Malware Analysis Report

2025-01-18 15:57

Sample ID 240303-1lay3ahb4v
Target b0789f03524108e4f7d75f9978c41ee2
SHA256 75489d587b36cf02d3de731eeb56b57e198eea4cbee5631567e642e838d9a050
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

75489d587b36cf02d3de731eeb56b57e198eea4cbee5631567e642e838d9a050

Threat Level: Known bad

The file b0789f03524108e4f7d75f9978c41ee2 was found to be: Known bad.

Malicious Activity Summary

dridex 22201 botnet loader

Dridex

Dridex Loader

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-03 21:43

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-03 21:43

Reported

2024-03-03 21:46

Platform

win7-20240221-en

Max time kernel

140s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b0789f03524108e4f7d75f9978c41ee2.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\b0789f03524108e4f7d75f9978c41ee2.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b0789f03524108e4f7d75f9978c41ee2.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2192 -s 300

Network

N/A

Files

memory/2192-0-0x0000000074680000-0x00000000746B0000-memory.dmp

memory/2192-1-0x0000000000210000-0x0000000000216000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-03 21:43

Reported

2024-03-03 21:46

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

157s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b0789f03524108e4f7d75f9978c41ee2.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 4136 wrote to memory of 3852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4136 wrote to memory of 3852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4136 wrote to memory of 3852 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\b0789f03524108e4f7d75f9978c41ee2.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b0789f03524108e4f7d75f9978c41ee2.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3852 -ip 3852

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 688

Network

Country Destination Domain Proto
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 210.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 7.173.189.20.in-addr.arpa udp

Files

memory/3852-0-0x0000000075270000-0x00000000752A0000-memory.dmp

memory/3852-1-0x0000000000640000-0x0000000000646000-memory.dmp

memory/3852-2-0x0000000075270000-0x00000000752A0000-memory.dmp