Malware Analysis Report

2024-10-19 10:29

Sample ID 221021-tlsesadgf9
Target 60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530
SHA256 60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530
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

60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530

Threat Level: Known bad

The file 60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530 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 16:09

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-21 16:09

Reported

2022-10-22 18:01

Platform

win7-20220901-en

Max time kernel

47s

Max time network

52s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1768 wrote to memory of 1112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1768 wrote to memory of 1112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1768 wrote to memory of 1112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1768 wrote to memory of 1112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1768 wrote to memory of 1112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1768 wrote to memory of 1112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1768 wrote to memory of 1112 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\60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530.dll,#1

Network

N/A

Files

memory/1112-54-0x0000000000000000-mapping.dmp

memory/1112-55-0x0000000076961000-0x0000000076963000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-21 16:09

Reported

2022-10-22 18:01

Platform

win10v2004-20220901-en

Max time kernel

143s

Max time network

149s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4944 wrote to memory of 4996 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4944 wrote to memory of 4996 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4944 wrote to memory of 4996 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\60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\60e39b3c287bcdc58b86b6a1d680aa7873ca83cc4ee3b86dd60c2cb96c532530.dll,#1

Network

Country Destination Domain Proto
US 52.182.141.63:443 tcp
FR 2.18.109.224:443 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 52.109.13.62:443 tcp
US 93.184.221.240:80 tcp

Files

memory/4996-132-0x0000000000000000-mapping.dmp