Malware Analysis Report

2024-11-30 11:24

Sample ID 220509-vxgyvsgfel
Target unpack
SHA256 a670c683bfd2a0dc75a9b5fba8f491ec4126b1f0908a469687664a9023ad8b19
Tags
kutaki
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

a670c683bfd2a0dc75a9b5fba8f491ec4126b1f0908a469687664a9023ad8b19

Threat Level: Known bad

The file unpack was found to be: Known bad.

Malicious Activity Summary

kutaki

Kutaki Executable

Kutaki family

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-05-09 17:21

Signatures

Kutaki Executable

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

Kutaki family

kutaki

Analysis: behavioral1

Detonation Overview

Submitted

2022-05-09 17:21

Reported

2022-05-09 17:24

Platform

win7-20220414-en

Max time kernel

42s

Max time network

46s

Command Line

"C:\Users\Admin\AppData\Local\Temp\unpack.exe"

Signatures

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1552 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe C:\Windows\SysWOW64\cmd.exe
PID 1552 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe C:\Windows\SysWOW64\cmd.exe
PID 1552 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe C:\Windows\SysWOW64\cmd.exe
PID 1552 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\unpack.exe

"C:\Users\Admin\AppData\Local\Temp\unpack.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c C:\Users\Admin\AppData\Local\Temp\

Network

N/A

Files

memory/1552-56-0x0000000075B61000-0x0000000075B63000-memory.dmp

memory/1748-57-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-05-09 17:21

Reported

2022-05-09 17:24

Platform

win10v2004-20220414-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\unpack.exe"

Signatures

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1944 wrote to memory of 3372 N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe C:\Windows\SysWOW64\cmd.exe
PID 1944 wrote to memory of 3372 N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe C:\Windows\SysWOW64\cmd.exe
PID 1944 wrote to memory of 3372 N/A C:\Users\Admin\AppData\Local\Temp\unpack.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\unpack.exe

"C:\Users\Admin\AppData\Local\Temp\unpack.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c C:\Users\Admin\AppData\Local\Temp\

Network

Country Destination Domain Proto
NL 20.190.160.67:443 tcp
NL 20.190.160.67:443 tcp
NL 20.190.160.67:443 tcp
NL 20.190.160.67:443 tcp
NL 20.190.160.136:443 tcp
NL 20.190.160.136:443 tcp
NL 20.190.160.136:443 tcp
NL 20.190.160.136:443 tcp
US 52.182.143.208:443 tcp
NL 20.190.160.71:443 tcp
NL 20.190.160.71:443 tcp
NL 20.190.160.71:443 tcp
NL 20.190.160.67:443 tcp
NL 20.190.160.67:443 tcp
NL 20.190.160.67:443 tcp
NL 104.110.191.140:80 tcp
NL 104.110.191.140:80 tcp
NL 87.248.202.1:80 tcp
NL 20.190.160.71:443 tcp
NL 20.190.160.129:443 tcp
NL 20.190.160.129:443 tcp
NL 20.190.160.129:443 tcp
NL 20.190.160.136:443 tcp
NL 20.190.160.136:443 tcp
NL 20.190.160.136:443 tcp
NL 20.190.160.129:443 tcp
NL 20.190.160.75:443 tcp
NL 20.190.160.75:443 tcp
NL 20.190.160.75:443 tcp
NL 20.190.160.71:443 tcp
NL 20.190.160.71:443 tcp
NL 20.190.160.71:443 tcp
NL 20.190.160.75:443 tcp
NL 20.190.160.134:443 tcp
NL 20.190.160.134:443 tcp
NL 20.190.160.134:443 tcp
NL 20.190.160.129:443 tcp
NL 20.190.160.129:443 tcp
NL 20.190.160.129:443 tcp
NL 20.190.160.134:443 tcp
NL 20.190.160.75:443 tcp
NL 20.190.160.75:443 tcp
NL 20.190.160.75:443 tcp
NL 20.190.160.4:443 tcp
NL 20.190.160.134:443 tcp
NL 20.190.160.134:443 tcp
NL 20.190.160.134:443 tcp

Files

memory/3372-132-0x0000000000000000-mapping.dmp