnet dridex

Dridex Loader

botnet loader
Description Indicator Process Target
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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 688 wrote to memory of 4432 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 688 wrote to memory of 4432 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 688 wrote to memory of 4432 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\b1250f72b0216c1e93383a733f5821e5.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1250f72b0216c1e93383a733f5821e5.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4432 -ip 4432

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4432 -s 564

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 28.73.42.20.in-addr.arpa udp

Files

memory/4432-0-0x0000000075590000-0x00000000755C0000-memory.dmp

memory/4432-1-0x00000000004A0000-0x00000000004A6000-memory.dmp