kutaki | d2f8b78d8bc87cb6a703b593213573c850d37c146775cdc3bff274d1c929de34

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
01-05-2023 15:38

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General

Target

217edd398f416851e2cbc52f868735c9.exe
Size

521KB
MD5

217edd398f416851e2cbc52f868735c9
SHA1

9bc4c13a5747101b3ecefcc9bbc6e558bb97adec
SHA256

d2f8b78d8bc87cb6a703b593213573c850d37c146775cdc3bff274d1c929de34
SHA512

4d1d7a9aea4fea33495048a28a3ea3d90c6a1c2ef470588feb033fe6be8ab40d0d846a03181521a6f510fe918236b62099bdd64973b0ce841b13c9ea8e7b05d1
SSDEEP

12288:K6LK18Gnl3Pw9Yi46A9jmP/uhu/yMS08CkntxYRTL:K6L5Gnl3HfmP/UDMS08Ckn3C

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://newbosslink.xyz/baba/new4.php

Signatures

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

Kutaki Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023151-138.dat	family_kutaki
behavioral2/files/0x0006000000023151-139.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	cmd.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\przwlgfk.exe	217edd398f416851e2cbc52f868735c9.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\przwlgfk.exe	217edd398f416851e2cbc52f868735c9.exe

Executes dropped EXE 1 IoCs

pid	Process
508	przwlgfk.exe

Drops file in Windows directory 1 IoCs

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3516	mspaint.exe
3516	mspaint.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2772	217edd398f416851e2cbc52f868735c9.exe
2772	217edd398f416851e2cbc52f868735c9.exe
2772	217edd398f416851e2cbc52f868735c9.exe
508	przwlgfk.exe
508	przwlgfk.exe
508	przwlgfk.exe
3516	mspaint.exe
3516	mspaint.exe
3516	mspaint.exe
3516	mspaint.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 116	2772	217edd398f416851e2cbc52f868735c9.exe	85
PID 2772 wrote to memory of 116	2772	217edd398f416851e2cbc52f868735c9.exe	85
PID 2772 wrote to memory of 116	2772	217edd398f416851e2cbc52f868735c9.exe	85
PID 2772 wrote to memory of 508	2772	217edd398f416851e2cbc52f868735c9.exe	87
PID 2772 wrote to memory of 508	2772	217edd398f416851e2cbc52f868735c9.exe	87
PID 2772 wrote to memory of 508	2772	217edd398f416851e2cbc52f868735c9.exe	87
PID 116 wrote to memory of 3516	116	cmd.exe	88
PID 116 wrote to memory of 3516	116	cmd.exe	88
PID 116 wrote to memory of 3516	116	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\217edd398f416851e2cbc52f868735c9.exe
"C:\Users\Admin\AppData\Local\Temp\217edd398f416851e2cbc52f868735c9.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2772
- 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:116
- - 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:3516
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\przwlgfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\przwlgfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:508

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:1776

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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\przwlgfk.exe

Filesize
521KB

MD5
217edd398f416851e2cbc52f868735c9

SHA1
9bc4c13a5747101b3ecefcc9bbc6e558bb97adec

SHA256
d2f8b78d8bc87cb6a703b593213573c850d37c146775cdc3bff274d1c929de34

SHA512
4d1d7a9aea4fea33495048a28a3ea3d90c6a1c2ef470588feb033fe6be8ab40d0d846a03181521a6f510fe918236b62099bdd64973b0ce841b13c9ea8e7b05d1

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

Filesize
521KB

MD5
217edd398f416851e2cbc52f868735c9

SHA1
9bc4c13a5747101b3ecefcc9bbc6e558bb97adec

SHA256
d2f8b78d8bc87cb6a703b593213573c850d37c146775cdc3bff274d1c929de34

SHA512
4d1d7a9aea4fea33495048a28a3ea3d90c6a1c2ef470588feb033fe6be8ab40d0d846a03181521a6f510fe918236b62099bdd64973b0ce841b13c9ea8e7b05d1

Download Submit