kutaki | 267c4bb4b2e4c2b06f3b63d58f12a6b4e254d98d36dafab61ac5867b8e7e31b2

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
10-11-2023 02:22

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General

Target

2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe
Size

501KB
MD5

816cdd0d2e0852404804a683d1cd1b53
SHA1

9842b46047c8ef18a2041a7a35fe3b51515dd829
SHA256

2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d
SHA512

9648bb75a15afb57baeb7c9becf994dece54f499f04df344210c8241839d493599b71cf7ae7a9f4f790009ba3a9b8d2f80df7db41bac5b78edce20bd1a115cf2
SSDEEP

12288:6Ycs+XKy/AZe+e9AP8LP810o4HfyNQlQj0DunOq0Mte9oIopkyd+wMeMIC10pqTO:6Ycs+XKy/AZeJ9AP8LP810o4HfyNQlQn

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://linkwotowoto.club/new/two.php

Signatures

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

Kutaki Executable 4 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001225d-6.dat	family_kutaki
behavioral1/files/0x000c00000001225d-4.dat	family_kutaki
behavioral1/files/0x000c00000001225d-10.dat	family_kutaki
behavioral1/files/0x000c00000001225d-8.dat	family_kutaki

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\psuqtnfk.exe	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\psuqtnfk.exe	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe

Executes dropped EXE 1 IoCs

pid	Process
1288	psuqtnfk.exe

Loads dropped DLL 2 IoCs

pid	Process
2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe
2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2644	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe
2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe
2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe
1288	psuqtnfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 2856	2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe	29
PID 2060 wrote to memory of 2856	2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe	29
PID 2060 wrote to memory of 2856	2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe	29
PID 2060 wrote to memory of 2856	2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe	29
PID 2060 wrote to memory of 1288	2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe	31
PID 2060 wrote to memory of 1288	2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe	31
PID 2060 wrote to memory of 1288	2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe	31
PID 2060 wrote to memory of 1288	2060	2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe	31

C:\Users\Admin\AppData\Local\Temp\2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe
"C:\Users\Admin\AppData\Local\Temp\2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:2856
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\psuqtnfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\psuqtnfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1288

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2644

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\psuqtnfk.exe

Filesize
501KB

MD5
816cdd0d2e0852404804a683d1cd1b53

SHA1
9842b46047c8ef18a2041a7a35fe3b51515dd829

SHA256
2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d

SHA512
9648bb75a15afb57baeb7c9becf994dece54f499f04df344210c8241839d493599b71cf7ae7a9f4f790009ba3a9b8d2f80df7db41bac5b78edce20bd1a115cf2

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\psuqtnfk.exe

Filesize
501KB

MD5
816cdd0d2e0852404804a683d1cd1b53

SHA1
9842b46047c8ef18a2041a7a35fe3b51515dd829

SHA256
2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d

SHA512
9648bb75a15afb57baeb7c9becf994dece54f499f04df344210c8241839d493599b71cf7ae7a9f4f790009ba3a9b8d2f80df7db41bac5b78edce20bd1a115cf2

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\psuqtnfk.exe

Filesize
501KB

MD5
816cdd0d2e0852404804a683d1cd1b53

SHA1
9842b46047c8ef18a2041a7a35fe3b51515dd829

SHA256
2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d

SHA512
9648bb75a15afb57baeb7c9becf994dece54f499f04df344210c8241839d493599b71cf7ae7a9f4f790009ba3a9b8d2f80df7db41bac5b78edce20bd1a115cf2

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\psuqtnfk.exe

Filesize
501KB

MD5
816cdd0d2e0852404804a683d1cd1b53

SHA1
9842b46047c8ef18a2041a7a35fe3b51515dd829

SHA256
2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d

SHA512
9648bb75a15afb57baeb7c9becf994dece54f499f04df344210c8241839d493599b71cf7ae7a9f4f790009ba3a9b8d2f80df7db41bac5b78edce20bd1a115cf2

Download Submit
memory/2644-63-0x00000000001A0000-0x00000000001A2000-memory.dmp

Filesize
8KB

Download
memory/2644-64-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2644-65-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2856-62-0x00000000020F0000-0x00000000020F2000-memory.dmp

Filesize
8KB

Download