Malware Analysis Report

2024-10-19 10:29

Sample ID 221021-x9eqdaceam
Target c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c
SHA256 c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c
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

c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c

Threat Level: Known bad

The file c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c 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

2022-10-21 19:32

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-21 19:32

Reported

2022-10-22 23:07

Platform

win7-20220812-en

Max time kernel

6s

Max time network

47s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c.dll,#1

Signatures

Yunsip

trojan banker yunsip

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c.dll,#1

Network

N/A

Files

memory/368-54-0x0000000000000000-mapping.dmp

memory/368-55-0x0000000074AD1000-0x0000000074AD3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-21 19:32

Reported

2022-10-22 23:07

Platform

win10v2004-20220812-en

Max time kernel

151s

Max time network

190s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3644 wrote to memory of 1364 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3644 wrote to memory of 1364 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3644 wrote to memory of 1364 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\c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c95e77348941c858df79b1b0ce1629608e036ef6ac60381eb34c5f376f74f67c.dll,#1

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
NL 178.79.208.1:80 tcp

Files

memory/1364-132-0x0000000000000000-mapping.dmp