Overview

overview

10

Static

static

3

tmp_i1nvpdg.exe

windows10-ltsc_2021-x64

10

tmp_i1nvpdg.exe

windows10-2004-x64

10

tmp_i1nvpdg.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/06/2026, 02:51

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General

  • Target
    tmp_i1nvpdg.exe
  • Size 1016KB
  • Sample260602-dccd7scs7s
  • SHA256 1a84ceb16917f3be69501dbd889c18dae838c3d03a07c3a571ad184c193f8ad8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoverypykspapersistenceprivilege_escalationtrojanworm

Malware Config

Signatures

  • Family: Pykspa

    Pykspa is a worm spreads via Skype uses DGA and it's written in C++.

    wormpykspa
  • Detect Pykspa worm 2 IoCs
    worm
  • Modifies WinLogon for persistence 2 TTPs 6 IoCs
    persistence
  • UAC bypass 3 TTPs 15 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 36 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    defense_evasion
  • Checks computer location settings 2 TTPs 8 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 28 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 6 IoCs
    defense_evasion
  • Adds Run key to start application 2 TTPs 64 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 12 IoCs
    defense_evasiontrojan
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 3 IoCs

    Possible Turn off User Account Control's privilege elevation for standard users.

    defense_evasionpersistenceprivilege_escalation
  • Looks up external IP address via web service 11 IoCs

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

  • Drops file in System32 directory 46 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 46 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 19 IoCs

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

    discovery
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • System policy modification 1 TTPs 42 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp_i1nvpdg.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp_i1nvpdg.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5260
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\users\admin\appdata\local\temp\tmp_i1nvpdg.exe*"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:5884
      • C:\Users\Admin\AppData\Local\Temp\uaixxcs.exe
        "C:\Users\Admin\AppData\Local\Temp\uaixxcs.exe" "-C:\Users\Admin\AppData\Local\Temp\tizxguthxothindt.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Impair Defenses: Safe Mode Boot
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • System policy modification
        PID:5228
      • C:\Users\Admin\AppData\Local\Temp\uaixxcs.exe
        "C:\Users\Admin\AppData\Local\Temp\uaixxcs.exe" "-C:\Users\Admin\AppData\Local\Temp\tizxguthxothindt.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System policy modification
        PID:224
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\users\admin\appdata\local\temp\tmp_i1nvpdg.exe"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:2980
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1652
  • C:\Windows\wqmpdwatokuntdytwpjfi.exe
    wqmpdwatokuntdytwpjfi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3236
  • C:\Windows\umghtkmdwqyptbunofx.exe
    umghtkmdwqyptbunofx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5180
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\umghtkmdwqyptbunofx.exe*."
      2⤵
      • Executes dropped EXE
      PID:1772
  • C:\Users\Admin\AppData\Local\Temp\havxkcfxrmvnsbvprjcx.exe
    C:\Users\Admin\AppData\Local\Temp\havxkcfxrmvnsbvprjcx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5196
  • C:\Users\Admin\AppData\Local\Temp\jatteuvldwdtwdvnnd.exe
    C:\Users\Admin\AppData\Local\Temp\jatteuvldwdtwdvnnd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5192
  • C:\Windows\aqihrggvmekzbhypo.exe
    aqihrggvmekzbhypo.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1344
  • C:\Windows\wqmpdwatokuntdytwpjfi.exe
    wqmpdwatokuntdytwpjfi.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4984
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\wqmpdwatokuntdytwpjfi.exe*."
      2⤵
      • Executes dropped EXE
      PID:456
  • C:\Windows\havxkcfxrmvnsbvprjcx.exe
    havxkcfxrmvnsbvprjcx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2388
  • C:\Users\Admin\AppData\Local\Temp\aqihrggvmekzbhypo.exe
    C:\Users\Admin\AppData\Local\Temp\aqihrggvmekzbhypo.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1868
  • C:\Windows\tizxguthxothindt.exe
    tizxguthxothindt.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4784
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\tizxguthxothindt.exe*."
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:5296
  • C:\Users\Admin\AppData\Local\Temp\tizxguthxothindt.exe
    C:\Users\Admin\AppData\Local\Temp\tizxguthxothindt.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:696
  • C:\Windows\umghtkmdwqyptbunofx.exe
    umghtkmdwqyptbunofx.exe
    1⤵
    • Executes dropped EXE
    PID:5496
  • C:\Windows\havxkcfxrmvnsbvprjcx.exe
    havxkcfxrmvnsbvprjcx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5624
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\havxkcfxrmvnsbvprjcx.exe*."
      2⤵
      • Executes dropped EXE
      PID:4372
  • C:\Windows\tizxguthxothindt.exe
    tizxguthxothindt.exe
    1⤵
    • Executes dropped EXE
    PID:5868
  • C:\Windows\jatteuvldwdtwdvnnd.exe
    jatteuvldwdtwdvnnd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5956
  • C:\Users\Admin\AppData\Local\Temp\umghtkmdwqyptbunofx.exe
    C:\Users\Admin\AppData\Local\Temp\umghtkmdwqyptbunofx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3052
  • C:\Windows\aqihrggvmekzbhypo.exe
    aqihrggvmekzbhypo.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4748
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\aqihrggvmekzbhypo.exe*."
      2⤵
      • Executes dropped EXE
      PID:2896
  • C:\Windows\jatteuvldwdtwdvnnd.exe
    jatteuvldwdtwdvnnd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1544
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\jatteuvldwdtwdvnnd.exe*."
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:4772
  • C:\Users\Admin\AppData\Local\Temp\wqmpdwatokuntdytwpjfi.exe
    C:\Users\Admin\AppData\Local\Temp\wqmpdwatokuntdytwpjfi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3508

