kutaki | 5945debf94de6bbe53652b019c7f8be2d8bcee36cd0059ca46a2002ccc70c0c2

General

Target

NEAS.237060068077322d5f33bb309259a5c0.exe
Size

693KB
MD5

237060068077322d5f33bb309259a5c0
SHA1

6e480d71feab775e20b16f4aa80fd4bab8d2b65f
SHA256

5945debf94de6bbe53652b019c7f8be2d8bcee36cd0059ca46a2002ccc70c0c2
SHA512

c2660dc7e38bce83596bfb0d0058e98ae8300e08a3981e0d732d0539d49140487ca6f46ab07ffbaa37f8594b115757d25cb16156b214f408caaa2875b7bf58ed
SSDEEP

12288:2zU8Mu2wf+dBzOxgm46A9jmP/uhu/yMS08CkntxYRZL:2w8t2wf+dBTfmP/UDMS08Ckn3M

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 4 IoCs

Processes:

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

Drops startup file 2 IoCs

Processes:

NEAS.237060068077322d5f33bb309259a5c0.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vtoargfk.exe	NEAS.237060068077322d5f33bb309259a5c0.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vtoargfk.exe	NEAS.237060068077322d5f33bb309259a5c0.exe

Executes dropped EXE 1 IoCs

Processes:

vtoargfk.exe

pid process

2600 vtoargfk.exe
Loads dropped DLL 2 IoCs

Processes:

NEAS.237060068077322d5f33bb309259a5c0.exe

pid process

2028 NEAS.237060068077322d5f33bb309259a5c0.exe
2028 NEAS.237060068077322d5f33bb309259a5c0.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

2656 DllHost.exe

pid	process
2600	vtoargfk.exe

pid	process
2656	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

Processes:

NEAS.237060068077322d5f33bb309259a5c0.exevtoargfk.exe

pid	process
2028	NEAS.237060068077322d5f33bb309259a5c0.exe
2028	NEAS.237060068077322d5f33bb309259a5c0.exe
2028	NEAS.237060068077322d5f33bb309259a5c0.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe
2600	vtoargfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

NEAS.237060068077322d5f33bb309259a5c0.exe

description	pid	process	target process
PID 2028 wrote to memory of 2380	2028	NEAS.237060068077322d5f33bb309259a5c0.exe	cmd.exe
PID 2028 wrote to memory of 2380	2028	NEAS.237060068077322d5f33bb309259a5c0.exe	cmd.exe
PID 2028 wrote to memory of 2380	2028	NEAS.237060068077322d5f33bb309259a5c0.exe	cmd.exe
PID 2028 wrote to memory of 2380	2028	NEAS.237060068077322d5f33bb309259a5c0.exe	cmd.exe
PID 2028 wrote to memory of 2600	2028	NEAS.237060068077322d5f33bb309259a5c0.exe	vtoargfk.exe
PID 2028 wrote to memory of 2600	2028	NEAS.237060068077322d5f33bb309259a5c0.exe	vtoargfk.exe
PID 2028 wrote to memory of 2600	2028	NEAS.237060068077322d5f33bb309259a5c0.exe	vtoargfk.exe
PID 2028 wrote to memory of 2600	2028	NEAS.237060068077322d5f33bb309259a5c0.exe	vtoargfk.exe

C:\Users\Admin\AppData\Local\Temp\NEAS.237060068077322d5f33bb309259a5c0.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.237060068077322d5f33bb309259a5c0.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:2380
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vtoargfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vtoargfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2600

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\vtoargfk.exe

Filesize
693KB

MD5
237060068077322d5f33bb309259a5c0

SHA1
6e480d71feab775e20b16f4aa80fd4bab8d2b65f

SHA256
5945debf94de6bbe53652b019c7f8be2d8bcee36cd0059ca46a2002ccc70c0c2

SHA512
c2660dc7e38bce83596bfb0d0058e98ae8300e08a3981e0d732d0539d49140487ca6f46ab07ffbaa37f8594b115757d25cb16156b214f408caaa2875b7bf58ed

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

Filesize
693KB

MD5
237060068077322d5f33bb309259a5c0

SHA1
6e480d71feab775e20b16f4aa80fd4bab8d2b65f

SHA256
5945debf94de6bbe53652b019c7f8be2d8bcee36cd0059ca46a2002ccc70c0c2

SHA512
c2660dc7e38bce83596bfb0d0058e98ae8300e08a3981e0d732d0539d49140487ca6f46ab07ffbaa37f8594b115757d25cb16156b214f408caaa2875b7bf58ed

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

Filesize
693KB

MD5
237060068077322d5f33bb309259a5c0

SHA1
6e480d71feab775e20b16f4aa80fd4bab8d2b65f

SHA256
5945debf94de6bbe53652b019c7f8be2d8bcee36cd0059ca46a2002ccc70c0c2

SHA512
c2660dc7e38bce83596bfb0d0058e98ae8300e08a3981e0d732d0539d49140487ca6f46ab07ffbaa37f8594b115757d25cb16156b214f408caaa2875b7bf58ed

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

Filesize
693KB

MD5
237060068077322d5f33bb309259a5c0

SHA1
6e480d71feab775e20b16f4aa80fd4bab8d2b65f

SHA256
5945debf94de6bbe53652b019c7f8be2d8bcee36cd0059ca46a2002ccc70c0c2

SHA512
c2660dc7e38bce83596bfb0d0058e98ae8300e08a3981e0d732d0539d49140487ca6f46ab07ffbaa37f8594b115757d25cb16156b214f408caaa2875b7bf58ed

Download Submit
memory/2380-63-0x0000000000450000-0x0000000000452000-memory.dmp

Filesize
8KB

Download
memory/2600-44-0x00000000030C0000-0x0000000003B7A000-memory.dmp

Filesize
10.7MB

Download
memory/2656-64-0x00000000001A0000-0x00000000001A2000-memory.dmp

Filesize
8KB

Download
memory/2656-65-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/2656-66-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads