kutaki | b6c1798151f3fab27920c3d9e00a67b35df3d814a294701b3eec962aba6bd201

Analysis

max time kernel
184s
max time network
181s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21/05/2022, 11:34

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General

Target

image.exe
Size

536KB
MD5

76430208466ca619a470ab10e9ce6848
SHA1

a7730a38f002dfe4e59a26ec2cc46fdc422e2708
SHA256

5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5
SHA512

cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b

Score

10^/10

kutaki keylogger stealer

Malware Config

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/0x000a0000000006db-135.dat	family_kutaki
behavioral2/files/0x000a0000000006db-134.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
4712	eppjldch.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe	image.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe	image.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
5116	image.exe
5116	image.exe
5116	image.exe
4712	eppjldch.exe
4712	eppjldch.exe
4712	eppjldch.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5116 wrote to memory of 4764	5116	image.exe	81
PID 5116 wrote to memory of 4764	5116	image.exe	81
PID 5116 wrote to memory of 4764	5116	image.exe	81
PID 5116 wrote to memory of 4712	5116	image.exe	83
PID 5116 wrote to memory of 4712	5116	image.exe	83
PID 5116 wrote to memory of 4712	5116	image.exe	83

C:\Users\Admin\AppData\Local\Temp\image.exe
"C:\Users\Admin\AppData\Local\Temp\image.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5116
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:4764
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4712

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\eppjldch.exe

Filesize
536KB

MD5
76430208466ca619a470ab10e9ce6848

SHA1
a7730a38f002dfe4e59a26ec2cc46fdc422e2708

SHA256
5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5

SHA512
cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b

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

Filesize
536KB

MD5
76430208466ca619a470ab10e9ce6848

SHA1
a7730a38f002dfe4e59a26ec2cc46fdc422e2708

SHA256
5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5

SHA512
cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b

Download Submit