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Execution

        Persistence

        Boot or Logon Autostart Execution

        3
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Hijack Execution Flow

        1
        T1574

        Executable Installer File Permissions Weakness

        1
        T1574.005

        Privilege Escalation

        Abuse Elevation Control Mechanism

        1
        T1548

        Bypass User Account Control

        1
        T1548.002

        Boot or Logon Autostart Execution

        3
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Hijack Execution Flow

        1
        T1574

        Executable Installer File Permissions Weakness

        1
        T1574.005

        Defense Evasion

        Abuse Elevation Control Mechanism

        1
        T1548

        Bypass User Account Control

        1
        T1548.002

        Hijack Execution Flow

        1
        T1574

        Executable Installer File Permissions Weakness

        1
        T1574.005

        Impair Defenses

        2
        T1562

        Disable or Modify Tools

        1
        T1562.001

        Safe Mode Boot

        1
        T1562.009

        Modify Registry

        5
        T1112

        Credential Access

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        3
        T1082

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        Lateral Movement

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        xwxfywfddetrcrrrzxwxfy.fdd
        • Path C:\Program Files (x86)\xwxfywfddetrcrrrzxwxfy.fdd
        • Size 280B
        • SHA256 fe2d55f9f37d2db81bc7176633d8683757580be5c58d4ad44668f80149c27147
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        xwxfywfddetrcrrrzxwxfy.fdd
        • Path C:\Program Files (x86)\xwxfywfddetrcrrrzxwxfy.fdd
        • Size 280B
        • SHA256 5415137efcade508afded90a91a3c1ea04e0f699b5b0c46d4ee15a144bc692b7
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        uaixxcs.exe
        • Path C:\Users\Admin\AppData\Local\Temp\uaixxcs.exe
        • Size 724KB
        • SHA256 d77a14efa8eee4aa9985dd040e49905e5c553c8e50b8338ceea83658db7c6b8b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        vveaalwpffo.exe
        • Path C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
        • Size 320KB
        • SHA256 e376e93b12ab267efd5083c6551a112b0c485ab09f184d10f49d9d70051727be
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        oykdhqkteqqzvvgrktdpimvpyjvveaalw.yiu
        • Path C:\Users\Admin\AppData\Local\oykdhqkteqqzvvgrktdpimvpyjvveaalw.yiu
        • Size 4KB
        • SHA256 f74dfe1bccdb83e56883abf0df4fe9b8b3b34847ae1bc3edbd62491a0f199735
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        xwxfywfddetrcrrrzxwxfy.fdd
        • Path C:\Users\Admin\AppData\Local\xwxfywfddetrcrrrzxwxfy.fdd
        • Size 280B
        • SHA256 1d67ca7ca4c7280b8d5044290d3718d6aafcfafc80b22cc0460bf0887f3ff274
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        xwxfywfddetrcrrrzxwxfy.fdd
        • Path C:\Users\Admin\AppData\Local\xwxfywfddetrcrrrzxwxfy.fdd
        • Size 280B
        • SHA256 bcb9cd1c6ea9a33732ec39b9ea9fa83b5cd91f4627b193b3a9666a5d69955519
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jatteuvldwdtwdvnnd.exe
        • Path C:\Windows\SysWOW64\jatteuvldwdtwdvnnd.exe
        • Size 1016KB
        • SHA256 1a84ceb16917f3be69501dbd889c18dae838c3d03a07c3a571ad184c193f8ad8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download