Overview

overview

10

Static

static

3

tmp5enw3s0i.exe

windows10-ltsc_2021-x64

10

tmp5enw3s0i.exe

windows10-2004-x64

10

tmp5enw3s0i.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, 03:15

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General

  • Target
    tmp5enw3s0i.exe
  • Size 600KB
  • Sample260602-dr8qyscw7x
  • SHA256 08a78a34632f62702c8650bb6cdab080e5bf7bc7228cfed92a5b5de534050332
  • 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 7 IoCs
    persistence
  • UAC bypass 3 TTPs 16 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 39 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 14 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 autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 53 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 53 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 18 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 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp5enw3s0i.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp5enw3s0i.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3512
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\users\admin\appdata\local\temp\tmp5enw3s0i.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:3120
      • C:\Users\Admin\AppData\Local\Temp\ydiru.exe
        "C:\Users\Admin\AppData\Local\Temp\ydiru.exe" "-C:\Users\Admin\AppData\Local\Temp\vlbvjcsfyhejxydt.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 autorun.inf file
        • 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:3580
      • C:\Users\Admin\AppData\Local\Temp\ydiru.exe
        "C:\Users\Admin\AppData\Local\Temp\ydiru.exe" "-C:\Users\Admin\AppData\Local\Temp\vlbvjcsfyhejxydt.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:628
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\users\admin\appdata\local\temp\tmp5enw3s0i.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:1916
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1724
  • C:\Windows\ctkfuoftnxvbqsypg.exe
    ctkfuoftnxvbqsypg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1508
  • C:\Windows\ytongezrpdfpioytormhc.exe
    ytongezrpdfpioytormhc.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\ytongezrpdfpioytormhc.exe*."
      2⤵
      • Executes dropped EXE
      PID:4140
  • C:\Windows\jdxvnkevsfgphmvpjlfz.exe
    jdxvnkevsfgphmvpjlfz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2852
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\jdxvnkevsfgphmvpjlfz.exe*."
      2⤵
      • Executes dropped EXE
      PID:5480
  • C:\Users\Admin\AppData\Local\Temp\wpifwslbxjjrimungha.exe
    C:\Users\Admin\AppData\Local\Temp\wpifwslbxjjrimungha.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3320
  • C:\Users\Admin\AppData\Local\Temp\ytongezrpdfpioytormhc.exe
    C:\Users\Admin\AppData\Local\Temp\ytongezrpdfpioytormhc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:368
  • C:\Windows\vlbvjcsfyhejxydt.exe
    vlbvjcsfyhejxydt.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3344
  • C:\Windows\ldvrhcujepovlovnff.exe
    ldvrhcujepovlovnff.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3248
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\ldvrhcujepovlovnff.exe*."
      2⤵
      • Executes dropped EXE
      PID:612
  • C:\Windows\wpifwslbxjjrimungha.exe
    wpifwslbxjjrimungha.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:416
  • C:\Users\Admin\AppData\Local\Temp\jdxvnkevsfgphmvpjlfz.exe
    C:\Users\Admin\AppData\Local\Temp\jdxvnkevsfgphmvpjlfz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3116
  • C:\Windows\ytongezrpdfpioytormhc.exe
    ytongezrpdfpioytormhc.exe
    1⤵
    • Executes dropped EXE
    PID:1548
  • C:\Windows\ldvrhcujepovlovnff.exe
    ldvrhcujepovlovnff.exe
    1⤵
    • Executes dropped EXE
    PID:5216
  • C:\Users\Admin\AppData\Local\Temp\ldvrhcujepovlovnff.exe
    C:\Users\Admin\AppData\Local\Temp\ldvrhcujepovlovnff.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2892
  • C:\Windows\wpifwslbxjjrimungha.exe
    wpifwslbxjjrimungha.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4720
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\wpifwslbxjjrimungha.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:2192
  • C:\Users\Admin\AppData\Local\Temp\vlbvjcsfyhejxydt.exe
    C:\Users\Admin\AppData\Local\Temp\vlbvjcsfyhejxydt.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2372
  • C:\Users\Admin\AppData\Local\Temp\ctkfuoftnxvbqsypg.exe
    C:\Users\Admin\AppData\Local\Temp\ctkfuoftnxvbqsypg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1772
  • C:\Windows\vlbvjcsfyhejxydt.exe
    vlbvjcsfyhejxydt.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5876
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\vlbvjcsfyhejxydt.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:2792
  • C:\Windows\ctkfuoftnxvbqsypg.exe
    ctkfuoftnxvbqsypg.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4088
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\ctkfuoftnxvbqsypg.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:212
  • C:\Windows\jdxvnkevsfgphmvpjlfz.exe
    jdxvnkevsfgphmvpjlfz.exe
    1⤵
    • Executes dropped EXE
    PID:3980

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Replication Through Removable Media

        1
        T1091

        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

        Replication Through Removable Media

        1
        T1091

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        zzzdbeebexetrcrrrzzzzd.eeb
        • Path C:\Program Files (x86)\zzzdbeebexetrcrrrzzzzd.eeb
        • Size 272B
        • SHA256 6709dbc0155112307a508db0f433fc42340f6c8e750d2f73d1a32d514c69357f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zzzdbeebexetrcrrrzzzzd.eeb
        • Path C:\Program Files (x86)\zzzdbeebexetrcrrrzzzzd.eeb
        • Size 272B
        • SHA256 f20b103bfe090e469183a7a241ed9b634c435d580e0d626c4405cfcdc9ab9fcc
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zzzdbeebexetrcrrrzzzzd.eeb
        • Path C:\Program Files (x86)\zzzdbeebexetrcrrrzzzzd.eeb
        • Size 272B
        • SHA256 00b858046396a823a0da02a6d2eee64f5f966ddee84c094b6232fa2b07495f27
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        vveaalwpffo.exe
        • Path C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
        • Size 320KB
        • SHA256 0cc02d34d5fd4cf892fed282f98c1ad3e7dd6159a8877ae5c46d3f834ed36060
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ydiru.exe
        • Path C:\Users\Admin\AppData\Local\Temp\ydiru.exe
        • Size 712KB
        • SHA256 2107995d0797dcae90e97a203cc2666a075b01d060533782a5195e3f80f9b05f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        qbmbkyjrfjbbkggrcvgrcraozhvzrraww.slw
        • Path C:\Users\Admin\AppData\Local\qbmbkyjrfjbbkggrcvgrcraozhvzrraww.slw
        • Size 3KB
        • SHA256 efc53e3e3f3209ff490c716f8ccd63c81bdd94b8f5b204dcbd3785566ac66d53
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zzzdbeebexetrcrrrzzzzd.eeb
        • Path C:\Users\Admin\AppData\Local\zzzdbeebexetrcrrrzzzzd.eeb
        • Size 272B
        • SHA256 d5d1ef0e5a4bdb75b1002fd2c73f5a85598e7ea0c53dcc015d685579ca84af45
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ldvrhcujepovlovnff.exe
        • Path C:\Windows\SysWOW64\ldvrhcujepovlovnff.exe
        • Size 600KB
        • SHA256 08a78a34632f62702c8650bb6cdab080e5bf7bc7228cfed92a5b5de534050332
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        qbmbkyjrfjb.bat
        • Path C:\qbmbkyjrfjb.bat
        • Size 556KB
        • SHA256 e192439bd9339a1b45d4ffbc5e7dc4c275eb762659e1d637dcfeca0e154d3260
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download