Malware Analysis Report

2025-08-05 16:34

Sample ID 210615-yz9sxcyb26
Target 20cfb7261b4b9a6b7dfa96d248b3d2444a4aa712ffce804102b72f0f2276766e
SHA256 20cfb7261b4b9a6b7dfa96d248b3d2444a4aa712ffce804102b72f0f2276766e
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

20cfb7261b4b9a6b7dfa96d248b3d2444a4aa712ffce804102b72f0f2276766e

Threat Level: Known bad

The file 20cfb7261b4b9a6b7dfa96d248b3d2444a4aa712ffce804102b72f0f2276766e 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 16:17

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-06-15 16:17

Reported

2021-06-15 16:19

Platform

win10v20210410

Max time kernel

17s

Max time network

113s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\20cfb7261b4b9a6b7dfa96d248b3d2444a4aa712ffce804102b72f0f2276766e.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 3768 wrote to memory of 3736 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3768 wrote to memory of 3736 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3768 wrote to memory of 3736 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\20cfb7261b4b9a6b7dfa96d248b3d2444a4aa712ffce804102b72f0f2276766e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\20cfb7261b4b9a6b7dfa96d248b3d2444a4aa712ffce804102b72f0f2276766e.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3736 -s 684

Network

N/A

Files

memory/3736-114-0x0000000000000000-mapping.dmp

memory/3736-115-0x0000000073D70000-0x0000000073DA0000-memory.dmp

memory/3736-117-0x0000000000FF0000-0x0000000001013000-memory.dmp