Analysis
- max time kernel
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
27/10/2026, 00:52
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
Built_Stub.exe
Resource
win10v2004-20260911-en
4 signatures
150 seconds
General
- Target Built_Stub.exe
- Size 2.0MB
- Sample261027-a785wacd25
- SHA256 74c659f8af2e3aa0100817b4f2ede827197272d279c6b7dbc876c7e29a9aef9a
- MD5 3e0ff53420da6bf5cf78f01246526aad
- SHA1 c6926c343a870eb5fdfd2efe757b2e6cf4d79da6
- SHA512 e3cce1fd4895bab7376b7a6f01879127f41eb7eeff116331b57fbfde41977b92d197bfbb9b932d5388a5ab67d216371e8a8eed383ba4e388b3d9d0b12071ace1
- SSDEEP 49152:BqYZjz21D5f9nLuoyUyOVPCTmyPoanC8Cm3mqDI/kHk8EYwh1ESoCK:Bfd21D5fJLuoyUyOVPfyFnCZGmcI/kEi
- TLSH T10CA5BF113EA59E1867DCF3DE0B99816D2BFC3B84F3F460254C1688EEC650F52A99864F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Detects SiriusRAT 1 IoCs
resource yara_rule behavioral2/memory/1092-2-0x0000000004B10000-0x0000000004D13000-memory.dmp family_siriusrat - Program crash 1 IoCs
pid pid_target Process procid_target 4848 1092 WerFault.exe 88 - 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 Built_Stub.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Built_Stub.exe"C:\Users\Admin\AppData\Local\Temp\Built_Stub.exe"1⤵
- System Location Discovery: System Language Discovery
PID:1092 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1092 -s 8402⤵
- Program crash
PID:4848
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1092 -ip 10921⤵PID:4896