1619c0ac9446408cb9ef09c2aeceee06883a9dc3ee527f6aa302436a5709a04d

Analysis

max time kernel
6s
max time network
14s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/10/2024, 06:30

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General

Target

builder.py
Size

47KB
MD5

6244204ef58c4de2e459f9a4bb520635
SHA1

fe74e028e4528147cfa7a657cbe091bf6c565d27
SHA256

1619c0ac9446408cb9ef09c2aeceee06883a9dc3ee527f6aa302436a5709a04d
SHA512

e20911eeb1abba404f41eec215aa3e4f8eb4e0725131541462dd40290a34cae4f0f8ff3d50f7f176c796d37a8cbcde0edaeffa85cc6611cf0ae2f2d0e131552c
SSDEEP

768:ZIWv2dyd4tCyGdHXYHg8VShYVh9Fbedxkk2zWtZkfb:ZIWvkGd0gWyY/bbedxj2zqZkfb

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 12 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\py_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\py_auto_file\shell\open\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\py_auto_file\shell\open	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\py_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\.py	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\py_auto_file\shell\edit	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\py_auto_file\shell\edit\command	rundll32.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2312	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 2728	3000	cmd.exe	31
PID 3000 wrote to memory of 2728	3000	cmd.exe	31
PID 3000 wrote to memory of 2728	3000	cmd.exe	31
PID 2728 wrote to memory of 2312	2728	rundll32.exe	32
PID 2728 wrote to memory of 2312	2728	rundll32.exe	32
PID 2728 wrote to memory of 2312	2728	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\builder.py
1⤵
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\builder.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\builder.py
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:2312

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

Windows 7 deprecation

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