kutaki | 7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60

General

Target

7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe
Size

861KB
MD5

fb5773dfd3c5a2c6809243e3637ec030
SHA1

33df56380e6f4539a34485812899724151df7413
SHA256

7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60
SHA512

15a906058fecb609cca55c177203bded0ceb40bb5d4f909f6cd960195e9e78307f515a8afac20b4aa58488d686d58fbfb86668f091a9491131fb1bb69061d750
SSDEEP

24576:nELV7EVFRALV7EVFRiLLV7EVFRVVDwdr2CxfmP/UDMS08Ckn3s:cV7EVFR4V7EVFRivV7EVFRfwdr2Cxfmt

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

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

cmd.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation cmd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	cmd.exe

Drops startup file 2 IoCs

Processes:

7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gyneyafk.exe	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gyneyafk.exe	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe

Executes dropped EXE 1 IoCs

Processes:

gyneyafk.exe

pid process

3952 gyneyafk.exe
Drops file in Windows directory 1 IoCs

Processes:

mspaint.exe

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log mspaint.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3952	gyneyafk.exe

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	mspaint.exe

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:

gyneyafk.execmd.exemspaint.exe7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gyneyafk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mspaint.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe

Modifies registry class 1 IoCs

Processes:

cmd.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings cmd.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

mspaint.exe

pid process

4364 mspaint.exe
4364 mspaint.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings	cmd.exe

pid	process
4364	mspaint.exe
4364	mspaint.exe

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exegyneyafk.exemspaint.exe

pid	process
4936	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe
4936	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe
4936	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe
3952	gyneyafk.exe
3952	gyneyafk.exe
3952	gyneyafk.exe
4364	mspaint.exe
4364	mspaint.exe
4364	mspaint.exe
4364	mspaint.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.execmd.exe

description	pid	process	target process
PID 4936 wrote to memory of 4892	4936	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe	cmd.exe
PID 4936 wrote to memory of 4892	4936	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe	cmd.exe
PID 4936 wrote to memory of 4892	4936	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe	cmd.exe
PID 4936 wrote to memory of 3952	4936	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe	gyneyafk.exe
PID 4936 wrote to memory of 3952	4936	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe	gyneyafk.exe
PID 4936 wrote to memory of 3952	4936	7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe	gyneyafk.exe
PID 4892 wrote to memory of 4364	4892	cmd.exe	mspaint.exe
PID 4892 wrote to memory of 4364	4892	cmd.exe	mspaint.exe
PID 4892 wrote to memory of 4364	4892	cmd.exe	mspaint.exe

C:\Users\Admin\AppData\Local\Temp\7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe
"C:\Users\Admin\AppData\Local\Temp\7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60N.exe"
1⤵
- Drops startup file
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4892
- - C:\Windows\SysWOW64\mspaint.exe
    "C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp"
    3⤵
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:4364
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gyneyafk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gyneyafk.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3952

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:3392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

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\gyneyafk.exe

Filesize
861KB

MD5
fb5773dfd3c5a2c6809243e3637ec030

SHA1
33df56380e6f4539a34485812899724151df7413

SHA256
7498bfd956f6d8cced206e7b68adce735fa461eb081ffe048cfbeb38cdb69b60

SHA512
15a906058fecb609cca55c177203bded0ceb40bb5d4f909f6cd960195e9e78307f515a8afac20b4aa58488d686d58fbfb86668f091a9491131fb1bb69061d750

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads