kutaki | adb3a34eb8e6464c7e2b7b4cbd314ed8bce96482c5ce66a09ece79b86591daaa

Analysis

max time kernel
109s
max time network
46s
platform
windows7_x64
resource
win7-20220414-en
submitted
10/06/2022, 04:18

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General

Target

Tax Payment Challan.exe

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://newloshree.xyz/work/kenny3.php

Signatures

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

Kutaki Executable 3 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012720-58.dat	family_kutaki
behavioral1/files/0x0009000000012720-59.dat	family_kutaki
behavioral1/files/0x0009000000012720-61.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
2004	spjokmch.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\spjokmch.exe	Tax Payment Challan.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\spjokmch.exe	Tax Payment Challan.exe

Loads dropped DLL 2 IoCs

pid	Process
1336	Tax Payment Challan.exe
1336	Tax Payment Challan.exe

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

System Information Discovery
T1082

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1668	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
1336	Tax Payment Challan.exe
1336	Tax Payment Challan.exe
1336	Tax Payment Challan.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe
2004	spjokmch.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 1876	1336	Tax Payment Challan.exe	29
PID 1336 wrote to memory of 1876	1336	Tax Payment Challan.exe	29
PID 1336 wrote to memory of 1876	1336	Tax Payment Challan.exe	29
PID 1336 wrote to memory of 1876	1336	Tax Payment Challan.exe	29
PID 1336 wrote to memory of 2004	1336	Tax Payment Challan.exe	31
PID 1336 wrote to memory of 2004	1336	Tax Payment Challan.exe	31
PID 1336 wrote to memory of 2004	1336	Tax Payment Challan.exe	31
PID 1336 wrote to memory of 2004	1336	Tax Payment Challan.exe	31

C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.exe
"C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:1876
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\spjokmch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\spjokmch.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2004

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1668

Network

MITRE ATT&CK Enterprise v6

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\spjokmch.exe

Filesize
716KB

MD5
048d34edb1310036f884ccca5905b216

SHA1
47bc33931d26ee7d7455398a74abff5beca1d39c

SHA256
0aa466d43ac980075738dafa15dde3e6ed03925fe732eb2d90f31ad297c49b23

SHA512
d853f906f18483e7d5e835af8b6239bb55722a9be0224c3897ec5cf09f7ef33836edbd192427aa53e4dc34140fcb921e95099d2e23d29cfba76bdab90473f186

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

Filesize
716KB

MD5
048d34edb1310036f884ccca5905b216

SHA1
47bc33931d26ee7d7455398a74abff5beca1d39c

SHA256
0aa466d43ac980075738dafa15dde3e6ed03925fe732eb2d90f31ad297c49b23

SHA512
d853f906f18483e7d5e835af8b6239bb55722a9be0224c3897ec5cf09f7ef33836edbd192427aa53e4dc34140fcb921e95099d2e23d29cfba76bdab90473f186

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

Filesize
716KB

MD5
048d34edb1310036f884ccca5905b216

SHA1
47bc33931d26ee7d7455398a74abff5beca1d39c

SHA256
0aa466d43ac980075738dafa15dde3e6ed03925fe732eb2d90f31ad297c49b23

SHA512
d853f906f18483e7d5e835af8b6239bb55722a9be0224c3897ec5cf09f7ef33836edbd192427aa53e4dc34140fcb921e95099d2e23d29cfba76bdab90473f186

Download Submit
memory/1336-56-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

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