kutaki | 2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca

General

Target

2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe
Size

561KB
MD5

ae3ecc20ed5eb6d09ac71eed21cadc7b
SHA1

8a5c57538ab356dcf99a320fc3724e618411a7b7
SHA256

2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca
SHA512

a91b222f4890cc53f159390bc5ff725d525a6fb64e9a58842b35ecd0b17a2b989593cea9d16b83473c9fccb3af072296ef0a99499843ca372257ab8fc9e110f1
SSDEEP

12288:dUJ+IF3iIj6bn46A9jmP/uhu/yMS08CkntxYRCL:m+HIe8fmP/UDMS08Ckn3x

Score

10^/10

kutaki discovery keylogger stealer

Malware Config

Extracted

Family

kutaki

C2

http://newlinkwotolove.club/love/three.php

Signatures

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

Kutaki Executable 1 IoCs

Processes:

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

Drops startup file 2 IoCs

Processes:

2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fxbfqrfk.exe	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fxbfqrfk.exe	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe

Executes dropped EXE 1 IoCs

Processes:

fxbfqrfk.exe

pid process

2748 fxbfqrfk.exe

pid	process
2748	fxbfqrfk.exe

Loads dropped DLL 2 IoCs

Processes:

2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe

pid	process
2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe
2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.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:

2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.execmd.exefxbfqrfk.exeDllHost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fxbfqrfk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

DllHost.exe

pid process

2664 DllHost.exe

pid	process
2664	DllHost.exe

Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exefxbfqrfk.exe

pid	process
2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe
2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe
2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe
2748	fxbfqrfk.exe
2748	fxbfqrfk.exe
2748	fxbfqrfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe

description	pid	process	target process
PID 2516 wrote to memory of 2872	2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe	cmd.exe
PID 2516 wrote to memory of 2872	2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe	cmd.exe
PID 2516 wrote to memory of 2872	2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe	cmd.exe
PID 2516 wrote to memory of 2872	2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe	cmd.exe
PID 2516 wrote to memory of 2748	2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe	fxbfqrfk.exe
PID 2516 wrote to memory of 2748	2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe	fxbfqrfk.exe
PID 2516 wrote to memory of 2748	2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe	fxbfqrfk.exe
PID 2516 wrote to memory of 2748	2516	2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe	fxbfqrfk.exe

C:\Users\Admin\AppData\Local\Temp\2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe
"C:\Users\Admin\AppData\Local\Temp\2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2872
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fxbfqrfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fxbfqrfk.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2748

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:2664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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

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

Filesize
561KB

MD5
ae3ecc20ed5eb6d09ac71eed21cadc7b

SHA1
8a5c57538ab356dcf99a320fc3724e618411a7b7

SHA256
2c87a4f8cd94516457dcb4f4563a558120b9b3f9f4aaef5d12eb383ef6b7d4ca

SHA512
a91b222f4890cc53f159390bc5ff725d525a6fb64e9a58842b35ecd0b17a2b989593cea9d16b83473c9fccb3af072296ef0a99499843ca372257ab8fc9e110f1

Download Submit
memory/2664-63-0x0000000000160000-0x0000000000162000-memory.dmp

Filesize
8KB

Download
memory/2872-62-0x0000000000330000-0x0000000000332000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads