kutaki | 6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f

Analysis

max time kernel
149s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26-02-2024 11:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Challan.exe
Size

573KB
MD5

111d37dd39bb7f73b76eb13e22a16178
SHA1

c358557e24b87ae758606d707763bfa95da88a61
SHA256

6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f
SHA512

31b0424ce110261af02c23c94a60659301ba6eacc4223578b04fe1fc815f4eb41f7d899f6322e642a6df62e88580a4d70131a01500ebe12b9ffa46d9e7232bf4
SSDEEP

12288:Ua4NFT8ElW46A9jmP/uhu/yMS08CkntxYRtqL:J6YahfmP/UDMS08Ckn3v

Score

10^/10

kutaki keylogger stealer

Malware Config

Extracted

Family

kutaki

http://linkwotowoto.club/new/two.php

Signatures

Kutaki
Information stealer and keylogger that hides inside legitimate Visual Basic applications.
stealer keylogger kutaki

Kutaki Executable 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xbtrtdfk.exe	family_kutaki

Drops startup file 2 IoCs

Processes:

Challan.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xbtrtdfk.exe	Challan.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xbtrtdfk.exe	Challan.exe

Executes dropped EXE 1 IoCs

Processes:

xbtrtdfk.exe

pid process

2956 xbtrtdfk.exe
Loads dropped DLL 2 IoCs

Processes:

Challan.exe

pid process

2740 Challan.exe
2740 Challan.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

DllHost.exe

pid process

2636 DllHost.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

Challan.exexbtrtdfk.exe

pid process

2740 Challan.exe
2740 Challan.exe
2740 Challan.exe
2956 xbtrtdfk.exe
2956 xbtrtdfk.exe
2956 xbtrtdfk.exe

pid	process
2956	xbtrtdfk.exe

pid	process
2740	Challan.exe
2740	Challan.exe

pid	process
2636	DllHost.exe

pid	process
2740	Challan.exe
2740	Challan.exe
2740	Challan.exe
2956	xbtrtdfk.exe
2956	xbtrtdfk.exe
2956	xbtrtdfk.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Challan.exe

description	pid	process	target process
PID 2740 wrote to memory of 1624	2740	Challan.exe	cmd.exe
PID 2740 wrote to memory of 1624	2740	Challan.exe	cmd.exe
PID 2740 wrote to memory of 1624	2740	Challan.exe	cmd.exe
PID 2740 wrote to memory of 1624	2740	Challan.exe	cmd.exe
PID 2740 wrote to memory of 2956	2740	Challan.exe	xbtrtdfk.exe
PID 2740 wrote to memory of 2956	2740	Challan.exe	xbtrtdfk.exe
PID 2740 wrote to memory of 2956	2740	Challan.exe	xbtrtdfk.exe
PID 2740 wrote to memory of 2956	2740	Challan.exe	xbtrtdfk.exe

C:\Users\Admin\AppData\Local\Temp\Challan.exe
"C:\Users\Admin\AppData\Local\Temp\Challan.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2740

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
2⤵
PID:1624

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xbtrtdfk.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xbtrtdfk.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2956

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:2636

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xbtrtdfk.exe
Filesize
573KB

MD5
111d37dd39bb7f73b76eb13e22a16178

SHA1
c358557e24b87ae758606d707763bfa95da88a61

SHA256
6492086998bb2a858614dc2310e2349d5a282eadc5a08376c1111dca7d765c7f

SHA512
31b0424ce110261af02c23c94a60659301ba6eacc4223578b04fe1fc815f4eb41f7d899f6322e642a6df62e88580a4d70131a01500ebe12b9ffa46d9e7232bf4

Download Submit
memory/1624-62-0x00000000005F0000-0x00000000005F2000-memory.dmp

Filesize
8KB

Download
memory/2636-63-0x00000000001E0000-0x00000000001E2000-memory.dmp

Filesize
8KB

Download
memory/2636-64-0x00000000007B0000-0x00000000007B1000-memory.dmp

Filesize
4KB

Download
memory/2636-65-0x00000000007B0000-0x00000000007B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads