Malware Analysis Report

2024-10-19 10:29

Sample ID 221020-ahgpbsecc7
Target 082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3
SHA256 082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3
Tags
yunsip banker trojan
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3

Threat Level: Known bad

The file 082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3 was found to be: Known bad.

Malicious Activity Summary

yunsip banker trojan

Yunsip

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-10-20 00:12

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-20 00:12

Reported

2022-10-20 05:54

Platform

win7-20220812-en

Max time kernel

8s

Max time network

46s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3.dll,#1

Signatures

Yunsip

trojan banker yunsip

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3.dll,#1

Network

N/A

Files

memory/1984-54-0x0000000000000000-mapping.dmp

memory/1984-55-0x0000000075571000-0x0000000075573000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-20 00:12

Reported

2022-10-20 05:53

Platform

win10v2004-20220812-en

Max time kernel

153s

Max time network

169s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1280 wrote to memory of 980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1280 wrote to memory of 980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1280 wrote to memory of 980 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\082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\082d8e91e0f2b8912f3bece573a8765ba44734ee1c5c6cb6a8d06e80f0f404c3.dll,#1

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
NL 104.80.225.205:443 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 40.125.122.176:443 tcp
US 93.184.220.29:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 20.189.173.2:443 tcp

Files

memory/980-132-0x0000000000000000-mapping.dmp