Malware Analysis Report

2025-01-18 15:44

Sample ID 240816-zw13kazhqq
Target 343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4
SHA256 343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4
Tags
dridex 22203 botnet discovery loader
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

343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4

Threat Level: Known bad

The file 343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4 was found to be: Known bad.

Malicious Activity Summary

dridex 22203 botnet discovery loader

Dridex

Dridex Loader

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 21:04

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 21:04

Reported

2024-08-16 21:07

Platform

win7-20240704-en

Max time kernel

141s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4.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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 220

Network

N/A

Files

memory/2820-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2820-0-0x0000000074B60000-0x0000000074B8F000-memory.dmp

memory/2820-3-0x0000000074B60000-0x0000000074B8F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-16 21:04

Reported

2024-08-16 21:07

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

127s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4.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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1436 wrote to memory of 3368 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1436 wrote to memory of 3368 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1436 wrote to memory of 3368 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\343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\343f46b7742113d51d1b6431b83d32c3702284fc4c13122c14f9a89854be66c4.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3368 -ip 3368

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3368 -s 616

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/3368-2-0x0000000001430000-0x0000000001436000-memory.dmp

memory/3368-1-0x0000000075390000-0x00000000753BF000-memory.dmp

memory/3368-3-0x0000000075390000-0x00000000753BF000-memory.dmp