d5395f121277d2b38f4173c7df0a20a3de99edfcfe2aa697080cc81170eb76ab

Resubmissions

09/03/2025, 01:58

250309-cdv29swybs 10

08/03/2025, 06:55

250308-hp35xatjt9 10

08/03/2025, 04:53

250308-fh1ebssky5 10

Analysis

max time kernel
7s
max time network
12s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
09/03/2025, 01:58

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Reason

Machine shutdown

Report Analysis Logs

General

Target

My-Skidded-malwares-main/Rias.exe
Size

846KB
MD5

f8f811ccb9afad9bca6d6e7d0628f9ad
SHA1

eafa751da7d1081de2e4e42ffba74ceefb2480a1
SHA256

b9b2f46a9253743f3f6a8f13fe76ae0ae14390bae49318e72de49e78eca532e2
SHA512

424eff8121080df371e6d7fefa36fef0f2d7079c733fe1eeffcc3a42758cb355f200f62761d00af75d1b4e1bb32278ad0689b4183b68f338f4752ba50f4bdb10
SSDEEP

12288:VDbpr2trUqUeBhfUHzXC+cHJ8XeSb++6naTxvUdDOT206NQsBq/rS:VDdsrsG5UHulCXR+PaTxOA2fNQLr

Score

6^/10

bootkit discovery persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CustomMBR = "C:\\Users\\Admin\\AppData\\Local\\Temp\\My-Skidded-malwares-main\\Rias.exe -BypassWarning"	Rias.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	Rias.exe

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Rias.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2344	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2976	Rias.exe
2976	Rias.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2976	Rias.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2976	Rias.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 2344	2976	Rias.exe	86
PID 2976 wrote to memory of 2344	2976	Rias.exe	86
PID 2976 wrote to memory of 2344	2976	Rias.exe	86

C:\Users\Admin\AppData\Local\Temp\My-Skidded-malwares-main\Rias.exe
"C:\Users\Admin\AppData\Local\Temp\My-Skidded-malwares-main\Rias.exe"
1⤵
- Adds Run key to start application
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Windows\SysWOW64\schtasks.exe
  schtasks.exe /Create /TN CustomMBR /ru SYSTEM /SC ONSTART /TR "C:\Users\Admin\AppData\Local\Temp\My-Skidded-malwares-main\Rias.exe -BypassWarning"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2344