Analysis
- max time kernel
150s - max time network
114s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
05/08/2026, 09:14
Static task
static1
Behavioral task
behavioral1
Sample
avast_decryptor_bart.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
General
- Target avast_decryptor_bart.exe
- Size 2.7MB
- Sample260805-k7gezagh49
- SHA256 88c2c432ec456ff48212c81e66842862888ace1105947ade505fd44e1497cb56
- MD5 5d0b40ec5a50a9e91edb505d23a1366e
- SHA1 bfef6c37c47293b24f519c3cf6ba8037f8823a8a
- SHA512 b542b3815afa39b3520ccc84066c2c36dfba7c0d37618f9dc14d7cae120adbdc00ef8c25b32bacc9546cb53078c216bec44fde8e3b4ac815c36d8aa939790ef2
- SSDEEP 49152:kqnIVArEily0M7xOY8dWWRqFITYJFFmL8/LvUzLcdefVCAn:5nQA4ifMQYvdoY7FA8TCnVBn
- TLSH T17DD523503DD84D03F6995A38CA7EBD5A5B1A3FF48C388A5B96727E0D38F719940383A1
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\F: avast_decryptor_bart.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language avast_decryptor_bart.exe - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 5056 avast_decryptor_bart.exe 5056 avast_decryptor_bart.exe - Suspicious use of UnmapMainImage 1 IoCs
pid Process 5056 avast_decryptor_bart.exe
Processes
Network
MITRE ATT&CK Enterprise v16
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1