Malware Analysis Report

2024-10-19 10:29

Sample ID 221020-z68v6afacj
Target 155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694
SHA256 155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694
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

155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694

Threat Level: Known bad

The file 155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694 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 00:57

Platform

win7-20220812-en

Max time kernel

37s

Max time network

46s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1324 wrote to memory of 1964 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1324 wrote to memory of 1964 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1324 wrote to memory of 1964 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1324 wrote to memory of 1964 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1324 wrote to memory of 1964 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1324 wrote to memory of 1964 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1324 wrote to memory of 1964 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\155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694.dll,#1

Network

N/A

Files

memory/1964-54-0x0000000000000000-mapping.dmp

memory/1964-55-0x0000000075A11000-0x0000000075A13000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-20 21:20

Reported

2022-10-21 00:56

Platform

win10v2004-20220812-en

Max time kernel

132s

Max time network

158s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694.dll,#1

Signatures

Yunsip

trojan banker yunsip

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1952 wrote to memory of 4744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1952 wrote to memory of 4744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1952 wrote to memory of 4744 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\155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\155e9ce894eef64620a880f781c09ff8c920642c6e96a35b44ab9c011abc8694.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 f.7.6.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.0.0.0.0.3.0.1.3.0.6.2.ip6.arpa udp
NL 87.248.202.1:80 tcp
NL 178.79.208.1:80 tcp
IE 212.82.100.137:80 tcp
NL 87.248.202.1:80 tcp
GB 51.132.193.104:443 tcp
NL 87.248.202.1:80 tcp
NL 87.248.202.1:80 tcp

Files

memory/4744-132-0x0000000000000000-mapping.dmp