Malware Analysis Report

2024-11-30 11:27

Sample ID 220221-1yd69abac5
Target 73733257bc449d4fed5bd3ffb494a0ce11c6c8c68b58b464761d194bc24ff29b
SHA256 73733257bc449d4fed5bd3ffb494a0ce11c6c8c68b58b464761d194bc24ff29b
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

73733257bc449d4fed5bd3ffb494a0ce11c6c8c68b58b464761d194bc24ff29b

Threat Level: Known bad

The file 73733257bc449d4fed5bd3ffb494a0ce11c6c8c68b58b464761d194bc24ff29b was found to be: Known bad.

Malicious Activity Summary

kutaki keylogger stealer

Kutaki Executable

Kutaki

Kutaki family

Executes dropped EXE

Drops startup file

Loads dropped DLL

Drops file in Windows directory

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-02-21 22:03

Signatures

Kutaki Executable

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

Kutaki family

kutaki

Analysis: behavioral1

Detonation Overview

Submitted

2022-02-21 22:03

Reported

2022-02-21 22:05

Platform

win7-en-20211208

Max time kernel

122s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\tracking details.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\pkznrdch.exe N/A

Drops startup file

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

Loads dropped DLL

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

Processes

C:\Users\Admin\AppData\Local\Temp\tracking details.exe

"C:\Users\Admin\AppData\Local\Temp\tracking details.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\pkznrdch.exe

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

Network

N/A

Files

memory/1568-57-0x0000000076371000-0x0000000076373000-memory.dmp

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

MD5 3c35fca6cb231d20cc04e6d8b2601010
SHA1 aecde409a20bdaa63be0570d5625938e7df50197
SHA256 e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198
SHA512 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77

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

MD5 3c35fca6cb231d20cc04e6d8b2601010
SHA1 aecde409a20bdaa63be0570d5625938e7df50197
SHA256 e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198
SHA512 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77

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

MD5 3c35fca6cb231d20cc04e6d8b2601010
SHA1 aecde409a20bdaa63be0570d5625938e7df50197
SHA256 e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198
SHA512 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77

Analysis: behavioral2

Detonation Overview

Submitted

2022-02-21 22:03

Reported

2022-02-21 22:05

Platform

win10v2004-en-20220113

Max time kernel

151s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\tracking details.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\jbwsmoch.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\jbwsmoch.exe C:\Users\Admin\AppData\Local\Temp\tracking details.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe C:\Users\Admin\AppData\Local\Temp\tracking details.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\WindowsUpdate.log C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.edb C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\ReportingEvents.log C:\Windows\system32\svchost.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\tracking details.exe

"C:\Users\Admin\AppData\Local\Temp\tracking details.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\jbwsmoch.exe

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

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv

Network

Files

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

MD5 3c35fca6cb231d20cc04e6d8b2601010
SHA1 aecde409a20bdaa63be0570d5625938e7df50197
SHA256 e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198
SHA512 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77

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

MD5 3c35fca6cb231d20cc04e6d8b2601010
SHA1 aecde409a20bdaa63be0570d5625938e7df50197
SHA256 e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198
SHA512 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77

memory/3532-136-0x000001D658D60000-0x000001D658D70000-memory.dmp

memory/3532-137-0x000001D659320000-0x000001D659330000-memory.dmp

memory/3532-138-0x000001D65B990000-0x000001D65B994000-memory.dmp