Overview

overview

10

Static

static

3

tmpelii_59x.exe

windows10-ltsc_2021-x64

10

tmpelii_59x.exe

windows10-2004-x64

10

tmpelii_59x.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    22/05/2026, 15:03

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General

  • Target
    tmpelii_59x.exe
  • Size 1020KB
  • Sample260522-se4c2aez3m
  • SHA256 52ea5ce70986e3d6451f7bcf724216e2dbc95bf44f0264df2517b8cb39f946c7
  • 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 34 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 7 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 9 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 20 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\tmpelii_59x.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpelii_59x.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5096
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\users\admin\appdata\local\temp\tmpelii_59x.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:4772
      • C:\Users\Admin\AppData\Local\Temp\afirzfp.exe
        "C:\Users\Admin\AppData\Local\Temp\afirzfp.exe" "-C:\Users\Admin\AppData\Local\Temp\znzrixqbriyxatye.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 Location Discovery: System Language Discovery
        • System policy modification
        PID:4548
      • C:\Users\Admin\AppData\Local\Temp\afirzfp.exe
        "C:\Users\Admin\AppData\Local\Temp\afirzfp.exe" "-C:\Users\Admin\AppData\Local\Temp\znzrixqbriyxatye.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:1384
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\users\admin\appdata\local\temp\tmpelii_59x.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:1796
  • C:\Windows\nfvrmfcrlgadkhqankjb.exe
    nfvrmfcrlgadkhqankjb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5028
  • C:\Windows\argbvnjxqkdflhpykge.exe
    argbvnjxqkdflhpykge.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1036
  • C:\Windows\argbvnjxqkdflhpykge.exe
    argbvnjxqkdflhpykge.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4780
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\argbvnjxqkdflhpykge.exe*."
      2⤵
      • Executes dropped EXE
      PID:228
  • C:\Windows\pftngxsfxqijojqyje.exe
    pftngxsfxqijojqyje.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3096
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\pftngxsfxqijojqyje.exe*."
      2⤵
      • Executes dropped EXE
      PID:2156
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2892
  • C:\Users\Admin\AppData\Local\Temp\argbvnjxqkdflhpykge.exe
    C:\Users\Admin\AppData\Local\Temp\argbvnjxqkdflhpykge.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4680
  • C:\Users\Admin\AppData\Local\Temp\pftngxsfxqijojqyje.exe
    C:\Users\Admin\AppData\Local\Temp\pftngxsfxqijojqyje.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1800
  • C:\Users\Admin\AppData\Local\Temp\nfvrmfcrlgadkhqankjb.exe
    C:\Users\Admin\AppData\Local\Temp\nfvrmfcrlgadkhqankjb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5020
  • C:\Windows\nfvrmfcrlgadkhqankjb.exe
    nfvrmfcrlgadkhqankjb.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2144
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\nfvrmfcrlgadkhqankjb.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:2808
  • C:\Windows\gvibtjdpgypptntak.exe
    gvibtjdpgypptntak.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2156
  • C:\Users\Admin\AppData\Local\Temp\gvibtjdpgypptntak.exe
    C:\Users\Admin\AppData\Local\Temp\gvibtjdpgypptntak.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:404
  • C:\Windows\cvmjfzxniezdljtesqqja.exe
    cvmjfzxniezdljtesqqja.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3744
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\cvmjfzxniezdljtesqqja.exe*."
      2⤵
      • Executes dropped EXE
      PID:3692
  • C:\Windows\znzrixqbriyxatye.exe
    znzrixqbriyxatye.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4480
  • C:\Users\Admin\AppData\Local\Temp\cvmjfzxniezdljtesqqja.exe
    C:\Users\Admin\AppData\Local\Temp\cvmjfzxniezdljtesqqja.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4352
  • C:\Windows\gvibtjdpgypptntak.exe
    gvibtjdpgypptntak.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:692
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\gvibtjdpgypptntak.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:1900
  • C:\Users\Admin\AppData\Local\Temp\znzrixqbriyxatye.exe
    C:\Users\Admin\AppData\Local\Temp\znzrixqbriyxatye.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2472
  • C:\Windows\znzrixqbriyxatye.exe
    znzrixqbriyxatye.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3640
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\znzrixqbriyxatye.exe*."
      2⤵
      • Executes dropped EXE
      PID:1876
  • C:\Windows\pftngxsfxqijojqyje.exe
    pftngxsfxqijojqyje.exe
    1⤵
    • Executes dropped EXE
    PID:2216
  • C:\Windows\cvmjfzxniezdljtesqqja.exe
    cvmjfzxniezdljtesqqja.exe
    1⤵
    • Executes dropped EXE
    PID:1700

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

        ebwxxvxrqqpxjlzogimje.fdf
        • Path C:\Program Files (x86)\ebwxxvxrqqpxjlzogimje.fdf
        • Size 280B
        • SHA256 f4ef4b76d9226986359fee83a100266b4e891891fdff43a87ed660712e7975f4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        afirzfp.exe
        • Path C:\Users\Admin\AppData\Local\Temp\afirzfp.exe
        • Size 708KB
        • SHA256 deb00e1cf6178bde401b79cff7dcba5a25f9d6e1e46a238d431d5e83be70cdde
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pjhvvwaoztr.exe
        • Path C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
        • Size 320KB
        • SHA256 6be3c996bea180c4a26d54db93af6186ccc56e68c4bfeb90aa8b5a2b478b1346
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ebwxxvxrqqpxjlzogimje.fdf
        • Path C:\Users\Admin\AppData\Local\ebwxxvxrqqpxjlzogimje.fdf
        • Size 280B
        • SHA256 6642cec6132ad6b777044329a26a6de0d50bad46510304a884bf370b0d8182a9
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ebwxxvxrqqpxjlzogimje.fdf
        • Path C:\Users\Admin\AppData\Local\ebwxxvxrqqpxjlzogimje.fdf
        • Size 280B
        • SHA256 3631fcd20c39eb6da25e9c090d31e8a4fe4224876265e1f441aa311167ac0c01
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zhnzktglvgqjgtssvixflxirejteoher.qtg
        • Path C:\Users\Admin\AppData\Local\zhnzktglvgqjgtssvixflxirejteoher.qtg
        • Size 4KB
        • SHA256 9c52afb0f053e729390c565fb1bc7964fc845bfd7e6f76ee01d7dbcdbe15f38d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pftngxsfxqijojqyje.exe
        • Path C:\Windows\SysWOW64\pftngxsfxqijojqyje.exe
        • Size 1020KB
        • SHA256 52ea5ce70986e3d6451f7bcf724216e2dbc95bf44f0264df2517b8cb39f946c7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download