Malware Analysis Report

2024-10-19 10:29

Sample ID 221020-z7aprafbg4
Target 07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881
SHA256 07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881
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

07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881

Threat Level: Known bad

The file 07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881 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 21:21

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-20 21:21

Reported

2022-10-21 00:44

Platform

win7-20220812-en

Max time kernel

37s

Max time network

47s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881.dll,#1

Signatures

Yunsip

trojan banker yunsip

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881.dll,#1

Network

Country Destination Domain Proto
US 104.19.241.83:443 tcp
US 104.18.100.40:443 tcp

Files

memory/1168-54-0x0000000000000000-mapping.dmp

memory/1168-55-0x0000000075E31000-0x0000000075E33000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-20 21:21

Reported

2022-10-21 00:44

Platform

win10v2004-20220812-en

Max time kernel

126s

Max time network

144s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3008 wrote to memory of 980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3008 wrote to memory of 980 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3008 wrote to memory of 980 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\07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\07d2c3e4494cd9efe203af28078f184da742fcbe4576658e11d3905a75dd3881.dll,#1

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 40.125.122.151:443 tcp
US 20.189.173.4:443 tcp
NL 87.248.202.1:80 tcp
NL 87.248.202.1:80 tcp
NL 87.248.202.1:80 tcp
US 8.8.8.8:53 15.89.54.20.in-addr.arpa udp
US 8.8.8.8:53 9.9.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.3.0.4.0.0.3.0.1.3.0.6.2.ip6.arpa udp

Files

memory/980-132-0x0000000000000000-mapping.dmp