Analysis
- max time kernel
148s - max time network
143s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
03/08/2026, 23:55
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
dynamic_syscall_loader.exe
Resource
win10v2004-20260513-en
4 signatures
150 seconds
Behavioral task
behavioral2
Sample
dynamic_syscall_loader.exe
Resource
win11ltsc2024-20260709-en
4 signatures
150 seconds
General
- Target dynamic_syscall_loader.exe
- Size 2.5MB
- Sample260803-3ymjqszape
- SHA256 1306e0d409eb4bbeb81173ae14f26dab6ce1cc546d1837da74a48dc5f80d9011
- MD5 3825eb54df76215fdfdef10f0597f187
- SHA1 63459bc5a0d71843d29843700b2d615712a61495
- SHA512 6ef4602dc2ce5fab7d72cb822c1d4a8de627b8c986c961e42014d732795c51839fc2cea52b0ee1b613c345e30caaac2d017644abe6926d3b3e8164cd246d3e9f
- SSDEEP 49152:qDD+XmWGXuk91tzQtlwK5JubwoQg+dmfvZkeGW1IvyjWA:VZLYbQvyjW
- TLSH T177C529217B5999EEC54AC074C28786726A7270CF0F34BAFF458496383E6AAF51F3C254
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
- Detects DonutLoader 1 IoCs
resource yara_rule behavioral2/memory/3796-4-0x000002CA0C950000-0x000002CA0D5C0000-memory.dmp family_donutloader - Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
flow ioc 2 raw.githubusercontent.com 1 raw.githubusercontent.com - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 dynamic_syscall_loader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString dynamic_syscall_loader.exe