kutaki | 86f2f67706a120d121c11a372895ab615bf2bfb0cba091a850e17ccd8d8855ad

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

C2

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

Signatures

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

Kutaki Executable 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dbxvibfk.exe	family_kutaki
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dbxvibfk.exe	family_kutaki

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

cmd.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000\Control Panel\International\Geo\Nation cmd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000\Control Panel\International\Geo\Nation	cmd.exe

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\dbxvibfk.exe	Tax Payment Confirmation.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dbxvibfk.exe	Tax Payment Confirmation.exe

Executes dropped EXE 1 IoCs

Processes:

dbxvibfk.exe

pid process

4652 dbxvibfk.exe
Drops file in Windows directory 1 IoCs

Processes:

mspaint.exe

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log mspaint.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

cmd.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000_Classes\Local Settings cmd.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

mspaint.exe

pid process

3000 mspaint.exe
3000 mspaint.exe

pid	process
4652	dbxvibfk.exe

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	mspaint.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000_Classes\Local Settings	cmd.exe

pid	process
3000	mspaint.exe
3000	mspaint.exe

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

Tax Payment Confirmation.exedbxvibfk.exemspaint.exe

pid	process
2796	Tax Payment Confirmation.exe
2796	Tax Payment Confirmation.exe
2796	Tax Payment Confirmation.exe
4652	dbxvibfk.exe
4652	dbxvibfk.exe
4652	dbxvibfk.exe
3000	mspaint.exe
3000	mspaint.exe
3000	mspaint.exe
3000	mspaint.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Tax Payment Confirmation.execmd.exe

description	pid	process	target process
PID 2796 wrote to memory of 1740	2796	Tax Payment Confirmation.exe	cmd.exe
PID 2796 wrote to memory of 1740	2796	Tax Payment Confirmation.exe	cmd.exe
PID 2796 wrote to memory of 1740	2796	Tax Payment Confirmation.exe	cmd.exe
PID 2796 wrote to memory of 4652	2796	Tax Payment Confirmation.exe	dbxvibfk.exe
PID 2796 wrote to memory of 4652	2796	Tax Payment Confirmation.exe	dbxvibfk.exe
PID 2796 wrote to memory of 4652	2796	Tax Payment Confirmation.exe	dbxvibfk.exe
PID 1740 wrote to memory of 3000	1740	cmd.exe	mspaint.exe
PID 1740 wrote to memory of 3000	1740	cmd.exe	mspaint.exe
PID 1740 wrote to memory of 3000	1740	cmd.exe	mspaint.exe

C:\Users\Admin\AppData\Local\Temp\Tax Payment Confirmation.exe
"C:\Users\Admin\AppData\Local\Temp\Tax Payment Confirmation.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1740
- - C:\Windows\SysWOW64\mspaint.exe
    "C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp"
    3⤵
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:3000
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dbxvibfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dbxvibfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4652

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:5036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
501KB

MD5
229542167bc737c7ceec0394cb8eae67

SHA1
b1fdf16782bee715faf2fe7f1581272793708e08

SHA256
09caf68ad8cb1a459675913732e7191285d03e7b83e244b5ddce69e0b97c1fc5

SHA512
7d8995c724c598de8a05e7f5ea2e50f1583dcfc5611143ac4290bc8a77eeeecf3e3fd55acc687b92bc4745f7e194487f0c21504a695b95dcb9eaebb048da5d5d

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

Filesize
501KB

MD5
229542167bc737c7ceec0394cb8eae67

SHA1
b1fdf16782bee715faf2fe7f1581272793708e08

SHA256
09caf68ad8cb1a459675913732e7191285d03e7b83e244b5ddce69e0b97c1fc5

SHA512
7d8995c724c598de8a05e7f5ea2e50f1583dcfc5611143ac4290bc8a77eeeecf3e3fd55acc687b92bc4745f7e194487f0c21504a695b95dcb9eaebb048da5d5d

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads