Malware Analysis Report

2025-01-18 18:16

Sample ID 241216-fwae3axldr
Target 2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086ebN.exe
SHA256 2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086eb
Tags
yunsip banker discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086eb

Threat Level: Known bad

The file 2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086ebN.exe was found to be: Known bad.

Malicious Activity Summary

yunsip banker discovery trojan

Yunsip family

Yunsip

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-16 05:12

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-16 05:12

Reported

2024-12-16 05:14

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086ebN.dll,#1

Signatures

Yunsip

trojan banker yunsip

Yunsip family

yunsip

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086ebN.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086ebN.dll,#1

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-16 05:12

Reported

2024-12-16 05:14

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

95s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086ebN.dll,#1

Signatures

Yunsip

trojan banker yunsip

Yunsip family

yunsip

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3840 wrote to memory of 1052 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3840 wrote to memory of 1052 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3840 wrote to memory of 1052 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\2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086ebN.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2e61093f46440639698c0c2ce373ade6558612c28e84c0b87cfbc4cc5d1086ebN.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 21.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

N/A