Overview

overview

10

Static

static

3

tmpzu_3jud5.exe

windows10-ltsc_2021-x64

10

tmpzu_3jud5.exe

windows10-2004-x64

10

tmpzu_3jud5.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, 14:14

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General

  • Target
    tmpzu_3jud5.exe
  • Size 1016KB
  • Sample260522-rkfcqafz21
  • SHA256 19fb2733fd679e81dbbd1e1624b2aa51496478810766901ee5a26242605fa64d
  • 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 33 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 8 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 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 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 42 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpzu_3jud5.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpzu_3jud5.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4700
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\users\admin\appdata\local\temp\tmpzu_3jud5.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:3924
      • C:\Users\Admin\AppData\Local\Temp\uhpwyds.exe
        "C:\Users\Admin\AppData\Local\Temp\uhpwyds.exe" "-C:\Users\Admin\AppData\Local\Temp\tpgwhvtcuhzohplv.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:3916
      • C:\Users\Admin\AppData\Local\Temp\uhpwyds.exe
        "C:\Users\Admin\AppData\Local\Temp\uhpwyds.exe" "-C:\Users\Admin\AppData\Local\Temp\tpgwhvtcuhzohplv.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:968
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\users\admin\appdata\local\temp\tmpzu_3jud5.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:828
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4772
  • C:\Windows\tpgwhvtcuhzohplv.exe
    tpgwhvtcuhzohplv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1412
  • C:\Users\Admin\AppData\Local\Temp\tpgwhvtcuhzohplv.exe
    C:\Users\Admin\AppData\Local\Temp\tpgwhvtcuhzohplv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2280
  • C:\Windows\hhcwldfsofburddrnsdd.exe
    hhcwldfsofburddrnsdd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3964
  • C:\Windows\axpgshgqjxqgajgrk.exe
    axpgshgqjxqgajgrk.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4688
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\axpgshgqjxqgajgrk.exe*."
      2⤵
      • Executes dropped EXE
      PID:4140
  • C:\Windows\wxtoexaoldausfgvsyklh.exe
    wxtoexaoldausfgvsyklh.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3356
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\wxtoexaoldausfgvsyklh.exe*."
      2⤵
      • Executes dropped EXE
      PID:896
  • C:\Users\Admin\AppData\Local\Temp\hhcwldfsofburddrnsdd.exe
    C:\Users\Admin\AppData\Local\Temp\hhcwldfsofburddrnsdd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3892
  • C:\Windows\jhasfvvgapjavfdpjm.exe
    jhasfvvgapjavfdpjm.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4856
  • C:\Windows\axpgshgqjxqgajgrk.exe
    axpgshgqjxqgajgrk.exe
    1⤵
    • Executes dropped EXE
    PID:4432
  • C:\Windows\jhasfvvgapjavfdpjm.exe
    jhasfvvgapjavfdpjm.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\jhasfvvgapjavfdpjm.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:4100
  • C:\Windows\wxtoexaoldausfgvsyklh.exe
    wxtoexaoldausfgvsyklh.exe
    1⤵
    • Executes dropped EXE
    PID:1412
  • C:\Users\Admin\AppData\Local\Temp\jhasfvvgapjavfdpjm.exe
    C:\Users\Admin\AppData\Local\Temp\jhasfvvgapjavfdpjm.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3604
  • C:\Windows\utngulmytjewsdcpkoy.exe
    utngulmytjewsdcpkoy.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\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\utngulmytjewsdcpkoy.exe*."
      2⤵
      • Executes dropped EXE
      PID:1716
  • C:\Windows\hhcwldfsofburddrnsdd.exe
    hhcwldfsofburddrnsdd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3228
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\hhcwldfsofburddrnsdd.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:972
  • C:\Users\Admin\AppData\Local\Temp\utngulmytjewsdcpkoy.exe
    C:\Users\Admin\AppData\Local\Temp\utngulmytjewsdcpkoy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4116
  • C:\Windows\tpgwhvtcuhzohplv.exe
    tpgwhvtcuhzohplv.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\tpgwhvtcuhzohplv.exe*."
      2⤵
      • Executes dropped EXE
      PID:1240
  • C:\Users\Admin\AppData\Local\Temp\axpgshgqjxqgajgrk.exe
    C:\Users\Admin\AppData\Local\Temp\axpgshgqjxqgajgrk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2884
  • C:\Users\Admin\AppData\Local\Temp\wxtoexaoldausfgvsyklh.exe
    C:\Users\Admin\AppData\Local\Temp\wxtoexaoldausfgvsyklh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5104
  • C:\Windows\utngulmytjewsdcpkoy.exe
    utngulmytjewsdcpkoy.exe
    1⤵
    • Executes dropped EXE
    PID:3464

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

        Loading Replay Monitor...

        Downloads

        yddcwtastpqoqhmfgqgll.ebi
        • Path C:\Program Files (x86)\yddcwtastpqoqhmfgqgll.ebi
        • Size 280B
        • SHA256 ee718f29e10bfeb459e3c040cbef8594d6efcc4fd35e5e7c7aec6d54e296067f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yddcwtastpqoqhmfgqgll.ebi
        • Path C:\Program Files (x86)\yddcwtastpqoqhmfgqgll.ebi
        • Size 280B
        • SHA256 a1174b7f4162b3b5520b214596c81f793347182235ba8c545af3e538e15dd3fe
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yddcwtastpqoqhmfgqgll.ebi
        • Path C:\Program Files (x86)\yddcwtastpqoqhmfgqgll.ebi
        • Size 280B
        • SHA256 022def1a36aa3958babe369e1a14693651f23491904d084abfe28627d32e31f2
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        qaorinawaky.exe
        • Path C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
        • Size 320KB
        • SHA256 e90f4f4e371e2984ca919f67fea3b0a809df9e88a17070fc4e5b9f59f265c593
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        uhpwyds.exe
        • Path C:\Users\Admin\AppData\Local\Temp\uhpwyds.exe
        • Size 696KB
        • SHA256 3c307cafb4fdfbc4b3028f7d247645d5117e01daac17e589b830b3b2e2cf14af
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tjuejrjmyfranpfjvqrhschphkwdpyln.hto
        • Path C:\Users\Admin\AppData\Local\tjuejrjmyfranpfjvqrhschphkwdpyln.hto
        • Size 4KB
        • SHA256 2a20b2269bada38fc97eaa83a8c3fef04936bce015668f4e3b397c282407f3bc
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        yddcwtastpqoqhmfgqgll.ebi
        • Path C:\Users\Admin\AppData\Local\yddcwtastpqoqhmfgqgll.ebi
        • Size 280B
        • SHA256 d84026ca2ef14f680f25a340891df29f0fdc0c54903fc599f08141e265272394
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yddcwtastpqoqhmfgqgll.ebi
        • Path C:\Users\Admin\AppData\Local\yddcwtastpqoqhmfgqgll.ebi
        • Size 280B
        • SHA256 d8c304b4b6446c0d9311ca654c745419f415da30321a397090c72631033db824
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jhasfvvgapjavfdpjm.exe
        • Path C:\Windows\SysWOW64\jhasfvvgapjavfdpjm.exe
        • Size 1016KB
        • SHA256 19fb2733fd679e81dbbd1e1624b2aa51496478810766901ee5a26242605fa64d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tjuejrjmyf.bat
        • Path C:\tjuejrjmyf.bat
        • Size 644KB
        • SHA256 958b869fef1f31acf7e552e704b64446f4938f0da60b26015309468197fe68ee
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download