Malware Analysis Report

2024-11-13 14:55

Sample ID 220724-shf2xagce2
Target 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
SHA256 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
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

80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d

Threat Level: Known bad

The file 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d was found to be: Known bad.

Malicious Activity Summary

kutaki keylogger stealer

Kutaki Executable

Kutaki family

Kutaki

Executes dropped EXE

Loads dropped DLL

Drops startup file

Maps connected drives based on registry

Enumerates physical storage devices

Modifies Internet Explorer settings

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-07-24 15:07

Signatures

Kutaki Executable

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

Kutaki family

kutaki

Analysis: behavioral1

Detonation Overview

Submitted

2022-07-24 15:07

Reported

2022-07-25 10:07

Platform

win7-20220715-en

Max time kernel

150s

Max time network

49s

Command Line

"C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.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
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\dqoytich.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dqoytich.exe C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dqoytich.exe C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.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\dqoytich.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\dqoytich.exe N/A

Enumerates physical storage devices

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Main C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Main C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dqoytich.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2012 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe C:\Windows\SysWOW64\cmd.exe
PID 2012 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe C:\Windows\SysWOW64\cmd.exe
PID 2012 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe C:\Windows\SysWOW64\cmd.exe
PID 2012 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe C:\Windows\SysWOW64\cmd.exe
PID 2012 wrote to memory of 944 N/A C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dqoytich.exe
PID 2012 wrote to memory of 944 N/A C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dqoytich.exe
PID 2012 wrote to memory of 944 N/A C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dqoytich.exe
PID 2012 wrote to memory of 944 N/A C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dqoytich.exe

Processes

C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe

"C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.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\dqoytich.exe

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

Network

N/A

Files

memory/2012-56-0x0000000075791000-0x0000000075793000-memory.dmp

memory/2032-57-0x0000000000000000-mapping.dmp

memory/944-61-0x0000000000000000-mapping.dmp

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

MD5 99e9541ed3ea8e813d79e1158579cd33
SHA1 0bb3144b8f639beb54dcf7800b7e0b46f7ed60b7
SHA256 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
SHA512 948eb85658d3a2dd485d9340cd770147b28952583f353d8027ca69547b438cea44df2fead84d2cb3dada36bb14f3744132bcf172daa7e4dfeee6b059b8119e8b

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

MD5 99e9541ed3ea8e813d79e1158579cd33
SHA1 0bb3144b8f639beb54dcf7800b7e0b46f7ed60b7
SHA256 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
SHA512 948eb85658d3a2dd485d9340cd770147b28952583f353d8027ca69547b438cea44df2fead84d2cb3dada36bb14f3744132bcf172daa7e4dfeee6b059b8119e8b

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

MD5 99e9541ed3ea8e813d79e1158579cd33
SHA1 0bb3144b8f639beb54dcf7800b7e0b46f7ed60b7
SHA256 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
SHA512 948eb85658d3a2dd485d9340cd770147b28952583f353d8027ca69547b438cea44df2fead84d2cb3dada36bb14f3744132bcf172daa7e4dfeee6b059b8119e8b

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

MD5 99e9541ed3ea8e813d79e1158579cd33
SHA1 0bb3144b8f639beb54dcf7800b7e0b46f7ed60b7
SHA256 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
SHA512 948eb85658d3a2dd485d9340cd770147b28952583f353d8027ca69547b438cea44df2fead84d2cb3dada36bb14f3744132bcf172daa7e4dfeee6b059b8119e8b

Analysis: behavioral2

Detonation Overview

Submitted

2022-07-24 15:07

Reported

2022-07-25 10:09

Platform

win10v2004-20220721-en

Max time kernel

172s

Max time network

172s

Command Line

"C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.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\xwdjmsch.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xwdjmsch.exe C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xwdjmsch.exe C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.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\xwdjmsch.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\xwdjmsch.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe

"C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.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\xwdjmsch.exe

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

Network

Country Destination Domain Proto
NL 40.126.32.136:443 tcp
US 204.79.197.203:80 tcp
US 8.8.8.8:53 151.122.125.40.in-addr.arpa udp
NL 88.221.144.193:80 tcp
US 8.8.8.8:53 d.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.5.0.8.0.0.3.0.1.3.0.6.2.ip6.arpa udp
US 13.89.179.10:443 tcp

Files

memory/5116-132-0x0000000000000000-mapping.dmp

memory/2980-133-0x0000000000000000-mapping.dmp

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

MD5 99e9541ed3ea8e813d79e1158579cd33
SHA1 0bb3144b8f639beb54dcf7800b7e0b46f7ed60b7
SHA256 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
SHA512 948eb85658d3a2dd485d9340cd770147b28952583f353d8027ca69547b438cea44df2fead84d2cb3dada36bb14f3744132bcf172daa7e4dfeee6b059b8119e8b

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

MD5 99e9541ed3ea8e813d79e1158579cd33
SHA1 0bb3144b8f639beb54dcf7800b7e0b46f7ed60b7
SHA256 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
SHA512 948eb85658d3a2dd485d9340cd770147b28952583f353d8027ca69547b438cea44df2fead84d2cb3dada36bb14f3744132bcf172daa7e4dfeee6b059b8119e8b