Malware Analysis Report

2025-01-18 15:56

Sample ID 240306-vv2v9aec5x
Target b7f2b97b13cbbbd6bb0a4c6625dd0875
SHA256 56a4770b445e390dfb32735c0c90efbeeeceaf78e7b58d7ed12bb433ed056b72
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

56a4770b445e390dfb32735c0c90efbeeeceaf78e7b58d7ed12bb433ed056b72

Threat Level: Known bad

The file b7f2b97b13cbbbd6bb0a4c6625dd0875 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

2024-03-06 17:19

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-06 17:19

Reported

2024-03-06 17:22

Platform

win7-20240221-en

Max time kernel

142s

Max time network

127s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7f2b97b13cbbbd6bb0a4c6625dd0875.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\b7f2b97b13cbbbd6bb0a4c6625dd0875.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7f2b97b13cbbbd6bb0a4c6625dd0875.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 308

Network

N/A

Files

memory/1736-0-0x0000000074D70000-0x0000000074DA0000-memory.dmp

memory/1736-1-0x0000000000170000-0x0000000000176000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-06 17:19

Reported

2024-03-06 17:22

Platform

win10v2004-20240226-en

Max time kernel

118s

Max time network

155s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7f2b97b13cbbbd6bb0a4c6625dd0875.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 1632 wrote to memory of 3384 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1632 wrote to memory of 3384 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1632 wrote to memory of 3384 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\b7f2b97b13cbbbd6bb0a4c6625dd0875.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b7f2b97b13cbbbd6bb0a4c6625dd0875.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3384 -ip 3384

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3384 -s 696

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 204.201.50.20.in-addr.arpa udp

Files

memory/3384-1-0x00000000752A0000-0x00000000752D0000-memory.dmp

memory/3384-0-0x0000000001860000-0x0000000001866000-memory.dmp

memory/3384-2-0x00000000752A0000-0x00000000752D0000-memory.dmp

memory/3384-3-0x0000000001860000-0x0000000001866000-memory.dmp