kutaki | 2b322f4e53d8e70e2f3a53d4024b2f96fb029e0563c78f1efc0e18f742a5c5a5

Analysis

max time kernel
148s
max time network
46s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
01/08/2022, 10:38

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General

Target

NEFT_Payment.exe
Size

2.6MB
MD5

70e966394bf9947ff01b681bab9d0f71
SHA1

53946411e4e975a9ed354b16cd22041108e9f596
SHA256

c7e3deb446233da1eb6c6df66913065773d510a21750a9ea675b69be46ab245a
SHA512

a71a0b9b265b3c31c01305b121b386b8beb14cb6f670df4cbdad3d2fb7a3b3c508b25b48b253cba4c9aacde77e47fc32481fdc4cfc9221af83ea90ab7a6fc200

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://ojorobia.club/laptop/laptop.php

http://terebinnahicc.club/sec/kool.txt

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/0x000800000000368a-58.dat	family_kutaki
behavioral1/files/0x000800000000368a-59.dat	family_kutaki
behavioral1/files/0x000800000000368a-61.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
1104	bwiexlch.exe

Drops startup file 2 IoCs

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

Loads dropped DLL 2 IoCs

pid	Process
540	NEFT_Payment.exe
540	NEFT_Payment.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 SetWindowsHookEx 64 IoCs

pid	Process
540	NEFT_Payment.exe
540	NEFT_Payment.exe
540	NEFT_Payment.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe
1104	bwiexlch.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 1372	540	NEFT_Payment.exe	29
PID 540 wrote to memory of 1372	540	NEFT_Payment.exe	29
PID 540 wrote to memory of 1372	540	NEFT_Payment.exe	29
PID 540 wrote to memory of 1372	540	NEFT_Payment.exe	29
PID 540 wrote to memory of 1104	540	NEFT_Payment.exe	31
PID 540 wrote to memory of 1104	540	NEFT_Payment.exe	31
PID 540 wrote to memory of 1104	540	NEFT_Payment.exe	31
PID 540 wrote to memory of 1104	540	NEFT_Payment.exe	31

C:\Users\Admin\AppData\Local\Temp\NEFT_Payment.exe
"C:\Users\Admin\AppData\Local\Temp\NEFT_Payment.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:1372
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bwiexlch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bwiexlch.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1104

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\bwiexlch.exe

Filesize
2.6MB

MD5
70e966394bf9947ff01b681bab9d0f71

SHA1
53946411e4e975a9ed354b16cd22041108e9f596

SHA256
c7e3deb446233da1eb6c6df66913065773d510a21750a9ea675b69be46ab245a

SHA512
a71a0b9b265b3c31c01305b121b386b8beb14cb6f670df4cbdad3d2fb7a3b3c508b25b48b253cba4c9aacde77e47fc32481fdc4cfc9221af83ea90ab7a6fc200

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

Filesize
2.6MB

MD5
70e966394bf9947ff01b681bab9d0f71

SHA1
53946411e4e975a9ed354b16cd22041108e9f596

SHA256
c7e3deb446233da1eb6c6df66913065773d510a21750a9ea675b69be46ab245a

SHA512
a71a0b9b265b3c31c01305b121b386b8beb14cb6f670df4cbdad3d2fb7a3b3c508b25b48b253cba4c9aacde77e47fc32481fdc4cfc9221af83ea90ab7a6fc200

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

Filesize
2.6MB

MD5
70e966394bf9947ff01b681bab9d0f71

SHA1
53946411e4e975a9ed354b16cd22041108e9f596

SHA256
c7e3deb446233da1eb6c6df66913065773d510a21750a9ea675b69be46ab245a

SHA512
a71a0b9b265b3c31c01305b121b386b8beb14cb6f670df4cbdad3d2fb7a3b3c508b25b48b253cba4c9aacde77e47fc32481fdc4cfc9221af83ea90ab7a6fc200

Download Submit
memory/540-56-0x00000000758D1000-0x00000000758D3000-memory.dmp

Filesize
8KB

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