kutaki | 65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f

General

Target

65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.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

C2

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
behavioral1/files/0x0008000000016da7-4.dat	family_kutaki

Kutaki family
kutaki

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe

Executes dropped EXE 1 IoCs

pid	Process
2340	oxeujkfk.exe

Loads dropped DLL 2 IoCs

pid	Process
2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe
2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.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	oxeujkfk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Internet Explorer\Main	oxeujkfk.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2756	DllHost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe
2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe
2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe
2340	oxeujkfk.exe
2340	oxeujkfk.exe
2340	oxeujkfk.exe
2756	DllHost.exe
2756	DllHost.exe
2756	DllHost.exe
2756	DllHost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2572	2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe	30
PID 2348 wrote to memory of 2572	2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe	30
PID 2348 wrote to memory of 2572	2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe	30
PID 2348 wrote to memory of 2572	2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe	30
PID 2348 wrote to memory of 2340	2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe	32
PID 2348 wrote to memory of 2340	2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe	32
PID 2348 wrote to memory of 2340	2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe	32
PID 2348 wrote to memory of 2340	2348	65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe	32

C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe
"C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:2340

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:2756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\633SXO0D\NewErrorPageTemplate[1]

Filesize
1KB

MD5
cdf81e591d9cbfb47a7f97a2bcdb70b9

SHA1
8f12010dfaacdecad77b70a3e781c707cf328496

SHA256
204d95c6fb161368c795bb63e538fe0b11f9e406494bb5758b3b0d60c5f651bd

SHA512
977dcc2c6488acaf0e5970cef1a7a72c9f9dc6bb82da54f057e0853c8e939e4ab01b163eb7a5058e093a8bc44ecad9d06880fdc883e67e28ac67fee4d070a4cc

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\633SXO0D\dnserrordiagoff[2]

Filesize
1KB

MD5
47f581b112d58eda23ea8b2e08cf0ff0

SHA1
6ec1df5eaec1439573aef0fb96dabfc953305e5b

SHA256
b1c947d00db5fce43314c56c663dbeae0ffa13407c9c16225c17ccefc3afa928

SHA512
187383eef3d646091e9f68eff680a11c7947b3d9b54a78cc6de4a04629d7037e9c97673ac054a6f1cf591235c110ca181a6b69ecba0e5032168f56f4486fff92

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\633SXO0D\errorPageStrings[1]

Filesize
2KB

MD5
e3e4a98353f119b80b323302f26b78fa

SHA1
20ee35a370cdd3a8a7d04b506410300fd0a6a864

SHA256
9466d620dc57835a2475f8f71e304f54aee7160e134ba160baae0f19e5e71e66

SHA512
d8e4d73c76804a5abebd5dbc3a86dcdb6e73107b873175a8de67332c113fb7c4899890bf7972e467866fa4cd100a7e2a10a770e5a9c41cbf23b54351b771dcee

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\633SXO0D\httpErrorPagesScripts[1]

Filesize
8KB

MD5
3f57b781cb3ef114dd0b665151571b7b

SHA1
ce6a63f996df3a1cccb81720e21204b825e0238c

SHA256
46e019fa34465f4ed096a9665d1827b54553931ad82e98be01edb1ddbc94d3ad

SHA512
8cbf4ef582332ae7ea605f910ad6f8a4bc28513482409fa84f08943a72cac2cf0fa32b6af4c20c697e1fac2c5ba16b5a64a23af0c11eefbf69625b8f9f90c8fa

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

Filesize
1.0MB

MD5
c884ae57f21fbee98f3327583a408412

SHA1
de718911e64d84670c48095febab54d4f130f3cf

SHA256
65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f

SHA512
aa545b01561628aacf03b2e0e131fda681707a52ce4a2e051b0d3946bf776630bc097ffc5c957fa68077b5b445540fa8c28c4aa8f5f686f1aee8f5a6e841a668

Download Submit
memory/2340-64-0x0000000004870000-0x00000000058D2000-memory.dmp

Filesize
16.4MB

Download
memory/2572-62-0x00000000002C0000-0x00000000002C2000-memory.dmp

Filesize
8KB

Download
memory/2756-63-0x0000000000130000-0x0000000000132000-memory.dmp

Filesize
8KB

Download

Analysis

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