Malware Analysis Report

2025-08-10 22:19

Sample ID 210615-68bjazf71a
Target af66c1a9887b18abe52b6ee9a3ddd3300344bc41fafa3c4b98f564ed7fbfad37
SHA256 af66c1a9887b18abe52b6ee9a3ddd3300344bc41fafa3c4b98f564ed7fbfad37
Tags
dridex 40112 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 Overview

score
10/10

SHA256

af66c1a9887b18abe52b6ee9a3ddd3300344bc41fafa3c4b98f564ed7fbfad37

Threat Level: Known bad

The file af66c1a9887b18abe52b6ee9a3ddd3300344bc41fafa3c4b98f564ed7fbfad37 was found to be: Known bad.

Malicious Activity Summary

dridex 40112 botnet loader

Dridex

Dridex Loader

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2021-06-15 11:28

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-15 11:28

Reported

2021-06-15 11:30

Platform

win10v20210408

Max time kernel

25s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\af66c1a9887b18abe52b6ee9a3ddd3300344bc41fafa3c4b98f564ed7fbfad37.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 AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 472 wrote to memory of 1564 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 472 wrote to memory of 1564 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 472 wrote to memory of 1564 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\af66c1a9887b18abe52b6ee9a3ddd3300344bc41fafa3c4b98f564ed7fbfad37.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\af66c1a9887b18abe52b6ee9a3ddd3300344bc41fafa3c4b98f564ed7fbfad37.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1564 -s 680

Network

N/A

Files

memory/1564-114-0x0000000000000000-mapping.dmp

memory/1564-115-0x0000000073F10000-0x0000000073F40000-memory.dmp

memory/1564-117-0x00000000023F0000-0x00000000023F6000-memory.dmp