Malware Analysis Report

2025-08-10 22:16

Sample ID 210615-f41ds9gr1s
Target b6536dcae6558e259f0fea872651f4f1b5e210c4fe34b3b22a92348a59eadf65
SHA256 b6536dcae6558e259f0fea872651f4f1b5e210c4fe34b3b22a92348a59eadf65
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

b6536dcae6558e259f0fea872651f4f1b5e210c4fe34b3b22a92348a59eadf65

Threat Level: Known bad

The file b6536dcae6558e259f0fea872651f4f1b5e210c4fe34b3b22a92348a59eadf65 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 12:06

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-15 12:06

Reported

2021-06-15 12:09

Platform

win10v20210410

Max time kernel

20s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6536dcae6558e259f0fea872651f4f1b5e210c4fe34b3b22a92348a59eadf65.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 2232 wrote to memory of 1944 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2232 wrote to memory of 1944 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2232 wrote to memory of 1944 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\b6536dcae6558e259f0fea872651f4f1b5e210c4fe34b3b22a92348a59eadf65.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b6536dcae6558e259f0fea872651f4f1b5e210c4fe34b3b22a92348a59eadf65.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1944 -s 676

Network

N/A

Files

memory/1944-114-0x0000000000000000-mapping.dmp

memory/1944-115-0x0000000073660000-0x0000000073690000-memory.dmp

memory/1944-117-0x0000000003210000-0x0000000003216000-memory.dmp