kutaki | 62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462

General

Target

62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
Size

1.1MB
MD5

bdfe1051fc246f74193f5e5c8749b7ec
SHA1

78a61790dccb94853e233ec1f75db3ee6055b5de
SHA256

62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462
SHA512

e1d1c9ce40de4e922f0a5c1bad4f565251fc3bc6d9e763b1d027f9a00edee9589c094a0586e9d87a49c3f6812e2ca4e6d7777f171502583dcc215900fc851de7

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 4 IoCs

resource	yara_rule
behavioral1/files/0x000d000000005ba9-58.dat	family_kutaki
behavioral1/files/0x000d000000005ba9-59.dat	family_kutaki
behavioral1/files/0x000d000000005ba9-61.dat	family_kutaki
behavioral1/files/0x000d000000005ba9-66.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
1424	hyuder.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe

Loads dropped DLL 2 IoCs

pid	Process
536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.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	hyuder.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	hyuder.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Main	hyuder.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
1424	hyuder.exe
1424	hyuder.exe
1424	hyuder.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 836	536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	28
PID 536 wrote to memory of 836	536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	28
PID 536 wrote to memory of 836	536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	28
PID 536 wrote to memory of 836	536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	28
PID 536 wrote to memory of 1424	536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	30
PID 536 wrote to memory of 1424	536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	30
PID 536 wrote to memory of 1424	536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	30
PID 536 wrote to memory of 1424	536	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	30

C:\Users\Admin\AppData\Local\Temp\62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
"C:\Users\Admin\AppData\Local\Temp\62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:536
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:836
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1424

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

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\hyuder.exe

Filesize
1.1MB

MD5
bdfe1051fc246f74193f5e5c8749b7ec

SHA1
78a61790dccb94853e233ec1f75db3ee6055b5de

SHA256
62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462

SHA512
e1d1c9ce40de4e922f0a5c1bad4f565251fc3bc6d9e763b1d027f9a00edee9589c094a0586e9d87a49c3f6812e2ca4e6d7777f171502583dcc215900fc851de7

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

Filesize
1.1MB

MD5
bdfe1051fc246f74193f5e5c8749b7ec

SHA1
78a61790dccb94853e233ec1f75db3ee6055b5de

SHA256
62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462

SHA512
e1d1c9ce40de4e922f0a5c1bad4f565251fc3bc6d9e763b1d027f9a00edee9589c094a0586e9d87a49c3f6812e2ca4e6d7777f171502583dcc215900fc851de7

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

Filesize
1.1MB

MD5
bdfe1051fc246f74193f5e5c8749b7ec

SHA1
78a61790dccb94853e233ec1f75db3ee6055b5de

SHA256
62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462

SHA512
e1d1c9ce40de4e922f0a5c1bad4f565251fc3bc6d9e763b1d027f9a00edee9589c094a0586e9d87a49c3f6812e2ca4e6d7777f171502583dcc215900fc851de7

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

Filesize
1.1MB

MD5
bdfe1051fc246f74193f5e5c8749b7ec

SHA1
78a61790dccb94853e233ec1f75db3ee6055b5de

SHA256
62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462

SHA512
e1d1c9ce40de4e922f0a5c1bad4f565251fc3bc6d9e763b1d027f9a00edee9589c094a0586e9d87a49c3f6812e2ca4e6d7777f171502583dcc215900fc851de7

Download Submit
memory/536-56-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

Download
memory/1424-65-0x0000000003C01000-0x0000000004AAD000-memory.dmp

Filesize
14.7MB

Download

Analysis

Sharing