kutaki | fd521a6a9e13b00329723103b9039e23950450f901da8f61cea3b92ff96dceee

General

Target

Challan.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

C2

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

Processes:

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

Drops startup file 2 IoCs

Processes:

Challan.exe

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

Executes dropped EXE 1 IoCs

Processes:

swxmpyfk.exe

pid process

2888 swxmpyfk.exe
Loads dropped DLL 2 IoCs

Processes:

Challan.exe

pid process

2516 Challan.exe
2516 Challan.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

Processes:

DllHost.exe

pid process

2456 DllHost.exe

pid	process
2888	swxmpyfk.exe

pid	process
2456	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

Processes:

Challan.exeswxmpyfk.exe

pid	process
2516	Challan.exe
2516	Challan.exe
2516	Challan.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe
2888	swxmpyfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Challan.exe

description	pid	process	target process
PID 2516 wrote to memory of 2780	2516	Challan.exe	cmd.exe
PID 2516 wrote to memory of 2780	2516	Challan.exe	cmd.exe
PID 2516 wrote to memory of 2780	2516	Challan.exe	cmd.exe
PID 2516 wrote to memory of 2780	2516	Challan.exe	cmd.exe
PID 2516 wrote to memory of 2888	2516	Challan.exe	swxmpyfk.exe
PID 2516 wrote to memory of 2888	2516	Challan.exe	swxmpyfk.exe
PID 2516 wrote to memory of 2888	2516	Challan.exe	swxmpyfk.exe
PID 2516 wrote to memory of 2888	2516	Challan.exe	swxmpyfk.exe

C:\Users\Admin\AppData\Local\Temp\Challan.exe
"C:\Users\Admin\AppData\Local\Temp\Challan.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:2780
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\swxmpyfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\swxmpyfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2888

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
501KB

MD5
816cdd0d2e0852404804a683d1cd1b53

SHA1
9842b46047c8ef18a2041a7a35fe3b51515dd829

SHA256
2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d

SHA512
9648bb75a15afb57baeb7c9becf994dece54f499f04df344210c8241839d493599b71cf7ae7a9f4f790009ba3a9b8d2f80df7db41bac5b78edce20bd1a115cf2

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

Filesize
501KB

MD5
816cdd0d2e0852404804a683d1cd1b53

SHA1
9842b46047c8ef18a2041a7a35fe3b51515dd829

SHA256
2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d

SHA512
9648bb75a15afb57baeb7c9becf994dece54f499f04df344210c8241839d493599b71cf7ae7a9f4f790009ba3a9b8d2f80df7db41bac5b78edce20bd1a115cf2

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

Filesize
501KB

MD5
816cdd0d2e0852404804a683d1cd1b53

SHA1
9842b46047c8ef18a2041a7a35fe3b51515dd829

SHA256
2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d

SHA512
9648bb75a15afb57baeb7c9becf994dece54f499f04df344210c8241839d493599b71cf7ae7a9f4f790009ba3a9b8d2f80df7db41bac5b78edce20bd1a115cf2

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

Filesize
501KB

MD5
816cdd0d2e0852404804a683d1cd1b53

SHA1
9842b46047c8ef18a2041a7a35fe3b51515dd829

SHA256
2114e284c9636a3b015aadb156369d5c55dc29541bc9f27ecf3724f16a65fa8d

SHA512
9648bb75a15afb57baeb7c9becf994dece54f499f04df344210c8241839d493599b71cf7ae7a9f4f790009ba3a9b8d2f80df7db41bac5b78edce20bd1a115cf2

Download Submit
memory/2456-63-0x0000000000130000-0x0000000000132000-memory.dmp

Filesize
8KB

Download
memory/2456-64-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2456-65-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2780-62-0x00000000020F0000-0x00000000020F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads