kutaki | 382d5c176d59f1da5470bc7f14b7a19364b05c33561c4e7267c190a93ca65176

Analysis

max time kernel
131s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/08/2022, 18:52

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General

Target

State Bank of India Payment.exe
Size

536KB
MD5

b01906f5328bf8df68d9c0e5637ee050
SHA1

9a83caa72c6c86d399acf1da16014a88654ee043
SHA256

b81ce1757e7d279ca226e752baa9422622119a49e8364866b91667301c74e589
SHA512

969c1789142c9ad646c4232e8f46ebf0bae4d0f20ba25d4d30b32a0a263917a65584bc5f2eb4145ead0a80453f168ceae4c4a12078a43fdd2fa504239e2eb036
SSDEEP

6144:1T1htGytvUf4yclQgx7+8DfpedxbKT3F9opcVyFW4Es+CS/wUcvzUjSa5pK2mKd4:TP+8DpFTvodFB4/8vYjDpK8atfx8hDu

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://newbosslink.xyz/baba/new4.php

Signatures

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

Kutaki Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e805-138.dat	family_kutaki
behavioral2/files/0x000300000001e805-137.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
4708	ch.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1502147629-2175634256-330282290-1000\Control Panel\International\Geo\Nation	cmd.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ch.exe	State Bank of India Payment.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ch.exe	State Bank of India Payment.exe

Drops file in Windows directory 1 IoCs

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). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1502147629-2175634256-330282290-1000_Classes\Local Settings	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
112	mspaint.exe
112	mspaint.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2300	State Bank of India Payment.exe
2300	State Bank of India Payment.exe
2300	State Bank of India Payment.exe
112	mspaint.exe
112	mspaint.exe
112	mspaint.exe
112	mspaint.exe
4708	ch.exe
4708	ch.exe
4708	ch.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 1544	2300	State Bank of India Payment.exe	84
PID 2300 wrote to memory of 1544	2300	State Bank of India Payment.exe	84
PID 2300 wrote to memory of 1544	2300	State Bank of India Payment.exe	84
PID 1544 wrote to memory of 112	1544	cmd.exe	86
PID 1544 wrote to memory of 112	1544	cmd.exe	86
PID 1544 wrote to memory of 112	1544	cmd.exe	86
PID 2300 wrote to memory of 4708	2300	State Bank of India Payment.exe	92
PID 2300 wrote to memory of 4708	2300	State Bank of India Payment.exe	92
PID 2300 wrote to memory of 4708	2300	State Bank of India Payment.exe	92

C:\Users\Admin\AppData\Local\Temp\State Bank of India Payment.exe
"C:\Users\Admin\AppData\Local\Temp\State Bank of India Payment.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2300
- 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:1544
- - 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:112
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ch.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4708

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:3848

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
536KB

MD5
b01906f5328bf8df68d9c0e5637ee050

SHA1
9a83caa72c6c86d399acf1da16014a88654ee043

SHA256
b81ce1757e7d279ca226e752baa9422622119a49e8364866b91667301c74e589

SHA512
969c1789142c9ad646c4232e8f46ebf0bae4d0f20ba25d4d30b32a0a263917a65584bc5f2eb4145ead0a80453f168ceae4c4a12078a43fdd2fa504239e2eb036

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

Filesize
536KB

MD5
b01906f5328bf8df68d9c0e5637ee050

SHA1
9a83caa72c6c86d399acf1da16014a88654ee043

SHA256
b81ce1757e7d279ca226e752baa9422622119a49e8364866b91667301c74e589

SHA512
969c1789142c9ad646c4232e8f46ebf0bae4d0f20ba25d4d30b32a0a263917a65584bc5f2eb4145ead0a80453f168ceae4c4a12078a43fdd2fa504239e2eb036

Download Submit