Malware Analysis Report

2025-08-10 22:18

Sample ID 210615-alvnaxtll6
Target 4155519c90f7fe79feba01e654f4926bda9e7a13603ea2a75300e29cb251e75b
SHA256 4155519c90f7fe79feba01e654f4926bda9e7a13603ea2a75300e29cb251e75b
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

4155519c90f7fe79feba01e654f4926bda9e7a13603ea2a75300e29cb251e75b

Threat Level: Known bad

The file 4155519c90f7fe79feba01e654f4926bda9e7a13603ea2a75300e29cb251e75b 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 11:31

Platform

win10v20210408

Max time kernel

25s

Max time network

112s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4155519c90f7fe79feba01e654f4926bda9e7a13603ea2a75300e29cb251e75b.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 660 wrote to memory of 1260 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 660 wrote to memory of 1260 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 660 wrote to memory of 1260 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\4155519c90f7fe79feba01e654f4926bda9e7a13603ea2a75300e29cb251e75b.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4155519c90f7fe79feba01e654f4926bda9e7a13603ea2a75300e29cb251e75b.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1260 -s 684

Network

N/A

Files

memory/1260-114-0x0000000000000000-mapping.dmp

memory/1260-117-0x0000000003200000-0x000000000334A000-memory.dmp

memory/1260-115-0x00000000735F0000-0x0000000073620000-memory.dmp