Malware Analysis Report

2025-01-18 16:01

Sample ID 240407-yd6dwsce7v
Target 2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578
SHA256 2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578
Tags
dridex 40111 botnet evasion loader trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578

Threat Level: Known bad

The file 2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578 was found to be: Known bad.

Malicious Activity Summary

dridex 40111 botnet evasion loader trojan

Dridex

Dridex Loader

Checks whether UAC is enabled

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 19:41

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 19:41

Reported

2024-04-07 19:43

Platform

win7-20240221-en

Max time kernel

40s

Max time network

117s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578.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

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578.dll,#1

Network

N/A

Files

memory/2168-0-0x0000000074EF0000-0x0000000074F25000-memory.dmp

memory/2168-1-0x0000000000120000-0x0000000000126000-memory.dmp

memory/2168-2-0x0000000074EF0000-0x0000000074F25000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 19:41

Reported

2024-04-07 19:44

Platform

win10v2004-20240226-en

Max time kernel

73s

Max time network

160s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578.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

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1480 wrote to memory of 3500 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1480 wrote to memory of 3500 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1480 wrote to memory of 3500 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\2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2b23faaeae5565f2b376d53b37fc88ed73f43fdd97f1edb6d1e72bb752f77578.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
GB 23.44.234.16:80 tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 159.185.200.23.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 4.173.189.20.in-addr.arpa udp

Files

memory/3500-0-0x0000000074AF0000-0x0000000074B25000-memory.dmp

memory/3500-1-0x00000000012D0000-0x00000000012D6000-memory.dmp

memory/3500-2-0x0000000074AF0000-0x0000000074B25000-memory.dmp