kutaki | 62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462

General

Target
62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
Size 1.1MB
Sample220603-sfl55seefn
SHA256 62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462
MD5 bdfe1051fc246f74193f5e5c8749b7ec
SHA1 78a61790dccb94853e233ec1f75db3ee6055b5de
SHA512 e1d1c9ce40de4e922f0a5c1bad4f565251fc3bc6d9e763b1d027f9a00edee9589c094a0586e9d87a49c3f6812e2ca4e6d7777f171502583dcc215900fc851de7
MD5 SHA1 SHA512

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 2 IoCs

resource	yara_rule
behavioral2/files/0x00030000000006d3-135.dat	family_kutaki
behavioral2/files/0x00030000000006d3-134.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
2884	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

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

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1100	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
1100	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
1100	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
2884	hyuder.exe
2884	hyuder.exe
2884	hyuder.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 3944	1100	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	38
PID 1100 wrote to memory of 3944	1100	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	38
PID 1100 wrote to memory of 3944	1100	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	38
PID 1100 wrote to memory of 2884	1100	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	41
PID 1100 wrote to memory of 2884	1100	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	41
PID 1100 wrote to memory of 2884	1100	62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe	41

C:\Users\Admin\AppData\Local\Temp\62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe
"C:\Users\Admin\AppData\Local\Temp\62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:3944
- 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
  - Suspicious use of SetWindowsHookEx
  PID:2884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

hyuder.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
Size 1.1MB
SHA256 62e4ce478f0bc615d11257a09a9ed68ae42c2ada0e4c62c548f1245befa04462
MD5 bdfe1051fc246f74193f5e5c8749b7ec
SHA1 78a61790dccb94853e233ec1f75db3ee6055b5de
SHA512 e1d1c9ce40de4e922f0a5c1bad4f565251fc3bc6d9e763b1d027f9a00edee9589c094a0586e9d87a49c3f6812e2ca4e6d7777f171502583dcc215900fc851de7
SSDEEP 12288:QNjSqb8QKcLVrsJQHGQ9pGPqlSpwhm4s5bsGSCs5:+vfLL+JQHGQ9rlSpnHuGE5
MD5 SHA1 SHA512 SSDEEP

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