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
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/05/2026, 15:03

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

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 35 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 7 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\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:3800
    • C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe
      "C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.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:5112
      • C:\Users\Admin\AppData\Local\Temp\ybjox.exe
        "C:\Users\Admin\AppData\Local\Temp\ybjox.exe" "-C:\Users\Admin\AppData\Local\Temp\vjcsmbkcvjvkaoye.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:3984
      • C:\Users\Admin\AppData\Local\Temp\ybjox.exe
        "C:\Users\Admin\AppData\Local\Temp\ybjox.exe" "-C:\Users\Admin\AppData\Local\Temp\vjcsmbkcvjvkaoye.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:4960
    • C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe
      "C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.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:3820
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1564
  • C:\Windows\crlcxnxqkzmctitae.exe
    crlcxnxqkzmctitae.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4204
  • C:\Windows\crlcxnxqkzmctitae.exe
    crlcxnxqkzmctitae.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4416
    • C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe
      "C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe" "c:\windows\crlcxnxqkzmctitae.exe*."
      2⤵
      • Executes dropped EXE
      PID:2448
  • C:\Users\Admin\AppData\Local\Temp\vjcsmbkcvjvkaoye.exe
    C:\Users\Admin\AppData\Local\Temp\vjcsmbkcvjvkaoye.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3236
  • C:\Users\Admin\AppData\Local\Temp\jbysqjwsphxqkcqahnfx.exe
    C:\Users\Admin\AppData\Local\Temp\jbysqjwsphxqkcqahnfx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5036
  • C:\Windows\wnjczrdyulaslcpyeja.exe
    wnjczrdyulaslcpyeja.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1064
    • C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe
      "C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe" "c:\windows\wnjczrdyulaslcpyeja.exe*."
      2⤵
      • Executes dropped EXE
      PID:1492
  • C:\Windows\yrpkjdromfwqletemtmfd.exe
    yrpkjdromfwqletemtmfd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4324
  • C:\Windows\lbwokbmgbrfwoeqydh.exe
    lbwokbmgbrfwoeqydh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4020
  • C:\Windows\vjcsmbkcvjvkaoye.exe
    vjcsmbkcvjvkaoye.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2576
    • C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe
      "C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe" "c:\windows\vjcsmbkcvjvkaoye.exe*."
      2⤵
      • Executes dropped EXE
      PID:552
  • C:\Windows\lbwokbmgbrfwoeqydh.exe
    lbwokbmgbrfwoeqydh.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4772
    • C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe
      "C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe" "c:\windows\lbwokbmgbrfwoeqydh.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:1564
  • C:\Users\Admin\AppData\Local\Temp\yrpkjdromfwqletemtmfd.exe
    C:\Users\Admin\AppData\Local\Temp\yrpkjdromfwqletemtmfd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3752
  • C:\Users\Admin\AppData\Local\Temp\crlcxnxqkzmctitae.exe
    C:\Users\Admin\AppData\Local\Temp\crlcxnxqkzmctitae.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3772
  • C:\Users\Admin\AppData\Local\Temp\wnjczrdyulaslcpyeja.exe
    C:\Users\Admin\AppData\Local\Temp\wnjczrdyulaslcpyeja.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2568
  • C:\Windows\yrpkjdromfwqletemtmfd.exe
    yrpkjdromfwqletemtmfd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3100
    • C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe
      "C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe" "c:\windows\yrpkjdromfwqletemtmfd.exe*."
      2⤵
      • Executes dropped EXE
      PID:1876
  • C:\Windows\jbysqjwsphxqkcqahnfx.exe
    jbysqjwsphxqkcqahnfx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2472
  • C:\Windows\wnjczrdyulaslcpyeja.exe
    wnjczrdyulaslcpyeja.exe
    1⤵
    • Executes dropped EXE
    PID:4764
  • C:\Windows\jbysqjwsphxqkcqahnfx.exe
    jbysqjwsphxqkcqahnfx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4500
    • C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe
      "C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe" "c:\windows\jbysqjwsphxqkcqahnfx.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:840
  • C:\Windows\vjcsmbkcvjvkaoye.exe
    vjcsmbkcvjvkaoye.exe
    1⤵
    • Executes dropped EXE
    PID:4744
  • C:\Users\Admin\AppData\Local\Temp\lbwokbmgbrfwoeqydh.exe
    C:\Users\Admin\AppData\Local\Temp\lbwokbmgbrfwoeqydh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3772

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

        mwhqvwurwgr.exe
        • Path C:\Users\Admin\AppData\Local\Temp\mwhqvwurwgr.exe
        • Size 320KB
        • SHA256 977e73269e599ef68e335bb8c577eef94c35f6f37bee02b0a43f485c13fc4dc6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ybjox.exe
        • Path C:\Users\Admin\AppData\Local\Temp\ybjox.exe
        • Size 704KB
        • SHA256 97e367f2b8160b66378a5b773981bcceffd208fb40dd39de5ad2cd756d61e1ec
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        vjcsmbkcvjvkaoyehjxleuodmexlxmcqagjlzn.wqf
        • Path C:\Users\Admin\AppData\Local\vjcsmbkcvjvkaoyehjxleuodmexlxmcqagjlzn.wqf
        • Size 4KB
        • SHA256 20d5823bf8e630c4f0c4f2c9027a2001d082e1a0d6c54419bd90113703c007d3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ybjoxbzgorswbedyqhknvajnlsa.ein
        • Path C:\Users\Admin\AppData\Local\ybjoxbzgorswbedyqhknvajnlsa.ein
        • Size 280B
        • SHA256 e5fc76cb47b730a509ea6378a7c908121820b2839dafd0e85d0dfc66ec92bf44
        • MD5 SHA1 SHA512 TLSH
        Submit Download

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