kutaki | 6f1a46186597a3c90fd56bae547ef7d486d961c33ca73eb613e4186d8b5a371f

Analysis

max time kernel
145s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2022, 11:11

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
ITC.exe
Size 544KB
Sample220919-m99weaebf5
SHA256 83d66249977c93aee45be9aa3e6ccfc2b450c23bc9db6e8e0764ed35e1b5a06e
MD5 039f072565f5c1a20edbddc6a8cd4b7e
SHA1 0b0577a885f82fd073dc1f86e5ee6e72054030e1
SHA512 74a08454326688fc944d05ec9d37ee21aa1de2bd5ab5d03c7360bf0245650a083bb8e77fba876475513750154809c437db0fd92b18386fcca98cc3d82cf907fd
SSDEEP 6144:m8ylUOltoMFD95ad/gvlfZPFHrbl3wL0n9/G0GM5JLMKRMWBXd+tPdv5W4Es+CSE:p2YcJmW/+b5B4/8vYjDpK8atfx8hDu
MD5 SHA1 SHA512 SSDEEP

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/0x000200000001e5ab-138.dat	family_kutaki
behavioral2/files/0x000200000001e5ab-137.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
2812	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-1-5-21-2629973501-4017243118-3254762364-1000\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	ITC.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ch.exe	ITC.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-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1360	mspaint.exe
1360	mspaint.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
3588	ITC.exe
3588	ITC.exe
3588	ITC.exe
1360	mspaint.exe
1360	mspaint.exe
1360	mspaint.exe
1360	mspaint.exe
2812	ch.exe
2812	ch.exe
2812	ch.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 3052	3588	ITC.exe	79
PID 3588 wrote to memory of 3052	3588	ITC.exe	79
PID 3588 wrote to memory of 3052	3588	ITC.exe	79
PID 3052 wrote to memory of 1360	3052	cmd.exe	81
PID 3052 wrote to memory of 1360	3052	cmd.exe	81
PID 3052 wrote to memory of 1360	3052	cmd.exe	81
PID 3588 wrote to memory of 2812	3588	ITC.exe	87
PID 3588 wrote to memory of 2812	3588	ITC.exe	87
PID 3588 wrote to memory of 2812	3588	ITC.exe	87

C:\Users\Admin\AppData\Local\Temp\ITC.exe
"C:\Users\Admin\AppData\Local\Temp\ITC.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3588
- 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:3052
- - 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:1360
- 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:2812

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:4824

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

Replay Monitor

Loading Replay Monitor...

Downloads

ch.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ch.exe
Size 544KB
SHA256 83d66249977c93aee45be9aa3e6ccfc2b450c23bc9db6e8e0764ed35e1b5a06e
MD5 039f072565f5c1a20edbddc6a8cd4b7e
SHA1 0b0577a885f82fd073dc1f86e5ee6e72054030e1
SHA512 74a08454326688fc944d05ec9d37ee21aa1de2bd5ab5d03c7360bf0245650a083bb8e77fba876475513750154809c437db0fd92b18386fcca98cc3d82cf907fd
SSDEEP 6144:m8ylUOltoMFD95ad/gvlfZPFHrbl3wL0n9/G0GM5JLMKRMWBXd+tPdv5W4Es+CSE:p2YcJmW/+b5B4/8vYjDpK8atfx8hDu
MD5 SHA1 SHA512 SSDEEP

Submit Download

ch.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ch.exe
Size 544KB
SHA256 83d66249977c93aee45be9aa3e6ccfc2b450c23bc9db6e8e0764ed35e1b5a06e
MD5 039f072565f5c1a20edbddc6a8cd4b7e
SHA1 0b0577a885f82fd073dc1f86e5ee6e72054030e1
SHA512 74a08454326688fc944d05ec9d37ee21aa1de2bd5ab5d03c7360bf0245650a083bb8e77fba876475513750154809c437db0fd92b18386fcca98cc3d82cf907fd
SSDEEP 6144:m8ylUOltoMFD95ad/gvlfZPFHrbl3wL0n9/G0GM5JLMKRMWBXd+tPdv5W4Es+CSE:p2YcJmW/+b5B4/8vYjDpK8atfx8hDu
MD5 SHA1 SHA512 SSDEEP

Submit Download