kutaki | 11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c

General

Target

11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe
Size

603KB
MD5

1299315c3032491208ef04f8674aa5fa
SHA1

f320997f6f3479ef392be9f35e1f5b600f9f42f1
SHA256

11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c
SHA512

41025d5293d43d630c932d1b186c75c793cf9430222a90e02c719c2b5a436715c3298626ef1c1567f92a42e468f8abb5c053e44c38d339b1e75c5b329ed8474a

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 4 IoCs

resource	yara_rule
behavioral1/files/0x00080000000132d7-60.dat	family_kutaki
behavioral1/files/0x00080000000132d7-61.dat	family_kutaki
behavioral1/files/0x00080000000132d7-63.dat	family_kutaki
behavioral1/files/0x00080000000132d7-68.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
664	lunlerio.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe

Loads dropped DLL 2 IoCs

pid	Process
1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe
1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.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	lunlerio.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	lunlerio.exe

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

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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main	lunlerio.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
960	DllHost.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe
1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe
1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe
664	lunlerio.exe
664	lunlerio.exe
664	lunlerio.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1356 wrote to memory of 1844	1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe	28
PID 1356 wrote to memory of 1844	1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe	28
PID 1356 wrote to memory of 1844	1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe	28
PID 1356 wrote to memory of 1844	1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe	28
PID 1356 wrote to memory of 664	1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe	31
PID 1356 wrote to memory of 664	1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe	31
PID 1356 wrote to memory of 664	1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe	31
PID 1356 wrote to memory of 664	1356	11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe	31

C:\Users\Admin\AppData\Local\Temp\11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe
"C:\Users\Admin\AppData\Local\Temp\11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1356
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:1844
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:664

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

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\lunlerio.exe

Filesize
603KB

MD5
1299315c3032491208ef04f8674aa5fa

SHA1
f320997f6f3479ef392be9f35e1f5b600f9f42f1

SHA256
11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c

SHA512
41025d5293d43d630c932d1b186c75c793cf9430222a90e02c719c2b5a436715c3298626ef1c1567f92a42e468f8abb5c053e44c38d339b1e75c5b329ed8474a

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

Filesize
603KB

MD5
1299315c3032491208ef04f8674aa5fa

SHA1
f320997f6f3479ef392be9f35e1f5b600f9f42f1

SHA256
11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c

SHA512
41025d5293d43d630c932d1b186c75c793cf9430222a90e02c719c2b5a436715c3298626ef1c1567f92a42e468f8abb5c053e44c38d339b1e75c5b329ed8474a

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

Filesize
603KB

MD5
1299315c3032491208ef04f8674aa5fa

SHA1
f320997f6f3479ef392be9f35e1f5b600f9f42f1

SHA256
11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c

SHA512
41025d5293d43d630c932d1b186c75c793cf9430222a90e02c719c2b5a436715c3298626ef1c1567f92a42e468f8abb5c053e44c38d339b1e75c5b329ed8474a

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

Filesize
603KB

MD5
1299315c3032491208ef04f8674aa5fa

SHA1
f320997f6f3479ef392be9f35e1f5b600f9f42f1

SHA256
11724aa717338d3fa58fc1c6d92cdf9b64ca986b0e2f6cde1a5d795d6277fc4c

SHA512
41025d5293d43d630c932d1b186c75c793cf9430222a90e02c719c2b5a436715c3298626ef1c1567f92a42e468f8abb5c053e44c38d339b1e75c5b329ed8474a

Download Submit
memory/664-67-0x0000000003C51000-0x0000000004AFD000-memory.dmp

Filesize
14.7MB

Download
memory/1356-56-0x0000000075541000-0x0000000075543000-memory.dmp

Filesize
8KB

Download

Analysis

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