Malware Analysis Report

2025-01-18 15:58

Sample ID 240304-j8ahdadg3v
Target b1a5be1fe5e0c72d9b24056cbda7630a
SHA256 013733351955b40b9719360d3a732f862adefc2da6c23df4edf50ca2d1ec2cb2
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

013733351955b40b9719360d3a732f862adefc2da6c23df4edf50ca2d1ec2cb2

Threat Level: Known bad

The file b1a5be1fe5e0c72d9b24056cbda7630a 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 08:19

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-04 08:19

Reported

2024-03-04 08:22

Platform

win7-20240221-en

Max time kernel

119s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1a5be1fe5e0c72d9b24056cbda7630a.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2872 wrote to memory of 2900 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2872 wrote to memory of 2900 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2872 wrote to memory of 2900 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2872 wrote to memory of 2900 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2872 wrote to memory of 2900 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2872 wrote to memory of 2900 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2872 wrote to memory of 2900 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\b1a5be1fe5e0c72d9b24056cbda7630a.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1a5be1fe5e0c72d9b24056cbda7630a.dll,#1

Network

N/A

Files

memory/2900-0-0x0000000074930000-0x0000000074960000-memory.dmp

memory/2900-1-0x00000000001E0000-0x00000000001E6000-memory.dmp

memory/2900-2-0x0000000074930000-0x0000000074960000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-04 08:19

Reported

2024-03-04 08:22

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1a5be1fe5e0c72d9b24056cbda7630a.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 1064 wrote to memory of 1820 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1064 wrote to memory of 1820 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1064 wrote to memory of 1820 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\b1a5be1fe5e0c72d9b24056cbda7630a.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1a5be1fe5e0c72d9b24056cbda7630a.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1820 -ip 1820

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 692

Network

Country Destination Domain Proto
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 205.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 179.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 15.173.189.20.in-addr.arpa udp

Files

memory/1820-0-0x0000000000A10000-0x0000000000A16000-memory.dmp

memory/1820-1-0x0000000074C90000-0x0000000074CC0000-memory.dmp

memory/1820-3-0x0000000000A10000-0x0000000000A16000-memory.dmp