kutaki | 6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f

Analysis

max time kernel
149s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26-02-2024 11:36

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General

Target

6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe
Size

573KB
MD5

111d37dd39bb7f73b76eb13e22a16178
SHA1

c358557e24b87ae758606d707763bfa95da88a61
SHA256

6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f
SHA512

31b0424ce110261af02c23c94a60659301ba6eacc4223578b04fe1fc815f4eb41f7d899f6322e642a6df62e88580a4d70131a01500ebe12b9ffa46d9e7232bf4
SSDEEP

12288:Ua4NFT8ElW46A9jmP/uhu/yMS08CkntxYRtqL:J6YahfmP/UDMS08Ckn3v

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/0x000d0000000122cf-10.dat	family_kutaki

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ouusxkfk.exe	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ouusxkfk.exe	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe

Executes dropped EXE 1 IoCs

pid	Process
1948	ouusxkfk.exe

Loads dropped DLL 2 IoCs

pid	Process
1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe
1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.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
2804	DllHost.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe
1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe
1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe
1948	ouusxkfk.exe
1948	ouusxkfk.exe
1948	ouusxkfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 2496	1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe	28
PID 1132 wrote to memory of 2496	1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe	28
PID 1132 wrote to memory of 2496	1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe	28
PID 1132 wrote to memory of 2496	1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe	28
PID 1132 wrote to memory of 1948	1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe	30
PID 1132 wrote to memory of 1948	1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe	30
PID 1132 wrote to memory of 1948	1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe	30
PID 1132 wrote to memory of 1948	1132	6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe	30

C:\Users\Admin\AppData\Local\Temp\6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe
"C:\Users\Admin\AppData\Local\Temp\6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:2496
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ouusxkfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ouusxkfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1948

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2804

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

Replay Monitor

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Downloads

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

Filesize
573KB

MD5
111d37dd39bb7f73b76eb13e22a16178

SHA1
c358557e24b87ae758606d707763bfa95da88a61

SHA256
6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f

SHA512
31b0424ce110261af02c23c94a60659301ba6eacc4223578b04fe1fc815f4eb41f7d899f6322e642a6df62e88580a4d70131a01500ebe12b9ffa46d9e7232bf4

Download Submit
memory/2496-62-0x0000000000610000-0x0000000000612000-memory.dmp

Filesize
8KB

Download
memory/2804-63-0x00000000001B0000-0x00000000001B2000-memory.dmp

Filesize
8KB

Download
memory/2804-64-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/2804-65-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download