Malware Analysis Report

2024-10-19 10:29

Sample ID 221021-x9aresceaj
Target e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98
SHA256 e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98
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

e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98

Threat Level: Known bad

The file e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98 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

2022-10-21 19:32

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-21 19:32

Reported

2022-10-22 23:06

Platform

win7-20220901-en

Max time kernel

47s

Max time network

52s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1416 wrote to memory of 1224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1416 wrote to memory of 1224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1416 wrote to memory of 1224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1416 wrote to memory of 1224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1416 wrote to memory of 1224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1416 wrote to memory of 1224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1416 wrote to memory of 1224 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\e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98.dll,#1

Network

N/A

Files

memory/1224-54-0x0000000000000000-mapping.dmp

memory/1224-55-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-21 19:32

Reported

2022-10-22 23:06

Platform

win10v2004-20220812-en

Max time kernel

117s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2448 wrote to memory of 8 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2448 wrote to memory of 8 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2448 wrote to memory of 8 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\e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\e58b09addd9d96efe60189ace754cbfa0b22b7a4c7f2995941c127daee388b98.dll,#1

Network

Country Destination Domain Proto
US 52.168.117.170:443 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 93.184.220.29:80 tcp

Files

memory/8-132-0x0000000000000000-mapping.dmp