Overview

overview

10

Static

static

10

Antarctida...ke.exe

windows10-ltsc_2021-x64

10

Analysis

  • max time kernel
    298s
  • max time network
    299s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    10/08/2026, 12:52

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General

  • Target
    Antarctida_0iez3r7dvoke.exe
  • Size 256KB
  • Sample260810-p4cd3ahn9x
  • SHA256 182c0121dde56822a0f5c534d9255a65d6939cca77ea4547cff89642774f32ae
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
collectiondefense_evasiondiscoveryexecutionantarctida_stealerpersistenceprivilege_escalationspywarestealer

Malware Config

Extracted

Family

  • antarctida_stealer

Mutex

  • 3FBJ1HOTYPRIUF6Z24AO2CY9JULRX9SCTQLVPZQD68P7GN67UPQRSU9EP6T35FOC

Attributes
  • Wifi

    true

  • bot_token

    MTUzNTUzMzM2NDY1NDkwMzMyNw.GC00TX.zkSSnoV2fCJiKctcOcji5lp4RezMHb1D5AYYpY

  • browsers

    true

  • chat_id

    1377275097433243738

  • crypto

    true

  • gaming

    true

  • grabber

    true

  • hide

    true

  • hosts

    true

  • mail

    true

  • messengers

    true

  • mutex

    3FBJ1HOTYPRIUF6Z24AO2CY9JULRX9SCTQLVPZQD68P7GN67UPQRSU9EP6T35FOC

  • netstat

    true

  • process_dump

    true

  • product_key

    true

  • screenshot

    true

  • sockets

    true

  • sys_info

    true

Signatures

  • Family: AntarctidaStealer

    AntarctidaStealer is an Windows stealer written in C#.

    stealerantarctida_stealer
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

    spywarestealer
  • 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
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 1 TTPs 2 IoCs

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

    discovery
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 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
  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 7 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 1 IoCs

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

    discovery
  • System Network Connections Discovery 1 TTPs 1 IoCs

    Attempt to get a listing of network connections.

    discovery
  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • outlook_office_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Antarctida_0iez3r7dvoke.exe
    "C:\Users\Admin\AppData\Local\Temp\Antarctida_0iez3r7dvoke.exe"
    1⤵
    • Drops file in Drivers directory
    • Accesses Microsoft Outlook profiles
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    PID:4828
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "ObYf4q1RLzCY" /tr "\"C:\Users\Admin\AppData\Local\9ZXMECArFdIh\JlN8XoZxG5t2.exe\"" /sc onlogon /rl highest /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:5084
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\e9635b820e8341588b7ec55a7d8a64f7.bat"
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5628
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 2 /nobreak
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:3808
    • C:\Windows\SysWOW64\netsh.exe
      "netsh" wlan show profiles
      2⤵
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Wi-Fi Discovery
      PID:3584
    • C:\Windows\SysWOW64\netstat.exe
      "netstat.exe" -ano
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Connections Discovery
      • Gathers network information
      • Suspicious use of AdjustPrivilegeToken
      PID:3504
  • C:\Users\Admin\AppData\Local\9ZXMECArFdIh\JlN8XoZxG5t2.exe
    "C:\Users\Admin\AppData\Local\9ZXMECArFdIh\JlN8XoZxG5t2.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3472

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Execution

        Command and Scripting Interpreter

        2
        T1059

        Windows Command Shell

        1
        T1059.003

        Scheduled Task/Job

        1
        T1053

        Scheduled Task

        1
        T1053.005

        Persistence

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Event Triggered Execution

        1
        T1546

        Netsh Helper DLL

        1
        T1546.007

        Scheduled Task/Job

        1
        T1053

        Scheduled Task

        1
        T1053.005

        Privilege Escalation

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Event Triggered Execution

        1
        T1546

        Netsh Helper DLL

        1
        T1546.007

        Scheduled Task/Job

        1
        T1053

        Scheduled Task

        1
        T1053.005

        Defense Evasion

        Modify Registry

        1
        T1112

        Credential Access

        Credentials from Password Stores

        1
        T1555

        Credentials from Web Browsers

        1
        T1555.003

        Unsecured Credentials

        2
        T1552

        Credentials In Files

        1
        T1552.001

        Credentials in Registry

        1
        T1552.002

        Discovery

        Browser Information Discovery

        1
        T1217

        System Information Discovery

        1
        T1082

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        System Network Configuration Discovery

        2
        T1016

        Internet Connection Discovery

        1
        T1016.001

        Wi-Fi Discovery

        1
        T1016.002

        System Network Connections Discovery

        1
        T1049

        Lateral Movement

        Collection

        Data from Local System

        2
        T1005

        Email Collection

        1
        T1114

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        JlN8XoZxG5t2.exe
        • Path C:\Users\Admin\AppData\Local\9ZXMECArFdIh\JlN8XoZxG5t2.exe
        • Size 256KB
        • SHA256 182c0121dde56822a0f5c534d9255a65d6939cca77ea4547cff89642774f32ae
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        e9635b820e8341588b7ec55a7d8a64f7.bat
        • Path C:\Users\Admin\AppData\Local\Temp\e9635b820e8341588b7ec55a7d8a64f7.bat
        • Size 131B
        • SHA256 340ec57c4688099b07bbc9345d7faf169e2134b3114babf358f1f5f96d95c4a3
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/4828-0-0x00000000001B0000-0x00000000001F2000-memory.dmp
        Download

        memory/4828-1-0x0000000004B10000-0x0000000004B76000-memory.dmp
        Download

        memory/4828-2-0x0000000005150000-0x0000000005160000-memory.dmp
        Download

        memory/4828-7-0x0000000005300000-0x0000000005312000-memory.dmp
        Download

        memory/4828-6-0x00000000052C0000-0x00000000052CA000-memory.dmp
        Download

        memory/4828-9-0x00000000056C0000-0x0000000005710000-memory.dmp
        Download

        memory/4828-14-0x0000000005A30000-0x0000000005AC2000-memory.dmp
        Download

        memory/4828-15-0x0000000006080000-0x0000000006626000-memory.dmp
        Download

        memory/4828-34-0x0000000005150000-0x0000000005160000-memory.dmp
        Download