Malware Analysis Report

2024-11-15 07:18

Sample ID 220625-gsdhzsbab9
Target 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
SHA256 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
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

3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0

Threat Level: Known bad

The file 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0 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

2022-06-25 06:03

Signatures

Kutaki Executable

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

Kutaki family

kutaki

Analysis: behavioral1

Detonation Overview

Submitted

2022-06-25 06:03

Reported

2022-06-25 06:42

Platform

win7-20220414-en

Max time kernel

168s

Max time network

46s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.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\dzidfich.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dzidfich.exe C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dzidfich.exe C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 948 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe C:\Windows\SysWOW64\cmd.exe
PID 948 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe C:\Windows\SysWOW64\cmd.exe
PID 948 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe C:\Windows\SysWOW64\cmd.exe
PID 948 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe C:\Windows\SysWOW64\cmd.exe
PID 948 wrote to memory of 320 N/A C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dzidfich.exe
PID 948 wrote to memory of 320 N/A C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dzidfich.exe
PID 948 wrote to memory of 320 N/A C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dzidfich.exe
PID 948 wrote to memory of 320 N/A C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dzidfich.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe

"C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.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\dzidfich.exe

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

Network

N/A

Files

memory/948-56-0x00000000769D1000-0x00000000769D3000-memory.dmp

memory/1348-57-0x0000000000000000-mapping.dmp

memory/320-60-0x0000000000000000-mapping.dmp

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

MD5 03d14d25935aabae662a09db5146ea35
SHA1 e75ffa7ef6be023be366f95dedffff934e890f06
SHA256 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
SHA512 3f1cd8d0032f49a5a724479f45c3767910cfb9196aeec051a3e162af99631814cfb7fa9729274c091d6ca49a3db87a3f53d3d01eb72eb573f771eaca5617f61a

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

MD5 03d14d25935aabae662a09db5146ea35
SHA1 e75ffa7ef6be023be366f95dedffff934e890f06
SHA256 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
SHA512 3f1cd8d0032f49a5a724479f45c3767910cfb9196aeec051a3e162af99631814cfb7fa9729274c091d6ca49a3db87a3f53d3d01eb72eb573f771eaca5617f61a

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

MD5 03d14d25935aabae662a09db5146ea35
SHA1 e75ffa7ef6be023be366f95dedffff934e890f06
SHA256 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
SHA512 3f1cd8d0032f49a5a724479f45c3767910cfb9196aeec051a3e162af99631814cfb7fa9729274c091d6ca49a3db87a3f53d3d01eb72eb573f771eaca5617f61a

Analysis: behavioral2

Detonation Overview

Submitted

2022-06-25 06:03

Reported

2022-06-25 06:42

Platform

win10v2004-20220414-en

Max time kernel

193s

Max time network

213s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.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\pjifuych.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\pjifuych.exe C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pjifuych.exe C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.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\pjifuych.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\pjifuych.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.exe

"C:\Users\Admin\AppData\Local\Temp\3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0.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\pjifuych.exe

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

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
US 216.246.112.165:443 tcp
US 216.246.112.165:443 tcp
US 209.197.3.8:80 tcp
US 20.189.173.4:443 tcp
NL 104.123.41.162:80 tcp

Files

memory/4792-132-0x0000000000000000-mapping.dmp

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

MD5 03d14d25935aabae662a09db5146ea35
SHA1 e75ffa7ef6be023be366f95dedffff934e890f06
SHA256 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
SHA512 3f1cd8d0032f49a5a724479f45c3767910cfb9196aeec051a3e162af99631814cfb7fa9729274c091d6ca49a3db87a3f53d3d01eb72eb573f771eaca5617f61a

memory/4972-133-0x0000000000000000-mapping.dmp

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

MD5 03d14d25935aabae662a09db5146ea35
SHA1 e75ffa7ef6be023be366f95dedffff934e890f06
SHA256 3a3ea1848d9834a0959b57b6225cc5730b3d576e8a73bdc129622a12d6e51bc0
SHA512 3f1cd8d0032f49a5a724479f45c3767910cfb9196aeec051a3e162af99631814cfb7fa9729274c091d6ca49a3db87a3f53d3d01eb72eb573f771eaca5617f61a