Malware Analysis Report

2025-01-18 15:58

Sample ID 240304-r3zt3sdh44
Target b2630ccd0a3fcca0261f3a0f8deeb8af
SHA256 817977aebd4c7985224189808cc423e46e4f18b1640383af6f54818a9cce8729
Tags
dridex 22201 botnet loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

817977aebd4c7985224189808cc423e46e4f18b1640383af6f54818a9cce8729

Threat Level: Known bad

The file b2630ccd0a3fcca0261f3a0f8deeb8af 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 14:43

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-04 14:43

Reported

2024-03-04 14:46

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

156s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2630ccd0a3fcca0261f3a0f8deeb8af.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 452 wrote to memory of 1644 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 452 wrote to memory of 1644 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 452 wrote to memory of 1644 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\b2630ccd0a3fcca0261f3a0f8deeb8af.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2630ccd0a3fcca0261f3a0f8deeb8af.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1644 -ip 1644

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1644 -s 688

Network

Country Destination Domain Proto
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 208.143.182.52.in-addr.arpa udp

Files

memory/1644-1-0x0000000075230000-0x0000000075260000-memory.dmp

memory/1644-0-0x0000000000790000-0x0000000000796000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-04 14:43

Reported

2024-03-04 14:46

Platform

win7-20240221-en

Max time kernel

142s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2630ccd0a3fcca0261f3a0f8deeb8af.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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2630ccd0a3fcca0261f3a0f8deeb8af.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b2630ccd0a3fcca0261f3a0f8deeb8af.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1724 -s 308

Network

N/A

Files

memory/1724-0-0x0000000075020000-0x0000000075050000-memory.dmp

memory/1724-1-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/1724-2-0x0000000075020000-0x0000000075050000-memory.dmp