Malware Analysis Report

2024-10-19 10:29

Sample ID 221021-x9bzgsccb7
Target db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e
SHA256 db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e
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

db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e

Threat Level: Known bad

The file db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e 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 23:04

Platform

win7-20220812-en

Max time kernel

33s

Max time network

41s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1928 wrote to memory of 1704 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1928 wrote to memory of 1704 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1928 wrote to memory of 1704 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1928 wrote to memory of 1704 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1928 wrote to memory of 1704 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1928 wrote to memory of 1704 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1928 wrote to memory of 1704 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\db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e.dll,#1

Network

N/A

Files

memory/1704-54-0x0000000000000000-mapping.dmp

memory/1704-55-0x00000000762B1000-0x00000000762B3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-21 19:32

Reported

2022-10-22 23:06

Platform

win10v2004-20220812-en

Max time kernel

167s

Max time network

185s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2444 wrote to memory of 4124 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2444 wrote to memory of 4124 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2444 wrote to memory of 4124 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\db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\db145e9a4a25c814bad5249b7f2ec7dbc516a04aed1cdc635981973648d59e2e.dll,#1

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
NL 95.101.78.82:80 tcp
NL 104.80.225.205:443 tcp
NL 8.248.5.254:80 tcp
US 52.182.143.208:443 tcp
NL 8.248.5.254:80 tcp
NL 8.248.5.254:80 tcp
US 8.8.8.8:53 151.122.125.40.in-addr.arpa udp

Files

memory/4124-132-0x0000000000000000-mapping.dmp