Malware Analysis Report

2024-10-19 10:29

Sample ID 221021-x88l3acdhn
Target ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a
SHA256 ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a
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

ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a

Threat Level: Known bad

The file ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a 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 23:07

Platform

win7-20220812-en

Max time kernel

27s

Max time network

46s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1664 wrote to memory of 1680 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1664 wrote to memory of 1680 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1664 wrote to memory of 1680 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1664 wrote to memory of 1680 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1664 wrote to memory of 1680 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1664 wrote to memory of 1680 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1664 wrote to memory of 1680 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\ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a.dll,#1

Network

N/A

Files

memory/1680-54-0x0000000000000000-mapping.dmp

memory/1680-55-0x0000000075FB1000-0x0000000075FB3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-21 19:32

Reported

2022-10-22 23:06

Platform

win10v2004-20220901-en

Max time kernel

91s

Max time network

153s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4920 wrote to memory of 4932 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4920 wrote to memory of 4932 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4920 wrote to memory of 4932 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\ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed6a3ebae6bb9ff3680cdb61171517b6dd7a54f87aa73986486b8374f20a3b5a.dll,#1

Network

Country Destination Domain Proto
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 20.189.173.1:443 tcp
NL 87.248.202.1:80 tcp
US 93.184.221.240:80 tcp

Files

memory/4932-132-0x0000000000000000-mapping.dmp