kutaki | 86f2f67706a120d121c11a372895ab615bf2bfb0cba091a850e17ccd8d8855ad

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
07-11-2023 06:21

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General

Target

Tax Payment Confirmation.exe
Size

501KB
MD5

229542167bc737c7ceec0394cb8eae67
SHA1

b1fdf16782bee715faf2fe7f1581272793708e08
SHA256

09caf68ad8cb1a459675913732e7191285d03e7b83e244b5ddce69e0b97c1fc5
SHA512

7d8995c724c598de8a05e7f5ea2e50f1583dcfc5611143ac4290bc8a77eeeecf3e3fd55acc687b92bc4745f7e194487f0c21504a695b95dcb9eaebb048da5d5d
SSDEEP

12288:gYcs+XKy/AZe+e9AP8LP810o4HfyNQlQj0DunOq0Mte9oIopkyd+wMeMIC10pqTD:gYcs+XKy/AZeJ9AP8LP810o4HfyNQlQS

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://linkwotowoto.club/new/two.php

Signatures

Kutaki
Information stealer and keylogger that hides inside legitimate Visual Basic applications.
stealer keylogger kutaki

Kutaki Executable 4 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x000d000000012265-4.dat	family_kutaki
behavioral1/files/0x000d000000012265-6.dat	family_kutaki
behavioral1/files/0x000d000000012265-10.dat	family_kutaki
behavioral1/files/0x000d000000012265-8.dat	family_kutaki

Drops startup file 2 IoCs

Processes:

Tax Payment Confirmation.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ntmgabfk.exe	Tax Payment Confirmation.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ntmgabfk.exe	Tax Payment Confirmation.exe

Executes dropped EXE 1 IoCs

Processes:

ntmgabfk.exe

pid	Process
2772	ntmgabfk.exe

Loads dropped DLL 2 IoCs

Processes:

Tax Payment Confirmation.exe

pid	Process
2364	Tax Payment Confirmation.exe
2364	Tax Payment Confirmation.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

DllHost.exe

pid	Process
3068	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

Processes:

Tax Payment Confirmation.exentmgabfk.exe

pid	Process
2364	Tax Payment Confirmation.exe
2364	Tax Payment Confirmation.exe
2364	Tax Payment Confirmation.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe
2772	ntmgabfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Tax Payment Confirmation.exe

description	pid	Process	procid_target
PID 2364 wrote to memory of 2712	2364	Tax Payment Confirmation.exe	29
PID 2364 wrote to memory of 2712	2364	Tax Payment Confirmation.exe	29
PID 2364 wrote to memory of 2712	2364	Tax Payment Confirmation.exe	29
PID 2364 wrote to memory of 2712	2364	Tax Payment Confirmation.exe	29
PID 2364 wrote to memory of 2772	2364	Tax Payment Confirmation.exe	31
PID 2364 wrote to memory of 2772	2364	Tax Payment Confirmation.exe	31
PID 2364 wrote to memory of 2772	2364	Tax Payment Confirmation.exe	31
PID 2364 wrote to memory of 2772	2364	Tax Payment Confirmation.exe	31

C:\Users\Admin\AppData\Local\Temp\Tax Payment Confirmation.exe
"C:\Users\Admin\AppData\Local\Temp\Tax Payment Confirmation.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:2712
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ntmgabfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ntmgabfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2772

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:3068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
501KB

MD5
229542167bc737c7ceec0394cb8eae67

SHA1
b1fdf16782bee715faf2fe7f1581272793708e08

SHA256
09caf68ad8cb1a459675913732e7191285d03e7b83e244b5ddce69e0b97c1fc5

SHA512
7d8995c724c598de8a05e7f5ea2e50f1583dcfc5611143ac4290bc8a77eeeecf3e3fd55acc687b92bc4745f7e194487f0c21504a695b95dcb9eaebb048da5d5d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ntmgabfk.exe

Filesize
501KB

MD5
229542167bc737c7ceec0394cb8eae67

SHA1
b1fdf16782bee715faf2fe7f1581272793708e08

SHA256
09caf68ad8cb1a459675913732e7191285d03e7b83e244b5ddce69e0b97c1fc5

SHA512
7d8995c724c598de8a05e7f5ea2e50f1583dcfc5611143ac4290bc8a77eeeecf3e3fd55acc687b92bc4745f7e194487f0c21504a695b95dcb9eaebb048da5d5d

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ntmgabfk.exe

Filesize
501KB

MD5
229542167bc737c7ceec0394cb8eae67

SHA1
b1fdf16782bee715faf2fe7f1581272793708e08

SHA256
09caf68ad8cb1a459675913732e7191285d03e7b83e244b5ddce69e0b97c1fc5

SHA512
7d8995c724c598de8a05e7f5ea2e50f1583dcfc5611143ac4290bc8a77eeeecf3e3fd55acc687b92bc4745f7e194487f0c21504a695b95dcb9eaebb048da5d5d

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ntmgabfk.exe

Filesize
501KB

MD5
229542167bc737c7ceec0394cb8eae67

SHA1
b1fdf16782bee715faf2fe7f1581272793708e08

SHA256
09caf68ad8cb1a459675913732e7191285d03e7b83e244b5ddce69e0b97c1fc5

SHA512
7d8995c724c598de8a05e7f5ea2e50f1583dcfc5611143ac4290bc8a77eeeecf3e3fd55acc687b92bc4745f7e194487f0c21504a695b95dcb9eaebb048da5d5d

Download Submit
memory/2712-62-0x00000000022A0000-0x00000000022A2000-memory.dmp

Filesize
8KB

Download
memory/3068-63-0x0000000000160000-0x0000000000162000-memory.dmp

Filesize
8KB

Download
memory/3068-64-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download