Malware Analysis Report

2025-01-18 15:58

Sample ID 240304-hdx5hscb9w
Target b1755081724f6e35bd47b8a290de75fe
SHA256 f00edb8e5872b2f90108c119329e296f5c5bd5c22a3777ee5a332a97b9f76b2a
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

f00edb8e5872b2f90108c119329e296f5c5bd5c22a3777ee5a332a97b9f76b2a

Threat Level: Known bad

The file b1755081724f6e35bd47b8a290de75fe 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 06:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-04 06:37

Reported

2024-03-04 06:40

Platform

win7-20240221-en

Max time kernel

141s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1755081724f6e35bd47b8a290de75fe.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\b1755081724f6e35bd47b8a290de75fe.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1755081724f6e35bd47b8a290de75fe.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2092 -s 300

Network

N/A

Files

memory/2092-0-0x0000000074F90000-0x0000000074FC0000-memory.dmp

memory/2092-1-0x0000000000440000-0x0000000000446000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-04 06:37

Reported

2024-03-04 06:40

Platform

win10v2004-20240226-en

Max time kernel

115s

Max time network

153s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1755081724f6e35bd47b8a290de75fe.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3888 wrote to memory of 3040 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3888 wrote to memory of 3040 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3888 wrote to memory of 3040 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\b1755081724f6e35bd47b8a290de75fe.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1755081724f6e35bd47b8a290de75fe.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3040 -ip 3040

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3040 -s 688

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4116 --field-trial-handle=3112,i,1786399861560734457,5606877702857066305,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.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
GB 172.217.16.234:443 tcp
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 21.236.111.52.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp

Files

memory/3040-0-0x0000000074AC0000-0x0000000074AF0000-memory.dmp

memory/3040-1-0x00000000009B0000-0x00000000009B6000-memory.dmp

memory/3040-2-0x0000000074AC0000-0x0000000074AF0000-memory.dmp