kutaki | 7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1

Analysis

max time kernel
155s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
31/07/2022, 05:12

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General

Target

7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe
Size

724KB
MD5

122e0e9fc5119d3e9f075f36b594c70c
SHA1

79849b0335bd1a85fd91c4e81422ee0376ab89b3
SHA256

7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1
SHA512

f2925dbb618a0ad33f5d5f376e76079cee6c1772ea8b29c82f6f6d203f2600ea1badcf0136291e8dd8aee34189adb20668b4faf999408351bfb91ad91ffbb5a4

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://maregatu.club/paapoo/pove.php

http://terebinnahi.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/0x000a000000022f2a-134.dat	family_kutaki
behavioral2/files/0x000a000000022f2a-135.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
2156	fmyzurch.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fmyzurch.exe	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fmyzurch.exe	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	fmyzurch.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	fmyzurch.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
4348	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe
4348	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe
4348	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe
2156	fmyzurch.exe
2156	fmyzurch.exe
2156	fmyzurch.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4348 wrote to memory of 4356	4348	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe	82
PID 4348 wrote to memory of 4356	4348	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe	82
PID 4348 wrote to memory of 4356	4348	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe	82
PID 4348 wrote to memory of 2156	4348	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe	89
PID 4348 wrote to memory of 2156	4348	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe	89
PID 4348 wrote to memory of 2156	4348	7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe	89

C:\Users\Admin\AppData\Local\Temp\7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe
"C:\Users\Admin\AppData\Local\Temp\7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4348
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:4356
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fmyzurch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fmyzurch.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Suspicious use of SetWindowsHookEx
  PID:2156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

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\fmyzurch.exe

Filesize
724KB

MD5
122e0e9fc5119d3e9f075f36b594c70c

SHA1
79849b0335bd1a85fd91c4e81422ee0376ab89b3

SHA256
7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1

SHA512
f2925dbb618a0ad33f5d5f376e76079cee6c1772ea8b29c82f6f6d203f2600ea1badcf0136291e8dd8aee34189adb20668b4faf999408351bfb91ad91ffbb5a4

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fmyzurch.exe

Filesize
724KB

MD5
122e0e9fc5119d3e9f075f36b594c70c

SHA1
79849b0335bd1a85fd91c4e81422ee0376ab89b3

SHA256
7a66212137146efd89a165b9d58fb49ee33fbd7c642e3fa216d626ef52f7ddb1

SHA512
f2925dbb618a0ad33f5d5f376e76079cee6c1772ea8b29c82f6f6d203f2600ea1badcf0136291e8dd8aee34189adb20668b4faf999408351bfb91ad91ffbb5a4

Download Submit