kutaki | aa2228845b62429199c3bc15482fece687518c1b55e6d19a4816be2652159296

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
19-05-2024 20:05

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General

Target

2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe
Size

645KB
MD5

2c503f3afa7dc8b3ff80910eaee058b0
SHA1

67d1b22afc35b76b813a25f1a6d0beb5074bab68
SHA256

aa2228845b62429199c3bc15482fece687518c1b55e6d19a4816be2652159296
SHA512

9fda6580f08dcb171dc10da16d74cd7e5c3cfa138311d0bb680568d00d6c69cd6cf22c2b2e5359eeaf8dc01948eecbf9816275509faf0557c9015fdfcd8658d2
SSDEEP

12288:p700p8Erbi0OpL46A9jmP/uhu/yMS08CkntxYRgL:zp8Erb+GfmP/UDMS08Ckn37

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

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\tonzanfk.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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation cmd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	cmd.exe

Drops startup file 2 IoCs

Processes:

2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tonzanfk.exe	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tonzanfk.exe	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe

Executes dropped EXE 1 IoCs

Processes:

tonzanfk.exe

pid process

3376 tonzanfk.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
Modifies registry class 1 IoCs

Processes:

cmd.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000_Classes\Local Settings cmd.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

mspaint.exe

pid process

528 mspaint.exe
528 mspaint.exe

pid	process
3376	tonzanfk.exe

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

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000_Classes\Local Settings	cmd.exe

pid	process
528	mspaint.exe
528	mspaint.exe

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exetonzanfk.exemspaint.exe

pid	process
3348	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe
3348	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe
3348	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe
3376	tonzanfk.exe
3376	tonzanfk.exe
3376	tonzanfk.exe
528	mspaint.exe
528	mspaint.exe
528	mspaint.exe
528	mspaint.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.execmd.exe

description	pid	process	target process
PID 3348 wrote to memory of 4192	3348	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe	cmd.exe
PID 3348 wrote to memory of 4192	3348	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe	cmd.exe
PID 3348 wrote to memory of 4192	3348	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe	cmd.exe
PID 3348 wrote to memory of 3376	3348	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe	tonzanfk.exe
PID 3348 wrote to memory of 3376	3348	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe	tonzanfk.exe
PID 3348 wrote to memory of 3376	3348	2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe	tonzanfk.exe
PID 4192 wrote to memory of 528	4192	cmd.exe	mspaint.exe
PID 4192 wrote to memory of 528	4192	cmd.exe	mspaint.exe
PID 4192 wrote to memory of 528	4192	cmd.exe	mspaint.exe

C:\Users\Admin\AppData\Local\Temp\2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\2c503f3afa7dc8b3ff80910eaee058b0_NeikiAnalytics.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3348

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
2⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4192

C:\Windows\SysWOW64\mspaint.exe
"C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp"
3⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:528

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tonzanfk.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tonzanfk.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3376

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:4600

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tonzanfk.exe
Filesize
645KB

MD5
2c503f3afa7dc8b3ff80910eaee058b0

SHA1
67d1b22afc35b76b813a25f1a6d0beb5074bab68

SHA256
aa2228845b62429199c3bc15482fece687518c1b55e6d19a4816be2652159296

SHA512
9fda6580f08dcb171dc10da16d74cd7e5c3cfa138311d0bb680568d00d6c69cd6cf22c2b2e5359eeaf8dc01948eecbf9816275509faf0557c9015fdfcd8658d2

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