kutaki | 65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-11-2024 20:13

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General

Target

HDFCPayment.exe
Size

1.0MB
MD5

c884ae57f21fbee98f3327583a408412
SHA1

de718911e64d84670c48095febab54d4f130f3cf
SHA256

65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f
SHA512

aa545b01561628aacf03b2e0e131fda681707a52ce4a2e051b0d3946bf776630bc097ffc5c957fa68077b5b445540fa8c28c4aa8f5f686f1aee8f5a6e841a668
SSDEEP

24576:LtVdLmI1ppy9ABspxs140l665y38kQkILfmP/UDMS08Ckn3C:xLxM9ABspxs115fmP/SA8NS

Score

10^/10

kutaki discovery keylogger stealer

Malware Config

Extracted

Family

kutaki

http://newlinkwotolove.club/love/three.php

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/0x0007000000023ca8-5.dat	family_kutaki

Kutaki family
kutaki

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	cmd.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
3448	vasiljfk.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	mspaint.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 4 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mspaint.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HDFCPayment.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vasiljfk.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4376	mspaint.exe
4376	mspaint.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
4832	HDFCPayment.exe
4832	HDFCPayment.exe
4832	HDFCPayment.exe
3448	vasiljfk.exe
3448	vasiljfk.exe
3448	vasiljfk.exe
4376	mspaint.exe
4376	mspaint.exe
4376	mspaint.exe
4376	mspaint.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 4108	4832	HDFCPayment.exe	85
PID 4832 wrote to memory of 4108	4832	HDFCPayment.exe	85
PID 4832 wrote to memory of 4108	4832	HDFCPayment.exe	85
PID 4832 wrote to memory of 3448	4832	HDFCPayment.exe	88
PID 4832 wrote to memory of 3448	4832	HDFCPayment.exe	88
PID 4832 wrote to memory of 3448	4832	HDFCPayment.exe	88
PID 4108 wrote to memory of 4376	4108	cmd.exe	89
PID 4108 wrote to memory of 4376	4108	cmd.exe	89
PID 4108 wrote to memory of 4376	4108	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\HDFCPayment.exe
"C:\Users\Admin\AppData\Local\Temp\HDFCPayment.exe"
1⤵
- Drops startup file
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4108
- - C:\Windows\SysWOW64\mspaint.exe
    "C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp"
    3⤵
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:4376
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vasiljfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vasiljfk.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3448

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:3156

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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

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

Filesize
1.0MB

MD5
c884ae57f21fbee98f3327583a408412

SHA1
de718911e64d84670c48095febab54d4f130f3cf

SHA256
65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f

SHA512
aa545b01561628aacf03b2e0e131fda681707a52ce4a2e051b0d3946bf776630bc097ffc5c957fa68077b5b445540fa8c28c4aa8f5f686f1aee8f5a6e841a668

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