a3e83b2e325a775ddd5aa78e8d2cf2c624ed6421dd4b5b16583d39c6ea57f192

Analysis

max time kernel
93s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-09-2024 13:44

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General

Target

YEE.py
Size

65KB
MD5

5a8dfa03997d52974f3d9a04b9e81e84
SHA1

aae67d76ec9ecb64f3a5618a293d91b8610d48e5
SHA256

a3e83b2e325a775ddd5aa78e8d2cf2c624ed6421dd4b5b16583d39c6ea57f192
SHA512

325e81074f339f01ed64103f477b60b67d993ad4c1fb8ab322a4574d62abf2bd86707576c50b5b24ccb5b05aa8d7078d4ab40988e63888c27d8fa9dc0e1e4414
SSDEEP

1536:lorzZ5K4ppw4XQUV09keSxyv3qEhzjhD9K:myIT

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 14 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\py_auto_file	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\py_auto_file\shell	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\py_auto_file\shell\edit\command	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\py_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\Local Settings	cmd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\鵏਀谀N\ = "py_auto_file"	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\鵏਀谀N	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\py_auto_file\shell\edit	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\py_auto_file\shell\open	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\py_auto_file\shell\open\command	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\.py	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\.py\ = "py_auto_file"	OpenWith.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\py_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4028	NOTEPAD.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4756	OpenWith.exe

Suspicious use of SetWindowsHookEx 21 IoCs

pid	Process
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe
4756	OpenWith.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4756 wrote to memory of 4028	4756	OpenWith.exe	98
PID 4756 wrote to memory of 4028	4756	OpenWith.exe	98

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\YEE.py
1⤵
- Modifies registry class
PID:1512

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\YEE.py
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:4028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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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