kutaki | 3cd0709d63383d5819f979eeca64178334abf444e8a5609ab3f35f26dd30806d

Analysis

max time kernel
147s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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 3 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000054a8-58.dat	family_kutaki
behavioral1/files/0x000c0000000054a8-59.dat	family_kutaki
behavioral1/files/0x000c0000000054a8-61.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
948	lzubybfk.exe

Drops startup file 2 IoCs

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

Loads dropped DLL 2 IoCs

pid	Process
1972	TMB_NEFT.exe
1972	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 64 IoCs

pid	Process
1972	TMB_NEFT.exe
1972	TMB_NEFT.exe
1972	TMB_NEFT.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe
948	lzubybfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 1360	1972	TMB_NEFT.exe	29
PID 1972 wrote to memory of 1360	1972	TMB_NEFT.exe	29
PID 1972 wrote to memory of 1360	1972	TMB_NEFT.exe	29
PID 1972 wrote to memory of 1360	1972	TMB_NEFT.exe	29
PID 1972 wrote to memory of 948	1972	TMB_NEFT.exe	31
PID 1972 wrote to memory of 948	1972	TMB_NEFT.exe	31
PID 1972 wrote to memory of 948	1972	TMB_NEFT.exe	31
PID 1972 wrote to memory of 948	1972	TMB_NEFT.exe	31

C:\Users\Admin\AppData\Local\Temp\TMB_NEFT.exe
"C:\Users\Admin\AppData\Local\Temp\TMB_NEFT.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:1360
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lzubybfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lzubybfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:948

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\lzubybfk.exe

Filesize
2.4MB

MD5
c6a75de5782bf853b0d79935f482f888

SHA1
e15600180a75dfde9d04cd8f8d45d8339fb36e13

SHA256
3cd0709d63383d5819f979eeca64178334abf444e8a5609ab3f35f26dd30806d

SHA512
74769668edc7027d26b2b77ef743544dcd73c393aa121af277d1fad68ee1902e7acce1e686f8e7f874003f73e885cd550ecdbd94a79527782b3591e28c6efebe

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

Filesize
2.4MB

MD5
c6a75de5782bf853b0d79935f482f888

SHA1
e15600180a75dfde9d04cd8f8d45d8339fb36e13

SHA256
3cd0709d63383d5819f979eeca64178334abf444e8a5609ab3f35f26dd30806d

SHA512
74769668edc7027d26b2b77ef743544dcd73c393aa121af277d1fad68ee1902e7acce1e686f8e7f874003f73e885cd550ecdbd94a79527782b3591e28c6efebe

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

Filesize
2.4MB

MD5
c6a75de5782bf853b0d79935f482f888

SHA1
e15600180a75dfde9d04cd8f8d45d8339fb36e13

SHA256
3cd0709d63383d5819f979eeca64178334abf444e8a5609ab3f35f26dd30806d

SHA512
74769668edc7027d26b2b77ef743544dcd73c393aa121af277d1fad68ee1902e7acce1e686f8e7f874003f73e885cd550ecdbd94a79527782b3591e28c6efebe

Download Submit
memory/1972-56-0x0000000075501000-0x0000000075503000-memory.dmp

Filesize
8KB

Download