Malware Analysis Report

2025-08-06 01:58

Sample ID 241112-1fkajs1kay
Target a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f
SHA256 a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f
Tags
emotet epoch1 banker discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f

Threat Level: Known bad

The file a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f was found to be: Known bad.

Malicious Activity Summary

emotet epoch1 banker discovery trojan

Emotet

Emotet family

Blocklisted process makes network request

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-12 21:35

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 21:35

Reported

2024-11-12 21:38

Platform

win7-20241023-en

Max time kernel

141s

Max time network

149s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f.dll,#1

Signatures

Emotet

trojan banker emotet

Emotet family

emotet

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2556 wrote to memory of 2408 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2556 wrote to memory of 2408 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2556 wrote to memory of 2408 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2556 wrote to memory of 2408 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2556 wrote to memory of 2408 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2556 wrote to memory of 2408 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2556 wrote to memory of 2408 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\a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f.dll,#1

Network

Country Destination Domain Proto
AR 152.170.79.100:80 tcp
AR 152.170.79.100:80 tcp
AR 190.247.139.101:80 tcp
AR 190.247.139.101:80 tcp
US 138.197.99.250:8080 tcp
US 138.197.99.250:8080 tcp
US 167.71.148.58:443 tcp
US 167.71.148.58:443 tcp

Files

memory/2408-0-0x00000000002F0000-0x000000000030F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 21:35

Reported

2024-11-12 21:38

Platform

win10v2004-20241007-en

Max time kernel

136s

Max time network

142s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f.dll,#1

Signatures

Emotet

trojan banker emotet

Emotet family

emotet

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4684 wrote to memory of 2304 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4684 wrote to memory of 2304 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4684 wrote to memory of 2304 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\a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\a520f237b14ca2d2798bf8b33aa89241d81b505342f51791f0b123f2a2942a4f.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
AR 152.170.79.100:80 tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
AR 190.247.139.101:80 tcp
US 138.197.99.250:8080 tcp
US 167.71.148.58:443 tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
KR 211.215.18.93:8080 tcp
BR 191.241.233.198:80 tcp

Files

memory/2304-0-0x00000000026A0000-0x00000000026BF000-memory.dmp