kutaki | 09bcb8ec02584135271310ef3e30265358f52153cda5c12b959b4de60ca5225e

General

Target

026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
Size

805KB
MD5

ff22cbacd681684e683e3cc90b5eeb49
SHA1

ff242e78602ea1c38bf81830932858188a682040
SHA256

026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a
SHA512

d012ee702f1566fd99658bc231ddb5152001c11f665351c6a269293f00a5d9d67ade90e3d342f30a4b709067c59e7d01c4eecf5d418f0ea638d1857f5f0c3b25
SSDEEP

12288:cwU/v0YM3/BJzGG6bBiNH46A9jmP/uhu/yMS08CkntxYRjL:BK2BN6BiNYfmP/UDMS08Ckn3W

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 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ksywzvfk.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-1-5-21-776854024-226333264-2052258302-1000\Control Panel\International\Geo\Nation cmd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-776854024-226333264-2052258302-1000\Control Panel\International\Geo\Nation	cmd.exe

Drops startup file 2 IoCs

Processes:

026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ksywzvfk.exe	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ksywzvfk.exe	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe

Executes dropped EXE 1 IoCs

Processes:

ksywzvfk.exe

pid process

4568 ksywzvfk.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-1-5-21-776854024-226333264-2052258302-1000_Classes\Local Settings cmd.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

mspaint.exe

pid process

4000 mspaint.exe
4000 mspaint.exe

pid	process
4568	ksywzvfk.exe

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

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-776854024-226333264-2052258302-1000_Classes\Local Settings	cmd.exe

pid	process
4000	mspaint.exe
4000	mspaint.exe

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exeksywzvfk.exemspaint.exe

pid	process
348	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
348	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
348	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
4568	ksywzvfk.exe
4568	ksywzvfk.exe
4568	ksywzvfk.exe
4000	mspaint.exe
4000	mspaint.exe
4000	mspaint.exe
4000	mspaint.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.execmd.exe

description	pid	process	target process
PID 348 wrote to memory of 2660	348	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	cmd.exe
PID 348 wrote to memory of 2660	348	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	cmd.exe
PID 348 wrote to memory of 2660	348	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	cmd.exe
PID 348 wrote to memory of 4568	348	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	ksywzvfk.exe
PID 348 wrote to memory of 4568	348	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	ksywzvfk.exe
PID 348 wrote to memory of 4568	348	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	ksywzvfk.exe
PID 2660 wrote to memory of 4000	2660	cmd.exe	mspaint.exe
PID 2660 wrote to memory of 4000	2660	cmd.exe	mspaint.exe
PID 2660 wrote to memory of 4000	2660	cmd.exe	mspaint.exe

C:\Users\Admin\AppData\Local\Temp\026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
"C:\Users\Admin\AppData\Local\Temp\026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:348
- 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:2660
- - 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:4000
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ksywzvfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ksywzvfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4568

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:780

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\ksywzvfk.exe

Filesize
805KB

MD5
ff22cbacd681684e683e3cc90b5eeb49

SHA1
ff242e78602ea1c38bf81830932858188a682040

SHA256
026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a

SHA512
d012ee702f1566fd99658bc231ddb5152001c11f665351c6a269293f00a5d9d67ade90e3d342f30a4b709067c59e7d01c4eecf5d418f0ea638d1857f5f0c3b25

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads