kutaki | 3cd0709d63383d5819f979eeca64178334abf444e8a5609ab3f35f26dd30806d

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
14/11/2022, 19:49

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General

Target

TMB_NEFT.exe
Size

2.4MB
MD5

c6a75de5782bf853b0d79935f482f888
SHA1

e15600180a75dfde9d04cd8f8d45d8339fb36e13
SHA256

3cd0709d63383d5819f979eeca64178334abf444e8a5609ab3f35f26dd30806d
SHA512

74769668edc7027d26b2b77ef743544dcd73c393aa121af277d1fad68ee1902e7acce1e686f8e7f874003f73e885cd550ecdbd94a79527782b3591e28c6efebe
SSDEEP

49152:2kWk5cS7a+9XYaQpZehc4mTYJ78V9gyBn4coQfmP/SA8N:aajJGZ942KQV9hp4DQfmP/SA8

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://treysbeatend.com/laptop/squared.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 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022e18-136.dat	family_kutaki
behavioral2/files/0x0008000000022e18-137.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
2740	nnzipffk.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nnzipffk.exe	TMB_NEFT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nnzipffk.exe	TMB_NEFT.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 6 IoCs

pid	Process
916	TMB_NEFT.exe
916	TMB_NEFT.exe
916	TMB_NEFT.exe
2740	nnzipffk.exe
2740	nnzipffk.exe
2740	nnzipffk.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 916 wrote to memory of 4952	916	TMB_NEFT.exe	79
PID 916 wrote to memory of 4952	916	TMB_NEFT.exe	79
PID 916 wrote to memory of 4952	916	TMB_NEFT.exe	79
PID 916 wrote to memory of 2740	916	TMB_NEFT.exe	81
PID 916 wrote to memory of 2740	916	TMB_NEFT.exe	81
PID 916 wrote to memory of 2740	916	TMB_NEFT.exe	81

C:\Users\Admin\AppData\Local\Temp\TMB_NEFT.exe
"C:\Users\Admin\AppData\Local\Temp\TMB_NEFT.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:916
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:4952
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nnzipffk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nnzipffk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2740

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

Replay Monitor

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Downloads

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

Filesize
2.4MB

MD5
c6a75de5782bf853b0d79935f482f888

SHA1
e15600180a75dfde9d04cd8f8d45d8339fb36e13

SHA256
3cd0709d63383d5819f979eeca64178334abf444e8a5609ab3f35f26dd30806d

SHA512
74769668edc7027d26b2b77ef743544dcd73c393aa121af277d1fad68ee1902e7acce1e686f8e7f874003f73e885cd550ecdbd94a79527782b3591e28c6efebe

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

Filesize
2.4MB

MD5
c6a75de5782bf853b0d79935f482f888

SHA1
e15600180a75dfde9d04cd8f8d45d8339fb36e13

SHA256
3cd0709d63383d5819f979eeca64178334abf444e8a5609ab3f35f26dd30806d

SHA512
74769668edc7027d26b2b77ef743544dcd73c393aa121af277d1fad68ee1902e7acce1e686f8e7f874003f73e885cd550ecdbd94a79527782b3591e28c6efebe

Download Submit