Overview

overview

10

Static

static

3

tmpknwxhjx6.exe

windows10-ltsc_2021-x64

10

tmpknwxhjx6.exe

windows10-2004-x64

10

tmpknwxhjx6.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/06/2026, 03:55

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General

  • Target
    tmpknwxhjx6.exe
  • Size 496KB
  • Sample260602-eg2ekadv2t
  • SHA256 c26f5632fb49cb95cf5f29e95b8973e1a246ba425258a6b4cce07fe00a142bb9
  • 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
  • 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 4 IoCs

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

  • 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 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 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpknwxhjx6.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpknwxhjx6.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2396
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\users\admin\appdata\local\temp\tmpknwxhjx6.exe*"
      2⤵
      • 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
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2448
      • C:\Users\Admin\AppData\Local\Temp\jtbzek.exe
        "C:\Users\Admin\AppData\Local\Temp\jtbzek.exe" "-C:\Users\Admin\AppData\Local\Temp\vphpeumjuhbzqfti.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:1716
      • C:\Users\Admin\AppData\Local\Temp\jtbzek.exe
        "C:\Users\Admin\AppData\Local\Temp\jtbzek.exe" "-C:\Users\Admin\AppData\Local\Temp\vphpeumjuhbzqfti.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:728
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\users\admin\appdata\local\temp\tmpknwxhjx6.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:1308
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2024
  • C:\Windows\vphpeumjuhbzqfti.exe
    vphpeumjuhbzqfti.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3612
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\vphpeumjuhbzqfti.exe*."
      2⤵
      • Executes dropped EXE
      PID:2976
  • C:\Windows\lhblcuonapllevlcpb.exe
    lhblcuonapllevlcpb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3720
  • C:\Windows\lhblcuonapllevlcpb.exe
    lhblcuonapllevlcpb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:220
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\lhblcuonapllevlcpb.exe*."
      2⤵
      • Executes dropped EXE
      PID:2744
  • C:\Users\Admin\AppData\Local\Temp\cxqzpgzxjxsrjzoeq.exe
    C:\Users\Admin\AppData\Local\Temp\cxqzpgzxjxsrjzoeq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:644
  • C:\Users\Admin\AppData\Local\Temp\wtozrkfftjghbtkcqda.exe
    C:\Users\Admin\AppData\Local\Temp\wtozrkfftjghbtkcqda.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2940
  • C:\Windows\jhdpicyzofdfatlethfd.exe
    jhdpicyzofdfatlethfd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2424
  • C:\Windows\wtozrkfftjghbtkcqda.exe
    wtozrkfftjghbtkcqda.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4392
  • C:\Users\Admin\AppData\Local\Temp\yxuhbwtvldcfbvoiynmli.exe
    C:\Users\Admin\AppData\Local\Temp\yxuhbwtvldcfbvoiynmli.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4620
  • C:\Windows\yxuhbwtvldcfbvoiynmli.exe
    yxuhbwtvldcfbvoiynmli.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2964
  • C:\Windows\wtozrkfftjghbtkcqda.exe
    wtozrkfftjghbtkcqda.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1152
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\wtozrkfftjghbtkcqda.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:4120
  • C:\Users\Admin\AppData\Local\Temp\vphpeumjuhbzqfti.exe
    C:\Users\Admin\AppData\Local\Temp\vphpeumjuhbzqfti.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1412
  • C:\Windows\cxqzpgzxjxsrjzoeq.exe
    cxqzpgzxjxsrjzoeq.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4132
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\cxqzpgzxjxsrjzoeq.exe*."
      2⤵
      • Executes dropped EXE
      PID:4084
  • C:\Windows\yxuhbwtvldcfbvoiynmli.exe
    yxuhbwtvldcfbvoiynmli.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3444
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\yxuhbwtvldcfbvoiynmli.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:1284
  • C:\Windows\vphpeumjuhbzqfti.exe
    vphpeumjuhbzqfti.exe
    1⤵
    • Executes dropped EXE
    PID:840
  • C:\Users\Admin\AppData\Local\Temp\lhblcuonapllevlcpb.exe
    C:\Users\Admin\AppData\Local\Temp\lhblcuonapllevlcpb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:764
  • C:\Windows\cxqzpgzxjxsrjzoeq.exe
    cxqzpgzxjxsrjzoeq.exe
    1⤵
    • Executes dropped EXE
    PID:3988
  • C:\Windows\jhdpicyzofdfatlethfd.exe
    jhdpicyzofdfatlethfd.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:384
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\jhdpicyzofdfatlethfd.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:2056
  • C:\Users\Admin\AppData\Local\Temp\jhdpicyzofdfatlethfd.exe
    C:\Users\Admin\AppData\Local\Temp\jhdpicyzofdfatlethfd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4572

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

        System Information Discovery

        2
        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

        jtbzek.exe
        • Path C:\Users\Admin\AppData\Local\Temp\jtbzek.exe
        • Size 716KB
        • SHA256 e1cafa9d4b28aa8f7162c2f22040a86480033af5455697e1749141a70a76b732
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

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

        vphpeumjuhbzqftitdxrjrgwolwjdbshvkvfzt.tiy
        • Path C:\Users\Admin\AppData\Local\vphpeumjuhbzqftitdxrjrgwolwjdbshvkvfzt.tiy
        • Size 3KB
        • SHA256 c152800cbc52917d611b779a75920a2b5cfbe5f94695d069eae57dcd867a3bd5
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yholpubnnpylrvyccbktaxbgnzz.kxd
        • Path C:\Users\Admin\AppData\Local\yholpubnnpylrvyccbktaxbgnzz.kxd
        • Size 272B
        • SHA256 b2b9e541c8d83ace17cccabec48aaa7e8abfa4aa417a53ac109278a4229b835f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lhblcuonapllevlcpb.exe
        • Path C:\Windows\SysWOW64\lhblcuonapllevlcpb.exe
        • Size 496KB
        • SHA256 c26f5632fb49cb95cf5f29e95b8973e1a246ba425258a6b4cce07fe00a142bb9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download