Overview

overview

10

Static

static

3

tmp9kr0qqe8.exe

windows10-ltsc_2021-x64

10

tmp9kr0qqe8.exe

windows10-2004-x64

10

tmp9kr0qqe8.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, 03:39

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General

  • Target
    tmp9kr0qqe8.exe
  • Size 492KB
  • Sample260602-d7ywpac18t
  • SHA256 13e8f8cf343f9c910a2a465fbfb2504a07fb9224bfad739ab6d70ce8c70681b6
  • 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 38 IoCs
    persistence
  • Disables RegEdit via registry modification 9 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 10 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 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\tmp9kr0qqe8.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp9kr0qqe8.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4520
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\users\admin\appdata\local\temp\tmp9kr0qqe8.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:2900
      • C:\Users\Admin\AppData\Local\Temp\wcitw.exe
        "C:\Users\Admin\AppData\Local\Temp\wcitw.exe" "-c:\users\admin\appdata\local\temp\tmp9kr0qqe8.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:4872
      • C:\Users\Admin\AppData\Local\Temp\wcitw.exe
        "C:\Users\Admin\AppData\Local\Temp\wcitw.exe" "-c:\users\admin\appdata\local\temp\tmp9kr0qqe8.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:2280
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\users\admin\appdata\local\temp\tmp9kr0qqe8.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:3040
  • C:\Windows\hcxxplxqseahqgyawjez.exe
    hcxxplxqseahqgyawjez.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1396
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2672
  • C:\Windows\askhwpyonwptzmbat.exe
    askhwpyonwptzmbat.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4640
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\askhwpyonwptzmbat.exe*."
      2⤵
      • Executes dropped EXE
      PID:4464
  • C:\Users\Admin\AppData\Local\Temp\wsopifsmpczhribebplhi.exe
    C:\Users\Admin\AppData\Local\Temp\wsopifsmpczhribebplhi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2388
  • C:\Windows\tkbxldlaygybgsge.exe
    tkbxldlaygybgsge.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1552
  • C:\Users\Admin\AppData\Local\Temp\askhwpyonwptzmbat.exe
    C:\Users\Admin\AppData\Local\Temp\askhwpyonwptzmbat.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3820
  • C:\Windows\hcxxplxqseahqgyawjez.exe
    hcxxplxqseahqgyawjez.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4904
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\hcxxplxqseahqgyawjez.exe*."
      2⤵
      • Executes dropped EXE
      PID:4176
  • C:\Windows\uoihytewxidjrgxytfz.exe
    uoihytewxidjrgxytfz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:436
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\uoihytewxidjrgxytfz.exe*."
      2⤵
      • Executes dropped EXE
      PID:768
  • C:\Windows\askhwpyonwptzmbat.exe
    askhwpyonwptzmbat.exe
    1⤵
    • Executes dropped EXE
    PID:3972
  • C:\Windows\jcvtjdneeoinuiyysd.exe
    jcvtjdneeoinuiyysd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:924
  • C:\Windows\wsopifsmpczhribebplhi.exe
    wsopifsmpczhribebplhi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4964
  • C:\Users\Admin\AppData\Local\Temp\jcvtjdneeoinuiyysd.exe
    C:\Users\Admin\AppData\Local\Temp\jcvtjdneeoinuiyysd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:560
  • C:\Users\Admin\AppData\Local\Temp\tkbxldlaygybgsge.exe
    C:\Users\Admin\AppData\Local\Temp\tkbxldlaygybgsge.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3284
  • C:\Windows\uoihytewxidjrgxytfz.exe
    uoihytewxidjrgxytfz.exe
    1⤵
    • Executes dropped EXE
    PID:2368
  • C:\Windows\wsopifsmpczhribebplhi.exe
    wsopifsmpczhribebplhi.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5068
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\wsopifsmpczhribebplhi.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:2988
  • C:\Windows\tkbxldlaygybgsge.exe
    tkbxldlaygybgsge.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1568
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\tkbxldlaygybgsge.exe*."
      2⤵
      • Executes dropped EXE
      PID:2720
  • C:\Users\Admin\AppData\Local\Temp\uoihytewxidjrgxytfz.exe
    C:\Users\Admin\AppData\Local\Temp\uoihytewxidjrgxytfz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5032
  • C:\Users\Admin\AppData\Local\Temp\hcxxplxqseahqgyawjez.exe
    C:\Users\Admin\AppData\Local\Temp\hcxxplxqseahqgyawjez.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4224
  • C:\Windows\jcvtjdneeoinuiyysd.exe
    jcvtjdneeoinuiyysd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4388
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\jcvtjdneeoinuiyysd.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:4464

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

        behpptnoyswlcaakojmpxxbv.gae
        • Path C:\Program Files (x86)\behpptnoyswlcaakojmpxxbv.gae
        • Size 280B
        • SHA256 daec7093dc4ba8a48f584c3fde9d19ffbcd722c3511b8795bbbcb5a7ca949b37
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        behpptnoyswlcaakojmpxxbv.gae
        • Path C:\Program Files (x86)\behpptnoyswlcaakojmpxxbv.gae
        • Size 280B
        • SHA256 b201890abc0679b1576bda6c6236bed9aa1be9b692eed54f6f7e41624b148543
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        behpptnoyswlcaakojmpxxbv.gae
        • Path C:\Program Files (x86)\behpptnoyswlcaakojmpxxbv.gae
        • Size 280B
        • SHA256 03e0000a7d4fb3de419e5ea40c2aff84d86d6b0824f838abb24365d1af1aba2a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        nayyfohuxki.exe
        • Path C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
        • Size 320KB
        • SHA256 9035b03c189a245b77d1f1ad3385916f0b5ed50ae2d5687b1f4a1ea19843218d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        wcitw.exe
        • Path C:\Users\Admin\AppData\Local\Temp\wcitw.exe
        • Size 696KB
        • SHA256 bc54e50792bf76be5a367bfa1802c8f27e09c9558a42499c13f969dac2ba5c4a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        behpptnoyswlcaakojmpxxbv.gae
        • Path C:\Users\Admin\AppData\Local\behpptnoyswlcaakojmpxxbv.gae
        • Size 280B
        • SHA256 d7e36f40f7cc57d01c396e37a09c22ae32082351f89cf46b65f6c860d5e2f877
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        kymfqfkwrwllnwhcrxlzsdsxjejyyajupek.mfq
        • Path C:\Users\Admin\AppData\Local\kymfqfkwrwllnwhcrxlzsdsxjejyyajupek.mfq
        • Size 4KB
        • SHA256 ecd472cbae862807b7b438e167e71f4a6a3563e11a5dee9074f2f463a7e54149
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        jcvtjdneeoinuiyysd.exe
        • Path C:\Windows\SysWOW64\jcvtjdneeoinuiyysd.exe
        • Size 492KB
        • SHA256 13e8f8cf343f9c910a2a465fbfb2504a07fb9224bfad739ab6d70ce8c70681b6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tepfnzbkce.bat
        • Path C:\tepfnzbkce.bat
        • Size 520KB
        • SHA256 5c6d788a4eff185017d5536d893458fa3a1f47950bdb3ab6326b5c696800a6e5
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download