kutaki | 0d3cf290f14c09e02aa3cea0c711e01955131d829cf7369b1f2dba351ba49d76

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20/09/2024, 23:12

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General

Target
ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe
Size 499KB
Sample240920-26v1eatekr
SHA256 0d3cf290f14c09e02aa3cea0c711e01955131d829cf7369b1f2dba351ba49d76
MD5 ee9d608c58f615144948a76f0c271dda
SHA1 f95fcd18d45361e61b6947c4002e10b714b12127
SHA512 32c45c057f1cdbf85085fb07cd490489acbf44d17dd6985141145807e441d8837c0be2650c664e1aaef39da968131435ebdf01446f064167ad42929f2d8dc503
SSDEEP 6144:OkseWcMsj1E+6VVPviDlSOcwhxAwOhgYwjtsFQ2E8QX/GSZnBCZi5:IerpGPqlSpwhm4s5bsGSCs5
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

kutaki discovery keylogger stealer

Malware Config

Signatures

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

Kutaki Executable 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000234c1-5.dat	family_kutaki

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4232	lunlerio.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	lunlerio.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	lunlerio.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lunlerio.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3472	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe
3472	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe
3472	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe
4232	lunlerio.exe
4232	lunlerio.exe
4232	lunlerio.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 3488	3472	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe	82
PID 3472 wrote to memory of 3488	3472	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe	82
PID 3472 wrote to memory of 3488	3472	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe	82
PID 3472 wrote to memory of 4232	3472	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe	92
PID 3472 wrote to memory of 4232	3472	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe	92
PID 3472 wrote to memory of 4232	3472	ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe	92

C:\Users\Admin\AppData\Local\Temp\ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ee9d608c58f615144948a76f0c271dda_JaffaCakes118.exe"
1⤵
- Drops startup file
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3472
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3488
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

lunlerio.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
Size 499KB
SHA256 0d3cf290f14c09e02aa3cea0c711e01955131d829cf7369b1f2dba351ba49d76
MD5 ee9d608c58f615144948a76f0c271dda
SHA1 f95fcd18d45361e61b6947c4002e10b714b12127
SHA512 32c45c057f1cdbf85085fb07cd490489acbf44d17dd6985141145807e441d8837c0be2650c664e1aaef39da968131435ebdf01446f064167ad42929f2d8dc503
SSDEEP 6144:OkseWcMsj1E+6VVPviDlSOcwhxAwOhgYwjtsFQ2E8QX/GSZnBCZi5:IerpGPqlSpwhm4s5bsGSCs5
MD5 SHA1 SHA512 SSDEEP

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