kutaki | 09bcb8ec02584135271310ef3e30265358f52153cda5c12b959b4de60ca5225e

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-03-2024 04:26

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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

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

resource	yara_rule
behavioral1/files/0x000d000000012342-4.dat	family_kutaki

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2184	ulyjwkfk.exe

Loads dropped DLL 2 IoCs

pid	Process
1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.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

pid	Process
2624	DllHost.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
2184	ulyjwkfk.exe
2184	ulyjwkfk.exe
2184	ulyjwkfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1176 wrote to memory of 2196	1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	28
PID 1176 wrote to memory of 2196	1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	28
PID 1176 wrote to memory of 2196	1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	28
PID 1176 wrote to memory of 2196	1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	28
PID 1176 wrote to memory of 2184	1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	30
PID 1176 wrote to memory of 2184	1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	30
PID 1176 wrote to memory of 2184	1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	30
PID 1176 wrote to memory of 2184	1176	026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe	30

C:\Users\Admin\AppData\Local\Temp\026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe
"C:\Users\Admin\AppData\Local\Temp\026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1176
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:2196
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ulyjwkfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ulyjwkfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2184

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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

Filesize
805KB

MD5
ff22cbacd681684e683e3cc90b5eeb49

SHA1
ff242e78602ea1c38bf81830932858188a682040

SHA256
026fd16b5f3c3d9d23e9a9dbd29af68d89e6ed4d8cadc250e00d798fd489d74a

SHA512
d012ee702f1566fd99658bc231ddb5152001c11f665351c6a269293f00a5d9d67ade90e3d342f30a4b709067c59e7d01c4eecf5d418f0ea638d1857f5f0c3b25

Download Submit
memory/2184-39-0x0000000003540000-0x0000000003FFA000-memory.dmp

Filesize
10.7MB

Download
memory/2196-63-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/2624-64-0x00000000001A0000-0x00000000001A2000-memory.dmp

Filesize
8KB

Download
memory/2624-65-0x0000000000320000-0x0000000000321000-memory.dmp

Filesize
4KB

Download
memory/2624-66-0x0000000000320000-0x0000000000321000-memory.dmp

Filesize
4KB

Download