Malware Analysis Report

2025-01-18 16:00

Sample ID 240305-rsqhnahh34
Target b4ed03c114564a07abf19b2983fc3874
SHA256 3bc1293b7d0710187a52bc682ad36bd762d09f5c2bc71c6cbe0acde1166aa6d4
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

3bc1293b7d0710187a52bc682ad36bd762d09f5c2bc71c6cbe0acde1166aa6d4

Threat Level: Known bad

The file b4ed03c114564a07abf19b2983fc3874 was found to be: Known bad.

Malicious Activity Summary

dridex 22201 botnet loader

Dridex

Dridex Loader

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-05 14:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-05 14:27

Reported

2024-03-05 14:30

Platform

win7-20240221-en

Max time kernel

140s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4ed03c114564a07abf19b2983fc3874.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\b4ed03c114564a07abf19b2983fc3874.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4ed03c114564a07abf19b2983fc3874.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2168 -s 308

Network

N/A

Files

memory/2168-0-0x0000000074B20000-0x0000000074B50000-memory.dmp

memory/2168-1-0x00000000001B0000-0x00000000001B6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-05 14:27

Reported

2024-03-05 14:30

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

153s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4ed03c114564a07abf19b2983fc3874.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 3448 wrote to memory of 4692 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3448 wrote to memory of 4692 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3448 wrote to memory of 4692 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\b4ed03c114564a07abf19b2983fc3874.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b4ed03c114564a07abf19b2983fc3874.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4692 -ip 4692

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 688

Network

Country Destination Domain Proto
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 131.72.42.20.in-addr.arpa udp

Files

memory/4692-0-0x0000000074BB0000-0x0000000074BE0000-memory.dmp

memory/4692-1-0x0000000001110000-0x0000000001116000-memory.dmp