Analysis
- user interaction
yes - max time kernel
150s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
12/10/2026, 23:25
Behavioral task
behavioral1
Sample
Oyster.Detector.v1.1.7.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
Oyster.Detector.v1.1.7.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
Behavioral task
behavioral3
Sample
gui.pyc
Resource
win10v2004-20260911-en
5 signatures
150 seconds
Behavioral task
behavioral4
Sample
gui.pyc
Resource
win11ltsc2024-20260911-en
4 signatures
150 seconds
General
- Target gui.pyc
- Size 564KB
- Sample261012-3ea2laswhx
- SHA256 bfe0e543837be02c1a3e686a6acbadc99b8bc476fd2440b91c4be6c063683279
- MD5 4bc23d732c357bb59df1cde234cfe95a
- SHA1 ccf46e61e298386249c669f4287fd67c25838f6a
- SHA512 95d3d557966f879679e34dd3119d9ae03e95215c5ce886fdfcee066dcbc40f87044a4181c2a5c173dcba159f769e203fa17115f879291d85947918d4d46c4fa4
- SSDEEP 6144:s8N5/l1Hrlk/zVzU6M7KkQDLsu8Q4bf9tc4f85U/YHQrQC/:sE1HrCrVzU6Jku8xDeQrQC/
- TLSH T121C4F65BA4309926EF64707540E94480E37E2EC2B724C233751F4BB97DCA6BADEA530D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
3/10
Malware Config
Signatures
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 5008 cmd.exe - Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-939655444-3071939294-1401108526-1000_Classes\Local Settings cmd.exe Key created \REGISTRY\USER\S-1-5-21-939655444-3071939294-1401108526-1000_Classes\Local Settings OpenWith.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4988 OpenWith.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4988 OpenWith.exe
Processes
-
C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\gui.pyc1⤵
- Executes a command shell one-liner
- Modifies registry class
PID:5008
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:4988