Malware Analysis Report

2024-11-15 07:18

Sample ID 220701-jd1q3sabal
Target 3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd
SHA256 3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd
Tags
kutaki keylogger stealer
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

3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd

Threat Level: Known bad

The file 3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd was found to be: Known bad.

Malicious Activity Summary

kutaki keylogger stealer

Kutaki

Kutaki Executable

Kutaki family

Executes dropped EXE

Drops startup file

Loads dropped DLL

Maps connected drives based on registry

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-07-01 07:33

Signatures

Kutaki Executable

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

Kutaki family

kutaki

Analysis: behavioral1

Detonation Overview

Submitted

2022-07-01 07:33

Reported

2022-07-01 09:21

Platform

win7-20220414-en

Max time kernel

72s

Max time network

48s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe"

Signatures

Kutaki

stealer keylogger kutaki

Kutaki Executable

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe N/A

Maps connected drives based on registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1628 wrote to memory of 112 N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe C:\Windows\SysWOW64\cmd.exe
PID 1628 wrote to memory of 112 N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe C:\Windows\SysWOW64\cmd.exe
PID 1628 wrote to memory of 112 N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe C:\Windows\SysWOW64\cmd.exe
PID 1628 wrote to memory of 112 N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe C:\Windows\SysWOW64\cmd.exe
PID 1628 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe
PID 1628 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe
PID 1628 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe
PID 1628 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe

"C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe"

C:\Windows\SysWOW64\cmd.exe

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

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe"

Network

N/A

Files

memory/1628-56-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

memory/112-57-0x0000000000000000-mapping.dmp

\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe

MD5 609b31697442f224deb7fcd4170e8fd3
SHA1 11aed89fd1a0141fcc4626c1411239e5afe6ee8c
SHA256 3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd
SHA512 aeb9d03cc8feab950ddb36ffab3e68a2eab9fd31ab4da01236ee8e539d4078ac92d28ef7245a346a331324cd3aea20f3f18322f8371153ca93ac4b5c94aa724c

memory/1752-60-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe

MD5 609b31697442f224deb7fcd4170e8fd3
SHA1 11aed89fd1a0141fcc4626c1411239e5afe6ee8c
SHA256 3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd
SHA512 aeb9d03cc8feab950ddb36ffab3e68a2eab9fd31ab4da01236ee8e539d4078ac92d28ef7245a346a331324cd3aea20f3f18322f8371153ca93ac4b5c94aa724c

\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe

MD5 609b31697442f224deb7fcd4170e8fd3
SHA1 11aed89fd1a0141fcc4626c1411239e5afe6ee8c
SHA256 3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd
SHA512 aeb9d03cc8feab950ddb36ffab3e68a2eab9fd31ab4da01236ee8e539d4078ac92d28ef7245a346a331324cd3aea20f3f18322f8371153ca93ac4b5c94aa724c

Analysis: behavioral2

Detonation Overview

Submitted

2022-07-01 07:33

Reported

2022-07-01 09:20

Platform

win10v2004-20220414-en

Max time kernel

151s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe"

Signatures

Kutaki

stealer keylogger kutaki

Kutaki Executable

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\euywtfch.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\euywtfch.exe C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\euywtfch.exe C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe N/A

Maps connected drives based on registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\euywtfch.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\euywtfch.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe

"C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe"

C:\Windows\SysWOW64\cmd.exe

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

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\euywtfch.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\euywtfch.exe"

Network

Country Destination Domain Proto
US 52.109.12.18:443 tcp
US 52.168.117.170:443 tcp
NL 104.110.191.140:80 tcp
US 93.184.221.240:80 tcp
US 8.238.111.126:80 tcp
US 8.238.111.126:80 tcp
US 204.79.197.203:80 tcp

Files

memory/5060-132-0x0000000000000000-mapping.dmp

memory/1316-133-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\euywtfch.exe

MD5 609b31697442f224deb7fcd4170e8fd3
SHA1 11aed89fd1a0141fcc4626c1411239e5afe6ee8c
SHA256 3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd
SHA512 aeb9d03cc8feab950ddb36ffab3e68a2eab9fd31ab4da01236ee8e539d4078ac92d28ef7245a346a331324cd3aea20f3f18322f8371153ca93ac4b5c94aa724c

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\euywtfch.exe

MD5 609b31697442f224deb7fcd4170e8fd3
SHA1 11aed89fd1a0141fcc4626c1411239e5afe6ee8c
SHA256 3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd
SHA512 aeb9d03cc8feab950ddb36ffab3e68a2eab9fd31ab4da01236ee8e539d4078ac92d28ef7245a346a331324cd3aea20f3f18322f8371153ca93ac4b5c94aa724c