kutaki | 4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e

Analysis

max time kernel
63s
max time network
46s
platform
windows7_x64
resource
win7-20220414-en
submitted
27/05/2022, 23:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe
Size

560KB
MD5

f85699f0c3bca198228a5af7de67ecba
SHA1

56f4a24a398dae4e6e47d62832144673b3486f9f
SHA256

4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e
SHA512

b170c937b015ae6a2ae98ae609f2c6626130681b95d45089d99d9bed9b8fffc54b170b1f69d0d2b64acbf8d3282e08e45b5accbdbbc753dbaa13d6ff510e3582

Score

10^/10

kutaki keylogger stealer

Malware Config

Signatures

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

Kutaki Executable 3 IoCs

resource	yara_rule
behavioral1/files/0x0008000000014a93-59.dat	family_kutaki
behavioral1/files/0x0008000000014a93-60.dat	family_kutaki
behavioral1/files/0x0008000000014a93-62.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
1952	vlikwech.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vlikwech.exe	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vlikwech.exe	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe

Loads dropped DLL 2 IoCs

pid	Process
1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe
1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	vlikwech.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	vlikwech.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 FindShellTrayWindow 1 IoCs

pid	Process
1312	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe
1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe
1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe
1952	vlikwech.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1664 wrote to memory of 1716	1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe	29
PID 1664 wrote to memory of 1716	1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe	29
PID 1664 wrote to memory of 1716	1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe	29
PID 1664 wrote to memory of 1716	1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe	29
PID 1664 wrote to memory of 1952	1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe	31
PID 1664 wrote to memory of 1952	1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe	31
PID 1664 wrote to memory of 1952	1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe	31
PID 1664 wrote to memory of 1952	1664	4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe	31

C:\Users\Admin\AppData\Local\Temp\4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe
"C:\Users\Admin\AppData\Local\Temp\4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:1716
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vlikwech.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vlikwech.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Suspicious use of SetWindowsHookEx
  PID:1952

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1312

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
560KB

MD5
f85699f0c3bca198228a5af7de67ecba

SHA1
56f4a24a398dae4e6e47d62832144673b3486f9f

SHA256
4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e

SHA512
b170c937b015ae6a2ae98ae609f2c6626130681b95d45089d99d9bed9b8fffc54b170b1f69d0d2b64acbf8d3282e08e45b5accbdbbc753dbaa13d6ff510e3582

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

Filesize
560KB

MD5
f85699f0c3bca198228a5af7de67ecba

SHA1
56f4a24a398dae4e6e47d62832144673b3486f9f

SHA256
4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e

SHA512
b170c937b015ae6a2ae98ae609f2c6626130681b95d45089d99d9bed9b8fffc54b170b1f69d0d2b64acbf8d3282e08e45b5accbdbbc753dbaa13d6ff510e3582

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

Filesize
560KB

MD5
f85699f0c3bca198228a5af7de67ecba

SHA1
56f4a24a398dae4e6e47d62832144673b3486f9f

SHA256
4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e

SHA512
b170c937b015ae6a2ae98ae609f2c6626130681b95d45089d99d9bed9b8fffc54b170b1f69d0d2b64acbf8d3282e08e45b5accbdbbc753dbaa13d6ff510e3582

Download Submit
memory/1664-56-0x0000000075941000-0x0000000075943000-memory.dmp

Filesize
8KB

Download