kutaki | 6f1a46186597a3c90fd56bae547ef7d486d961c33ca73eb613e4186d8b5a371f

Analysis

max time kernel
97s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 11:11

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General

Target

ITC.exe
Size

544KB
MD5

039f072565f5c1a20edbddc6a8cd4b7e
SHA1

0b0577a885f82fd073dc1f86e5ee6e72054030e1
SHA256

83d66249977c93aee45be9aa3e6ccfc2b450c23bc9db6e8e0764ed35e1b5a06e
SHA512

74a08454326688fc944d05ec9d37ee21aa1de2bd5ab5d03c7360bf0245650a083bb8e77fba876475513750154809c437db0fd92b18386fcca98cc3d82cf907fd
SSDEEP

6144:m8ylUOltoMFD95ad/gvlfZPFHrbl3wL0n9/G0GM5JLMKRMWBXd+tPdv5W4Es+CSE:p2YcJmW/+b5B4/8vYjDpK8atfx8hDu

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/0x00090000000134d5-59.dat	family_kutaki
behavioral1/files/0x00090000000134d5-58.dat	family_kutaki
behavioral1/files/0x00090000000134d5-62.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
1144	ch.exe

Drops startup file 2 IoCs

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

Loads dropped DLL 2 IoCs

pid	Process
536	ITC.exe
536	ITC.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
1692	DllHost.exe

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
536	ITC.exe
536	ITC.exe
536	ITC.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe
1144	ch.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 1724	536	ITC.exe	28
PID 536 wrote to memory of 1724	536	ITC.exe	28
PID 536 wrote to memory of 1724	536	ITC.exe	28
PID 536 wrote to memory of 1724	536	ITC.exe	28
PID 536 wrote to memory of 1144	536	ITC.exe	30
PID 536 wrote to memory of 1144	536	ITC.exe	30
PID 536 wrote to memory of 1144	536	ITC.exe	30
PID 536 wrote to memory of 1144	536	ITC.exe	30

C:\Users\Admin\AppData\Local\Temp\ITC.exe
"C:\Users\Admin\AppData\Local\Temp\ITC.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:536
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  PID:1724
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ch.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1144

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:1692

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\ch.exe

Filesize
544KB

MD5
039f072565f5c1a20edbddc6a8cd4b7e

SHA1
0b0577a885f82fd073dc1f86e5ee6e72054030e1

SHA256
83d66249977c93aee45be9aa3e6ccfc2b450c23bc9db6e8e0764ed35e1b5a06e

SHA512
74a08454326688fc944d05ec9d37ee21aa1de2bd5ab5d03c7360bf0245650a083bb8e77fba876475513750154809c437db0fd92b18386fcca98cc3d82cf907fd

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

Filesize
544KB

MD5
039f072565f5c1a20edbddc6a8cd4b7e

SHA1
0b0577a885f82fd073dc1f86e5ee6e72054030e1

SHA256
83d66249977c93aee45be9aa3e6ccfc2b450c23bc9db6e8e0764ed35e1b5a06e

SHA512
74a08454326688fc944d05ec9d37ee21aa1de2bd5ab5d03c7360bf0245650a083bb8e77fba876475513750154809c437db0fd92b18386fcca98cc3d82cf907fd

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

Filesize
544KB

MD5
039f072565f5c1a20edbddc6a8cd4b7e

SHA1
0b0577a885f82fd073dc1f86e5ee6e72054030e1

SHA256
83d66249977c93aee45be9aa3e6ccfc2b450c23bc9db6e8e0764ed35e1b5a06e

SHA512
74a08454326688fc944d05ec9d37ee21aa1de2bd5ab5d03c7360bf0245650a083bb8e77fba876475513750154809c437db0fd92b18386fcca98cc3d82cf907fd

Download Submit
memory/536-56-0x0000000076871000-0x0000000076873000-memory.dmp

Filesize
8KB

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