Malware Analysis Report

2024-10-19 10:29

Sample ID 221020-agsp7seddk
Target ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421
SHA256 ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421
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

ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421

Threat Level: Known bad

The file ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421 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 00:11

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-20 00:11

Reported

2022-10-20 05:54

Platform

win7-20220901-en

Max time kernel

47s

Max time network

51s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1724 wrote to memory of 1128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1724 wrote to memory of 1128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1724 wrote to memory of 1128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1724 wrote to memory of 1128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1724 wrote to memory of 1128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1724 wrote to memory of 1128 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1724 wrote to memory of 1128 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\ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421.dll,#1

Network

N/A

Files

memory/1128-54-0x0000000000000000-mapping.dmp

memory/1128-55-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-20 00:11

Reported

2022-10-20 05:56

Platform

win10v2004-20220812-en

Max time kernel

171s

Max time network

236s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4768 wrote to memory of 1028 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4768 wrote to memory of 1028 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4768 wrote to memory of 1028 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\ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ead6409badf8d0f2109e32028a19dc5a8d80a08d4853e2641ea14b75b26a6421.dll,#1

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 209.197.3.8:80 tcp
DE 51.116.253.168:443 tcp
NL 104.80.225.205:443 tcp
US 93.184.220.29:80 tcp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 15.89.54.20.in-addr.arpa udp
US 8.8.8.8:53 176.122.125.40.in-addr.arpa udp

Files

memory/1028-132-0x0000000000000000-mapping.dmp