Malware Analysis Report

2024-10-19 10:29

Sample ID 221020-z6rlwafaal
Target ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce
SHA256 ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce
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

ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce

Threat Level: Known bad

The file ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce 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 21:20

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-20 21:20

Reported

2022-10-21 00:55

Platform

win7-20220812-en

Max time kernel

37s

Max time network

48s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce.dll,#1

Signatures

Yunsip

trojan banker yunsip

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce.dll,#1

Network

Country Destination Domain Proto
IE 212.82.100.137:80 tcp
NL 142.251.39.100:80 tcp
US 209.202.254.10:80 tcp
IE 212.82.100.137:80 tcp

Files

memory/980-54-0x0000000000000000-mapping.dmp

memory/980-55-0x0000000075C61000-0x0000000075C63000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-20 21:20

Reported

2022-10-21 00:55

Platform

win10v2004-20220901-en

Max time kernel

91s

Max time network

153s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5016 wrote to memory of 3956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5016 wrote to memory of 3956 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5016 wrote to memory of 3956 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\ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ea3042ac391e0d5cc87c10d24c17d583239ea2827d8b16b2d931bfd1aa2245ce.dll,#1

Network

Country Destination Domain Proto
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
NL 142.251.39.100:80 tcp
NL 142.251.39.100:80 tcp
BE 8.238.110.126:80 tcp
US 52.152.108.96:443 tcp
US 13.89.179.10:443 tcp
BE 8.238.110.126:80 tcp
BE 8.238.110.126:80 tcp
BE 8.238.110.126:80 tcp
US 8.8.8.8:53 151.122.125.40.in-addr.arpa udp
IE 212.82.100.137:80 tcp
US 8.8.8.8:53 176.122.125.40.in-addr.arpa udp

Files

memory/3956-132-0x0000000000000000-mapping.dmp