kutaki | 3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd

Analysis

max time kernel
72s
max time network
48s
platform
windows7_x64
resource
win7-20220414-en
submitted
01/07/2022, 07:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe
Size

568KB
MD5

609b31697442f224deb7fcd4170e8fd3
SHA1

11aed89fd1a0141fcc4626c1411239e5afe6ee8c
SHA256

3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd
SHA512

aeb9d03cc8feab950ddb36ffab3e68a2eab9fd31ab4da01236ee8e539d4078ac92d28ef7245a346a331324cd3aea20f3f18322f8371153ca93ac4b5c94aa724c

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 3 IoCs

resource	yara_rule
behavioral1/files/0x000a000000003c9f-58.dat	family_kutaki
behavioral1/files/0x000a000000003c9f-61.dat	family_kutaki
behavioral1/files/0x000a000000003c9f-59.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
1752	pqnarbch.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe

Loads dropped DLL 2 IoCs

pid	Process
1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe
1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.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	pqnarbch.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	pqnarbch.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
1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe
1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe
1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe
1752	pqnarbch.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 112	1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe	29
PID 1628 wrote to memory of 112	1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe	29
PID 1628 wrote to memory of 112	1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe	29
PID 1628 wrote to memory of 112	1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe	29
PID 1628 wrote to memory of 1752	1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe	31
PID 1628 wrote to memory of 1752	1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe	31
PID 1628 wrote to memory of 1752	1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe	31
PID 1628 wrote to memory of 1752	1628	3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe	31

C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe
"C:\Users\Admin\AppData\Local\Temp\3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:112
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pqnarbch.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Suspicious use of SetWindowsHookEx
  PID:1752

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
568KB

MD5
609b31697442f224deb7fcd4170e8fd3

SHA1
11aed89fd1a0141fcc4626c1411239e5afe6ee8c

SHA256
3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd

SHA512
aeb9d03cc8feab950ddb36ffab3e68a2eab9fd31ab4da01236ee8e539d4078ac92d28ef7245a346a331324cd3aea20f3f18322f8371153ca93ac4b5c94aa724c

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

Filesize
568KB

MD5
609b31697442f224deb7fcd4170e8fd3

SHA1
11aed89fd1a0141fcc4626c1411239e5afe6ee8c

SHA256
3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd

SHA512
aeb9d03cc8feab950ddb36ffab3e68a2eab9fd31ab4da01236ee8e539d4078ac92d28ef7245a346a331324cd3aea20f3f18322f8371153ca93ac4b5c94aa724c

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

Filesize
568KB

MD5
609b31697442f224deb7fcd4170e8fd3

SHA1
11aed89fd1a0141fcc4626c1411239e5afe6ee8c

SHA256
3e6593faa630ec2c87ff8406f08264bb055982363400fddeaca502b0019ce6fd

SHA512
aeb9d03cc8feab950ddb36ffab3e68a2eab9fd31ab4da01236ee8e539d4078ac92d28ef7245a346a331324cd3aea20f3f18322f8371153ca93ac4b5c94aa724c

Download Submit
memory/1628-56-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download