kutaki | 24171c6024628fe1d18a50883ebc19dd86c42eb45aca2b402bd91dc5802c29e9

Analysis

max time kernel
54s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
06-04-2023 20:36

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General

Target

Payment_Copy.exe
Size

2.4MB
MD5

fe87505c13a6a986885193cb177d4607
SHA1

8d11c69147d8fce75c714d0f7de6a26415facda0
SHA256

a7f37926eb21924303d17007e8dd4d87c0bb428d1663a86d24d1ca38442ef845
SHA512

246854ff69ac1d6c6a734f8243c6a9b20ffd00265a00f5c1230db7ba2e73580af920fe8e8a0402c34da658bc8967b557a9be853bde9c4c1319e9c1a420a2a6fb
SSDEEP

49152:hlkWk5cS7a+9XYaQHZehc4mTYJ78V9gyBn4cbfmP/SA8N:3ajJ4Z942KQV9hp4UfmP/SA8

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://treysbeatend.com/laptop/squared.php

http://terebinnahicc.club/sec/kool.txt

Signatures

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

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1072	txlfnrfk.exe

Loads dropped DLL 2 IoCs

pid	Process
628	Payment_Copy.exe
628	Payment_Copy.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
628	Payment_Copy.exe
628	Payment_Copy.exe
628	Payment_Copy.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe
1072	txlfnrfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 2000	628	Payment_Copy.exe	27
PID 628 wrote to memory of 2000	628	Payment_Copy.exe	27
PID 628 wrote to memory of 2000	628	Payment_Copy.exe	27
PID 628 wrote to memory of 2000	628	Payment_Copy.exe	27
PID 628 wrote to memory of 1072	628	Payment_Copy.exe	29
PID 628 wrote to memory of 1072	628	Payment_Copy.exe	29
PID 628 wrote to memory of 1072	628	Payment_Copy.exe	29
PID 628 wrote to memory of 1072	628	Payment_Copy.exe	29

C:\Users\Admin\AppData\Local\Temp\Payment_Copy.exe
"C:\Users\Admin\AppData\Local\Temp\Payment_Copy.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:628
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:2000
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\txlfnrfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\txlfnrfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1072

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\txlfnrfk.exe

Filesize
2.4MB

MD5
fe87505c13a6a986885193cb177d4607

SHA1
8d11c69147d8fce75c714d0f7de6a26415facda0

SHA256
a7f37926eb21924303d17007e8dd4d87c0bb428d1663a86d24d1ca38442ef845

SHA512
246854ff69ac1d6c6a734f8243c6a9b20ffd00265a00f5c1230db7ba2e73580af920fe8e8a0402c34da658bc8967b557a9be853bde9c4c1319e9c1a420a2a6fb

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

Filesize
2.4MB

MD5
fe87505c13a6a986885193cb177d4607

SHA1
8d11c69147d8fce75c714d0f7de6a26415facda0

SHA256
a7f37926eb21924303d17007e8dd4d87c0bb428d1663a86d24d1ca38442ef845

SHA512
246854ff69ac1d6c6a734f8243c6a9b20ffd00265a00f5c1230db7ba2e73580af920fe8e8a0402c34da658bc8967b557a9be853bde9c4c1319e9c1a420a2a6fb

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

Filesize
2.4MB

MD5
fe87505c13a6a986885193cb177d4607

SHA1
8d11c69147d8fce75c714d0f7de6a26415facda0

SHA256
a7f37926eb21924303d17007e8dd4d87c0bb428d1663a86d24d1ca38442ef845

SHA512
246854ff69ac1d6c6a734f8243c6a9b20ffd00265a00f5c1230db7ba2e73580af920fe8e8a0402c34da658bc8967b557a9be853bde9c4c1319e9c1a420a2a6fb

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

Filesize
2.4MB

MD5
fe87505c13a6a986885193cb177d4607

SHA1
8d11c69147d8fce75c714d0f7de6a26415facda0

SHA256
a7f37926eb21924303d17007e8dd4d87c0bb428d1663a86d24d1ca38442ef845

SHA512
246854ff69ac1d6c6a734f8243c6a9b20ffd00265a00f5c1230db7ba2e73580af920fe8e8a0402c34da658bc8967b557a9be853bde9c4c1319e9c1a420a2a6fb

Download Submit