kutaki | b6f0ba05cacbf16b6bf1c0366126556a3763121e14621e12ff7788a11bb5d44c

Analysis

max time kernel
77s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12/12/2022, 06:29

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General

Target

Recipt.exe
Size

629KB
MD5

64b06d9408f8681bce5821db705273ce
SHA1

52b1e9f9859a64f71f28fd83c8fe62aa60352589
SHA256

5152a2dee24714603552cf873e34a12b8822df103336e8f0e1da5379720c7348
SHA512

7ec1ad8d8b02d0b9c0fbd63317211288d71123e3c5c9f2df646ad5b5a8f0cf8006ee357ff288ea793981fbde141126ec18fb44786b5d6bda62b0309b9fce84ce
SSDEEP

12288:UiwaCECK5cldtdlEqDPylAwn46A9jmP/uhu/yMS08CkntxYRyL:ZCED5cldtdPDgAw4fmP/UDMS08Ckn35

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://newbosslink.xyz/baba/new4.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/0x0007000000015c29-58.dat	family_kutaki
behavioral1/files/0x0007000000015c29-59.dat	family_kutaki
behavioral1/files/0x0007000000015c29-62.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
1320	olaulvfk.exe

Drops startup file 2 IoCs

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

Loads dropped DLL 2 IoCs

pid	Process
1088	Recipt.exe
1088	Recipt.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
1780	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
1088	Recipt.exe
1088	Recipt.exe
1088	Recipt.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe
1320	olaulvfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 1944	1088	Recipt.exe	28
PID 1088 wrote to memory of 1944	1088	Recipt.exe	28
PID 1088 wrote to memory of 1944	1088	Recipt.exe	28
PID 1088 wrote to memory of 1944	1088	Recipt.exe	28
PID 1088 wrote to memory of 1320	1088	Recipt.exe	30
PID 1088 wrote to memory of 1320	1088	Recipt.exe	30
PID 1088 wrote to memory of 1320	1088	Recipt.exe	30
PID 1088 wrote to memory of 1320	1088	Recipt.exe	30

C:\Users\Admin\AppData\Local\Temp\Recipt.exe
"C:\Users\Admin\AppData\Local\Temp\Recipt.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:1944
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\olaulvfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\olaulvfk.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1320

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1780

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\olaulvfk.exe

Filesize
629KB

MD5
64b06d9408f8681bce5821db705273ce

SHA1
52b1e9f9859a64f71f28fd83c8fe62aa60352589

SHA256
5152a2dee24714603552cf873e34a12b8822df103336e8f0e1da5379720c7348

SHA512
7ec1ad8d8b02d0b9c0fbd63317211288d71123e3c5c9f2df646ad5b5a8f0cf8006ee357ff288ea793981fbde141126ec18fb44786b5d6bda62b0309b9fce84ce

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

Filesize
629KB

MD5
64b06d9408f8681bce5821db705273ce

SHA1
52b1e9f9859a64f71f28fd83c8fe62aa60352589

SHA256
5152a2dee24714603552cf873e34a12b8822df103336e8f0e1da5379720c7348

SHA512
7ec1ad8d8b02d0b9c0fbd63317211288d71123e3c5c9f2df646ad5b5a8f0cf8006ee357ff288ea793981fbde141126ec18fb44786b5d6bda62b0309b9fce84ce

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

Filesize
629KB

MD5
64b06d9408f8681bce5821db705273ce

SHA1
52b1e9f9859a64f71f28fd83c8fe62aa60352589

SHA256
5152a2dee24714603552cf873e34a12b8822df103336e8f0e1da5379720c7348

SHA512
7ec1ad8d8b02d0b9c0fbd63317211288d71123e3c5c9f2df646ad5b5a8f0cf8006ee357ff288ea793981fbde141126ec18fb44786b5d6bda62b0309b9fce84ce

Download Submit
memory/1088-56-0x0000000074C91000-0x0000000074C93000-memory.dmp

Filesize
8KB

Download
memory/1320-66-0x0000000002D90000-0x000000000384A000-memory.dmp

Filesize
10.7MB

Download