kutaki | 4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e

General

Target

f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe
Size

560KB
MD5

f85699f0c3bca198228a5af7de67ecba
SHA1

56f4a24a398dae4e6e47d62832144673b3486f9f
SHA256

4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e
SHA512

b170c937b015ae6a2ae98ae609f2c6626130681b95d45089d99d9bed9b8fffc54b170b1f69d0d2b64acbf8d3282e08e45b5accbdbbc753dbaa13d6ff510e3582
SSDEEP

6144:Qo18eOaj6RFu8Ogc+ICwVDhvrb1JA2vbyWg3Ti9ptZdACz+0hRFQDOcYd/auoFn4:Qaj6XO1X1fTnTjOuRFQGSPI5eLX+

Score

10^/10

kutaki discovery keylogger stealer

Malware Config

Extracted

Family

kutaki

C2

http://maregatu.club/paapoo/pove.php

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

Signatures

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

Kutaki Executable 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gumxymch.exe	family_kutaki

Drops startup file 2 IoCs

Processes:

f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gumxymch.exe	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gumxymch.exe	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

gumxymch.exe

pid process

2420 gumxymch.exe
Loads dropped DLL 2 IoCs

Processes:

f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe

pid process

1544 f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe
1544 f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe

pid	process
2420	gumxymch.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

Processes:

gumxymch.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	gumxymch.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	gumxymch.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

cmd.exegumxymch.exeDllHost.exef85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gumxymch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

DllHost.exe

pid process

2944 DllHost.exe

pid	process
2944	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

Processes:

f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exegumxymch.exe

pid	process
1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe
1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe
1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe
2420	gumxymch.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe

description	pid	process	target process
PID 1544 wrote to memory of 2680	1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe	cmd.exe
PID 1544 wrote to memory of 2680	1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe	cmd.exe
PID 1544 wrote to memory of 2680	1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe	cmd.exe
PID 1544 wrote to memory of 2680	1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe	cmd.exe
PID 1544 wrote to memory of 2420	1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe	gumxymch.exe
PID 1544 wrote to memory of 2420	1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe	gumxymch.exe
PID 1544 wrote to memory of 2420	1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe	gumxymch.exe
PID 1544 wrote to memory of 2420	1544	f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe	gumxymch.exe

C:\Users\Admin\AppData\Local\Temp\f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f85699f0c3bca198228a5af7de67ecba_JaffaCakes118.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gumxymch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gumxymch.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2420

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
PID:2944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
560KB

MD5
f85699f0c3bca198228a5af7de67ecba

SHA1
56f4a24a398dae4e6e47d62832144673b3486f9f

SHA256
4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e

SHA512
b170c937b015ae6a2ae98ae609f2c6626130681b95d45089d99d9bed9b8fffc54b170b1f69d0d2b64acbf8d3282e08e45b5accbdbbc753dbaa13d6ff510e3582

Download Submit
memory/2680-62-0x0000000000500000-0x0000000000502000-memory.dmp

Filesize
8KB

Download
memory/2944-63-0x00000000000F0000-0x00000000000F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads