Analysis
- max time kernel
148s - max time network
131s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260618-en - resource tags
- submitted
24/06/2026, 16:26
General
- Target build.exe
- Size 1.5MB
- Sample260624-txmnnsdv6v
- SHA256 3399703c0503e6f1a42ea2e848cf209e010f488e942fa2d11b89e08b9ea02c59
Malware Config
Extracted
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stealerium
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https://discord.com/api/webhooks/1519375494859194439/JM6vpBzAifNgyC2aqkflSxEsVT7s9yv-TepAKGS6u9KNaJ9k6LUmyhVkSp5R-UFXjOWu
Signatures
- Family: Stealerium
An open source info stealer written in C# first seen in May 2022.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
- System Location Discovery: System Language Discovery 1 TTPs 12 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- 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.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Kills process with taskkill 1 IoCs
- Suspicious behavior: EnumeratesProcesses 32 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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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
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\netsh.exenetsh wlan show profile3⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
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C:\Windows\SysWOW64\findstr.exefindstr All3⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\netsh.exenetsh wlan show networks mode=bssid3⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpD43B.tmp.bat2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\taskkill.exeTaskKill /F /IM 21083⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\timeout.exeTimeout /T 2 /Nobreak3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
Bookmarks.txt
OneDrive.txt
Startup.txt
Videos.txt
Apps.txt
Apps.txt
Apps.txt
Process.txt
msgid.dat
Stealerium-Latest.log
tmpD43B.tmp.bat
memory/2108-27-0x0000000007F60000-0x000000000851A000-memory.dmp
memory/2108-80-0x00000000743C0000-0x0000000074B7C000-memory.dmp
memory/2108-158-0x00000000070C0000-0x000000000713A000-memory.dmp
memory/2108-63-0x00000000743D2000-0x00000000743D3000-memory.dmp
memory/2108-0-0x00000000743D2000-0x00000000743D3000-memory.dmp
memory/2108-21-0x0000000007900000-0x0000000007992000-memory.dmp
memory/2108-3-0x00000000743C0000-0x0000000074B7C000-memory.dmp
memory/2108-207-0x00000000071E0000-0x0000000007290000-memory.dmp
memory/2108-208-0x0000000007040000-0x0000000007062000-memory.dmp
memory/2108-209-0x0000000007AE0000-0x0000000007E3B000-memory.dmp
memory/2108-2-0x0000000005B40000-0x0000000005BA6000-memory.dmp
memory/2108-1-0x0000000000EA0000-0x0000000001026000-memory.dmp
memory/2108-220-0x00000000743C0000-0x0000000074B7C000-memory.dmp