Overview

overview

10

Static

static

10

build.exe

windows10-2004-x64

10

build.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    106s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/06/2026, 15:36

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    build.exe
  • Size 1.5MB
  • Sample260624-s19ryads41
  • SHA256 08998e78c6c92ce6d668ed199a6e15fb29575930b0cd63b00b7580aa967332f4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwarecollectiondiscoverystealeriumpersistenceprivilege_escalationransomwarespywarestealer

Malware Config

Extracted

Family

  • stealerium

C2

  • https://discord.com/api/webhooks/1519352843222646946/lxOWlhiz3_Ae4jt9FQDhqXqJHbfH9DFViRkYbeAkSSqE02hpSrzw5JiVNN6IvmXgXxV9

Signatures

  • Family: Stealerium

    An open source info stealer written in C# first seen in May 2022.

    stealerstealerium
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • 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.

  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 35 IoCs
  • Suspicious use of AdjustPrivilegeToken 60 IoCs
  • Suspicious use of FindShellTrayWindow 52 IoCs
  • Suspicious use of SendNotifyMessage 41 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\build.exe
    "C:\Users\Admin\AppData\Local\Temp\build.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:3352
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Wi-Fi Discovery
      • Suspicious use of WriteProcessMemory
      PID:1700
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1212
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show profile
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        PID:1216
      • C:\Windows\SysWOW64\findstr.exe
        findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        PID:5196
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2488
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:6132
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show networks mode=bssid
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:5356
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 2984
      2⤵
      • Program crash
      PID:588
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:4696
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:5448
    • C:\Windows\explorer.exe
      explorer.exe /LOADSAVEDWINDOWS
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:3220
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:5812
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:4992
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3352 -ip 3352
    1⤵
      PID:452

    Network

          MITRE ATT&CK Enterprise v16

          Reconnaissance

          Resource Development

          Initial Access

          Execution

          Persistence

          Boot or Logon Autostart Execution

          1
          T1547

          Active Setup

          1
          T1547.014

          Event Triggered Execution

          1
          T1546

          Netsh Helper DLL

          1
          T1546.007

          Privilege Escalation

          Boot or Logon Autostart Execution

          1
          T1547

          Active Setup

          1
          T1547.014

          Event Triggered Execution

          1
          T1546

          Netsh Helper DLL

          1
          T1546.007

          Defense Evasion

          Modify Registry

          2
          T1112

          Credential Access

          Credentials from Password Stores

          1
          T1555

          Credentials from Web Browsers

          1
          T1555.003

          Unsecured Credentials

          1
          T1552

          Credentials In Files

          1
          T1552.001

          Discovery

          Browser Information Discovery

          1
          T1217

          Peripheral Device Discovery

          2
          T1120

          Query Registry

          4
          T1012

          System Information Discovery

          3
          T1082

          System Location Discovery

          1
          T1614

          System Language Discovery

          1
          T1614.001

          System Network Configuration Discovery

          1
          T1016

          Wi-Fi Discovery

          1
          T1016.002

          Lateral Movement

          Collection

          Data from Local System

          1
          T1005

          Email Collection

          1
          T1114

          Command and Control

          Web Service

          1
          T1102

          Exfiltration

          Impact

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          prep_Activatable Class_Hermes_perf.cache
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 599B
          • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          Bookmarks.txt
          • Path C:\Users\Admin\AppData\Local\ae68f2520724cdef7e2cbe29d7f1705f\Admin@RSPIRWED_en-US\Browsers\Firefox\Bookmarks.txt
          • Size 81B
          • SHA256 e5fe7f327ae62df007bd1117aa7f522dbbcd371ec67953f66d786424cb1d7995
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          OneDrive.txt
          • Path C:\Users\Admin\AppData\Local\ae68f2520724cdef7e2cbe29d7f1705f\Admin@RSPIRWED_en-US\Directories\OneDrive.txt
          • Size 25B
          • SHA256 8ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e
          • MD5 SHA1 SHA512
          Submit Download

          Startup.txt
          • Path C:\Users\Admin\AppData\Local\ae68f2520724cdef7e2cbe29d7f1705f\Admin@RSPIRWED_en-US\Directories\Startup.txt
          • Size 24B
          • SHA256 889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483
          • MD5 SHA1 SHA512
          Submit Download

          Videos.txt
          • Path C:\Users\Admin\AppData\Local\ae68f2520724cdef7e2cbe29d7f1705f\Admin@RSPIRWED_en-US\Directories\Videos.txt
          • Size 23B
          • SHA256 a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733
          • MD5 SHA1 SHA512
          Submit Download

          Apps.txt
          • Path C:\Users\Admin\AppData\Local\ae68f2520724cdef7e2cbe29d7f1705f\Admin@RSPIRWED_en-US\System\Apps.txt
          • Size 6KB
          • SHA256 cbeab4fe6a3b7a48307bd492fe29d437c2054a7bc3b9cb6c7f0909b3c6b32185
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          Process.txt
          • Path C:\Users\Admin\AppData\Local\ae68f2520724cdef7e2cbe29d7f1705f\Admin@RSPIRWED_en-US\System\Process.txt
          • Size 4KB
          • SHA256 2676b73fe37179d999bb93787f26e2814177bc944183a248d79db8a963e7934e
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/3352-344-0x0000000006960000-0x00000000069DA000-memory.dmp
          Download

          memory/3352-0-0x0000000074192000-0x0000000074193000-memory.dmp
          Download

          memory/3352-35-0x0000000074192000-0x0000000074193000-memory.dmp
          Download

          memory/3352-19-0x00000000076F0000-0x0000000007CAA000-memory.dmp
          Download

          memory/3352-393-0x0000000074180000-0x000000007493C000-memory.dmp
          Download

          memory/3352-50-0x0000000074180000-0x000000007493C000-memory.dmp
          Download

          memory/3352-392-0x0000000006850000-0x0000000006900000-memory.dmp
          Download

          memory/3352-1-0x0000000000870000-0x00000000009F4000-memory.dmp
          Download

          memory/3352-2-0x00000000054D0000-0x0000000005536000-memory.dmp
          Download

          memory/3352-3-0x0000000074180000-0x000000007493C000-memory.dmp
          Download

          memory/3352-14-0x0000000006F90000-0x0000000007022000-memory.dmp
          Download

          memory/5812-168-0x00000275801E0000-0x00000275802E0000-memory.dmp
          Download

          memory/5812-166-0x00000275801E0000-0x00000275802E0000-memory.dmp
          Download

          memory/5812-176-0x0000027D8D260000-0x0000027D8D360000-memory.dmp
          Download

          memory/5812-174-0x0000027D8CE60000-0x0000027D8CE80000-memory.dmp
          Download

          memory/5812-195-0x0000027D8D0A0000-0x0000027D8D0C0000-memory.dmp
          Download

          memory/5812-212-0x0000027D9D620000-0x0000027D9D640000-memory.dmp
          Download

          memory/5812-167-0x00000275801E0000-0x00000275802E0000-memory.dmp
          Download