Malware Analysis Report

2025-01-18 15:58

Sample ID 240304-njnqxsha3t
Target b20218683df7fb4957e0c9e4842c8043
SHA256 0f311118268df476a1e31fd7cae4e7b8fe5ae073cf5072ad2203ef6e55d1c9a7
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

0f311118268df476a1e31fd7cae4e7b8fe5ae073cf5072ad2203ef6e55d1c9a7

Threat Level: Known bad

The file b20218683df7fb4957e0c9e4842c8043 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 11:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-04 11:25

Reported

2024-03-04 11:28

Platform

win7-20240221-en

Max time kernel

141s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b20218683df7fb4957e0c9e4842c8043.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\b20218683df7fb4957e0c9e4842c8043.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b20218683df7fb4957e0c9e4842c8043.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 300

Network

N/A

Files

memory/1628-1-0x0000000074E10000-0x0000000074E40000-memory.dmp

memory/1628-0-0x0000000000220000-0x0000000000226000-memory.dmp

memory/1628-5-0x0000000000220000-0x0000000000226000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-04 11:25

Reported

2024-03-04 11:28

Platform

win10v2004-20240226-en

Max time kernel

115s

Max time network

156s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b20218683df7fb4957e0c9e4842c8043.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 4300 wrote to memory of 1404 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4300 wrote to memory of 1404 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4300 wrote to memory of 1404 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\b20218683df7fb4957e0c9e4842c8043.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b20218683df7fb4957e0c9e4842c8043.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1404 -ip 1404

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 692

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=4076 --field-trial-handle=2972,i,4036376905309803364,5412922217215781933,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 232.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 172.217.169.42:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 42.169.217.172.in-addr.arpa udp
US 8.8.8.8:53 179.178.17.96.in-addr.arpa udp

Files

memory/1404-1-0x00000000010D0000-0x00000000010D6000-memory.dmp

memory/1404-0-0x00000000751C0000-0x00000000751F0000-memory.dmp