kutaki | e539bda619e24bb25719a6d5cf637643965d2561cd35ce24543d6a2f61963cf8

Analysis

max time kernel
144s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
08-03-2024 13:38

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General

Target

bb66a2b312b016cf0fa6cc05043f87ba.exe
Size

376KB
MD5

bb66a2b312b016cf0fa6cc05043f87ba
SHA1

0921f77b7bde2a380056d0a279c87dcc66c047a7
SHA256

e539bda619e24bb25719a6d5cf637643965d2561cd35ce24543d6a2f61963cf8
SHA512

21099c4190e790c09eb4b83d4070a7699395b7ff7f8743bf27ea5a6dbe38eb40a4d7fa76e8b5f1f3878c75666d7fca95d80bc25e848e1b23482692efee8d83eb
SSDEEP

6144:gIaXScb1S4GlA9jmHv/VCSY3hw9lMbk6u1QMS0y+lqiHTonWryFDYRF:T46A9jmP/uhu/yMS08CkntxYRF

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://sdaskmda.club/papa/love.php

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

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/0x000c000000012671-4.dat	family_kutaki

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ddrubych.exe	bb66a2b312b016cf0fa6cc05043f87ba.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ddrubych.exe	bb66a2b312b016cf0fa6cc05043f87ba.exe

Executes dropped EXE 1 IoCs

pid	Process
2528	ddrubych.exe

Loads dropped DLL 2 IoCs

pid	Process
1948	bb66a2b312b016cf0fa6cc05043f87ba.exe
1948	bb66a2b312b016cf0fa6cc05043f87ba.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Internet Explorer\Main	ddrubych.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2492	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
1948	bb66a2b312b016cf0fa6cc05043f87ba.exe
1948	bb66a2b312b016cf0fa6cc05043f87ba.exe
1948	bb66a2b312b016cf0fa6cc05043f87ba.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe
2528	ddrubych.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 2608	1948	bb66a2b312b016cf0fa6cc05043f87ba.exe	29
PID 1948 wrote to memory of 2608	1948	bb66a2b312b016cf0fa6cc05043f87ba.exe	29
PID 1948 wrote to memory of 2608	1948	bb66a2b312b016cf0fa6cc05043f87ba.exe	29
PID 1948 wrote to memory of 2608	1948	bb66a2b312b016cf0fa6cc05043f87ba.exe	29
PID 1948 wrote to memory of 2528	1948	bb66a2b312b016cf0fa6cc05043f87ba.exe	31
PID 1948 wrote to memory of 2528	1948	bb66a2b312b016cf0fa6cc05043f87ba.exe	31
PID 1948 wrote to memory of 2528	1948	bb66a2b312b016cf0fa6cc05043f87ba.exe	31
PID 1948 wrote to memory of 2528	1948	bb66a2b312b016cf0fa6cc05043f87ba.exe	31

C:\Users\Admin\AppData\Local\Temp\bb66a2b312b016cf0fa6cc05043f87ba.exe
"C:\Users\Admin\AppData\Local\Temp\bb66a2b312b016cf0fa6cc05043f87ba.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:2608
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ddrubych.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ddrubych.exe"
  2⤵
  - Executes dropped EXE
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:2528

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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\ddrubych.exe

Filesize
376KB

MD5
bb66a2b312b016cf0fa6cc05043f87ba

SHA1
0921f77b7bde2a380056d0a279c87dcc66c047a7

SHA256
e539bda619e24bb25719a6d5cf637643965d2561cd35ce24543d6a2f61963cf8

SHA512
21099c4190e790c09eb4b83d4070a7699395b7ff7f8743bf27ea5a6dbe38eb40a4d7fa76e8b5f1f3878c75666d7fca95d80bc25e848e1b23482692efee8d83eb

Download Submit
memory/2492-63-0x0000000000160000-0x0000000000162000-memory.dmp

Filesize
8KB

Download
memory/2492-64-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2492-65-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2528-66-0x0000000004890000-0x00000000058F2000-memory.dmp

Filesize
16.4MB

Download
memory/2608-62-0x0000000002370000-0x0000000002372000-memory.dmp

Filesize
8KB

Download