1d6561c4714fadf16bcfb244a5444a959a953424d8e2c6acca6ccb2e20117e74

Analysis

max time kernel
247s
max time network
203s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 07:17

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General

Target

keygen.exe
Size

31KB
MD5

71c3b2f765b04d0b7ea0328f6ce0c4e2
SHA1

bf8ecb6519f16a4838ceb0a49097bcc3ef30f3c4
SHA256

ea6d4dedd8c85e4a6bb60408a0dc1d56def1f4ad4f069c730dc5431b1c23da37
SHA512

1923db134d7cee25389a07e4d48894dde7ee8f70d008cd890dd34a03b2741a54ec1555e6821755e5af8eae377ef5005e3f9afceb4681059bc1880276e9bcf035
SSDEEP

768:A6+T41GjHbdWCWDwDD01riWpJxKpAQJs/3JGIDLQ5:b+U+hHIBpJxixgQ

Score

3^/10

discovery

Malware Config

Signatures

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

Processes:

keygen.exebuilder.exekeygen.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	keygen.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	keygen.exe

Modifies registry class 1 IoCs

Processes:

OpenWith.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000_Classes\Local Settings OpenWith.exe
Opens file in notepad (likely ransom note) 2 IoCs
ransomware

Processes:

NOTEPAD.EXENOTEPAD.EXE

pid process

4860 NOTEPAD.EXE
848 NOTEPAD.EXE
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

NOTEPAD.EXE

pid process

848 NOTEPAD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000_Classes\Local Settings	OpenWith.exe

pid	process
4860	NOTEPAD.EXE
848	NOTEPAD.EXE

pid	process
848	NOTEPAD.EXE

Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

OpenWith.exe

pid	process
4480	OpenWith.exe
4480	OpenWith.exe
4480	OpenWith.exe
4480	OpenWith.exe
4480	OpenWith.exe
4480	OpenWith.exe
4480	OpenWith.exe
4480	OpenWith.exe
4480	OpenWith.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

OpenWith.exe

description	pid	process	target process
PID 4480 wrote to memory of 848	4480	OpenWith.exe	NOTEPAD.EXE
PID 4480 wrote to memory of 848	4480	OpenWith.exe	NOTEPAD.EXE

C:\Users\Admin\AppData\Local\Temp\keygen.exe
"C:\Users\Admin\AppData\Local\Temp\keygen.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4144

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4372

C:\Users\Admin\AppData\Local\Temp\builder.exe
"C:\Users\Admin\AppData\Local\Temp\builder.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3424

C:\Users\Admin\AppData\Local\Temp\keygen.exe
"C:\Users\Admin\AppData\Local\Temp\keygen.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2904

C:\Users\Admin\AppData\Local\Temp\keygen.exe
"C:\Users\Admin\AppData\Local\Temp\keygen.exe"
1⤵
PID:3356

C:\Windows\System32\NOTEPAD.EXE
"C:\Windows\System32\NOTEPAD.EXE" C:\Users\Admin\Desktop\Build.bat
1⤵
- Opens file in notepad (likely ransom note)
PID:4860

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4480

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\config.json
2⤵
- Opens file in notepad (likely ransom note)
- Suspicious use of FindShellTrayWindow
PID:848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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