Malware Analysis Report

2025-01-18 18:17

Sample ID 201108-5ngrck47zn
Target 235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972
SHA256 235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972
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

235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972

Threat Level: Known bad

The file 235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972 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

2020-11-08 18:01

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-11-08 18:01

Reported

2020-11-09 01:57

Platform

win7v20201028

Max time kernel

3s

Max time network

9s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1012 wrote to memory of 1368 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1012 wrote to memory of 1368 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1012 wrote to memory of 1368 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1012 wrote to memory of 1368 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1012 wrote to memory of 1368 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1012 wrote to memory of 1368 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1012 wrote to memory of 1368 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\235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972.dll,#1

Network

N/A

Files

memory/1368-0-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-08 18:01

Reported

2020-11-09 01:57

Platform

win10v20201028

Max time kernel

12s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 984 wrote to memory of 3984 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 984 wrote to memory of 3984 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 984 wrote to memory of 3984 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\235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\235997a730c082f9f59860516ea46aaed71fd3e8227f7b2471abdf80e0971972.dll,#1

Network

N/A

Files

memory/3984-0-0x0000000000000000-mapping.dmp