Malware Analysis Report

2024-11-30 11:24

Sample ID 220521-bky7tscac7
Target 614b1804f29b1fd1aaaf62dd34c9a731bd43d68f47407e0ca2aec09a246e4101
SHA256 614b1804f29b1fd1aaaf62dd34c9a731bd43d68f47407e0ca2aec09a246e4101
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

614b1804f29b1fd1aaaf62dd34c9a731bd43d68f47407e0ca2aec09a246e4101

Threat Level: Known bad

The file 614b1804f29b1fd1aaaf62dd34c9a731bd43d68f47407e0ca2aec09a246e4101 was found to be: Known bad.

Malicious Activity Summary

kutaki keylogger stealer

Kutaki family

Kutaki

Kutaki Executable

Executes dropped EXE

Drops startup file

Loads dropped DLL

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-05-21 01:12

Signatures

Kutaki Executable

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

Kutaki family

kutaki

Analysis: behavioral1

Detonation Overview

Submitted

2022-05-21 01:12

Reported

2022-05-21 01:43

Platform

win7-20220414-en

Max time kernel

62s

Max time network

47s

Command Line

"C:\Users\Admin\AppData\Local\Temp\image.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\sdookich.exe N/A

Drops startup file

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

Loads dropped DLL

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

Processes

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

"C:\Users\Admin\AppData\Local\Temp\image.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\sdookich.exe

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

Network

N/A

Files

memory/1040-56-0x0000000076811000-0x0000000076813000-memory.dmp

memory/1996-57-0x0000000000000000-mapping.dmp

memory/2036-60-0x0000000000000000-mapping.dmp

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

MD5 8386b787dfff37c3e7bcdcc03a0a7487
SHA1 c20d9e818f912fc4f47ed1e85718c6196b911801
SHA256 25f0420d3551985569fb57497301c7d2f691083d7318d28db5bab2e8a6a0bb85
SHA512 aace70e1d3bd221fffdcfe8649df4e47807b5f2679032866acf31b41814623eab85b6930bb9e79c11d4f48edfb5670d9d9a98941106c06c67cd9bd22f5c64bd0

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

MD5 8386b787dfff37c3e7bcdcc03a0a7487
SHA1 c20d9e818f912fc4f47ed1e85718c6196b911801
SHA256 25f0420d3551985569fb57497301c7d2f691083d7318d28db5bab2e8a6a0bb85
SHA512 aace70e1d3bd221fffdcfe8649df4e47807b5f2679032866acf31b41814623eab85b6930bb9e79c11d4f48edfb5670d9d9a98941106c06c67cd9bd22f5c64bd0

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

MD5 8386b787dfff37c3e7bcdcc03a0a7487
SHA1 c20d9e818f912fc4f47ed1e85718c6196b911801
SHA256 25f0420d3551985569fb57497301c7d2f691083d7318d28db5bab2e8a6a0bb85
SHA512 aace70e1d3bd221fffdcfe8649df4e47807b5f2679032866acf31b41814623eab85b6930bb9e79c11d4f48edfb5670d9d9a98941106c06c67cd9bd22f5c64bd0

Analysis: behavioral2

Detonation Overview

Submitted

2022-05-21 01:12

Reported

2022-05-21 01:44

Platform

win10v2004-20220414-en

Max time kernel

124s

Max time network

160s

Command Line

"C:\Users\Admin\AppData\Local\Temp\image.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\lpjnoxch.exe N/A

Drops startup file

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

Enumerates physical storage devices

Processes

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

"C:\Users\Admin\AppData\Local\Temp\image.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\lpjnoxch.exe

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

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 209.197.3.8:80 tcp
US 52.109.8.21:443 tcp
NL 104.110.191.140:80 tcp
US 52.168.117.170:443 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 106.89.54.20.in-addr.arpa udp
FR 2.18.109.224:443 tcp
US 104.18.25.243:80 tcp
US 8.8.8.8:53 0.e.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.4.0.c.0.0.3.0.1.3.0.6.2.ip6.arpa udp

Files

memory/4784-132-0x0000000000000000-mapping.dmp

memory/4672-133-0x0000000000000000-mapping.dmp

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

MD5 8386b787dfff37c3e7bcdcc03a0a7487
SHA1 c20d9e818f912fc4f47ed1e85718c6196b911801
SHA256 25f0420d3551985569fb57497301c7d2f691083d7318d28db5bab2e8a6a0bb85
SHA512 aace70e1d3bd221fffdcfe8649df4e47807b5f2679032866acf31b41814623eab85b6930bb9e79c11d4f48edfb5670d9d9a98941106c06c67cd9bd22f5c64bd0

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

MD5 8386b787dfff37c3e7bcdcc03a0a7487
SHA1 c20d9e818f912fc4f47ed1e85718c6196b911801
SHA256 25f0420d3551985569fb57497301c7d2f691083d7318d28db5bab2e8a6a0bb85
SHA512 aace70e1d3bd221fffdcfe8649df4e47807b5f2679032866acf31b41814623eab85b6930bb9e79c11d4f48edfb5670d9d9a98941106c06c67cd9bd22f5c64bd0