Overview

overview

10

Static

static

3

tmpr6nylfz9.exe

windows10-ltsc_2021-x64

10

tmpr6nylfz9.exe

windows10-2004-x64

10

tmpr6nylfz9.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • 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, 03:41

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General

  • Target
    tmpr6nylfz9.exe
  • Size 1016KB
  • Sample260602-d8sq3ads2w
  • SHA256 5362c09319c951bf520453f62ce8e2b521322aaed60b929fe2cb4f11085d0250
  • 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 36 IoCs
    persistence
  • Disables RegEdit via registry modification 7 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 8 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 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\tmpr6nylfz9.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpr6nylfz9.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2756
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\users\admin\appdata\local\temp\tmpr6nylfz9.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:972
      • C:\Users\Admin\AppData\Local\Temp\gnyain.exe
        "C:\Users\Admin\AppData\Local\Temp\gnyain.exe" "-C:\Users\Admin\AppData\Local\Temp\sjeqixkbskmitmxh.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:4204
      • C:\Users\Admin\AppData\Local\Temp\gnyain.exe
        "C:\Users\Admin\AppData\Local\Temp\gnyain.exe" "-C:\Users\Admin\AppData\Local\Temp\sjeqixkbskmitmxh.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:3824
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\users\admin\appdata\local\temp\tmpr6nylfz9.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:2188
  • C:\Windows\gbaqmfwrmioodapdudcx.exe
    gbaqmfwrmioodapdudcx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1180
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\gbaqmfwrmioodapdudcx.exe*."
      2⤵
      • Executes dropped EXE
      PID:3364
  • C:\Windows\vrrifzrnjgnoecshzjjff.exe
    vrrifzrnjgnoecshzjjff.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4248
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3736
  • C:\Windows\gbaqmfwrmioodapdudcx.exe
    gbaqmfwrmioodapdudcx.exe
    1⤵
    • Executes dropped EXE
    PID:940
  • C:\Users\Admin\AppData\Local\Temp\tnlavndxrmrqeaobrzx.exe
    C:\Users\Admin\AppData\Local\Temp\tnlavndxrmrqeaobrzx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2000
  • C:\Users\Admin\AppData\Local\Temp\ibymgxmfyswuhcpbqx.exe
    C:\Users\Admin\AppData\Local\Temp\ibymgxmfyswuhcpbqx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4664
  • C:\Windows\tnlavndxrmrqeaobrzx.exe
    tnlavndxrmrqeaobrzx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2372
  • C:\Windows\ibymgxmfyswuhcpbqx.exe
    ibymgxmfyswuhcpbqx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4748
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\ibymgxmfyswuhcpbqx.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:4232
  • C:\Windows\tnlavndxrmrqeaobrzx.exe
    tnlavndxrmrqeaobrzx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3596
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\tnlavndxrmrqeaobrzx.exe*."
      2⤵
      • Executes dropped EXE
      PID:4984
  • C:\Windows\zrnatjxphadamgsdr.exe
    zrnatjxphadamgsdr.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3084
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\zrnatjxphadamgsdr.exe*."
      2⤵
      • Executes dropped EXE
      PID:1592
  • C:\Users\Admin\AppData\Local\Temp\vrrifzrnjgnoecshzjjff.exe
    C:\Users\Admin\AppData\Local\Temp\vrrifzrnjgnoecshzjjff.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2392
  • C:\Windows\ibymgxmfyswuhcpbqx.exe
    ibymgxmfyswuhcpbqx.exe
    1⤵
    • Executes dropped EXE
    PID:4236
  • C:\Users\Admin\AppData\Local\Temp\zrnatjxphadamgsdr.exe
    C:\Users\Admin\AppData\Local\Temp\zrnatjxphadamgsdr.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4664
  • C:\Windows\sjeqixkbskmitmxh.exe
    sjeqixkbskmitmxh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4056
  • C:\Windows\sjeqixkbskmitmxh.exe
    sjeqixkbskmitmxh.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1836
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\sjeqixkbskmitmxh.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:3428
  • C:\Users\Admin\AppData\Local\Temp\sjeqixkbskmitmxh.exe
    C:\Users\Admin\AppData\Local\Temp\sjeqixkbskmitmxh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1992
  • C:\Windows\zrnatjxphadamgsdr.exe
    zrnatjxphadamgsdr.exe
    1⤵
    • Executes dropped EXE
    PID:2620
  • C:\Windows\vrrifzrnjgnoecshzjjff.exe
    vrrifzrnjgnoecshzjjff.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4832
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\vrrifzrnjgnoecshzjjff.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:2368
  • C:\Users\Admin\AppData\Local\Temp\gbaqmfwrmioodapdudcx.exe
    C:\Users\Admin\AppData\Local\Temp\gbaqmfwrmioodapdudcx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3568

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

        xzfcffdfhkxeaeavtjprxux.vxz
        • Path C:\Program Files (x86)\xzfcffdfhkxeaeavtjprxux.vxz
        • Size 280B
        • SHA256 52f04e03121b5e43d4635268a5b8e959db1043dca48207952c2a0b3541385fbb
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        xzfcffdfhkxeaeavtjprxux.vxz
        • Path C:\Program Files (x86)\xzfcffdfhkxeaeavtjprxux.vxz
        • Size 280B
        • SHA256 492d5bf359768a0db1f0ae32536f8b28393df626c9be095aac061261d559696c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        duaouzhhnek.exe
        • Path C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
        • Size 320KB
        • SHA256 eb02393d0e89112092c2cf66ad5407d1b88549e9dd4d9c149e2a6c19208475f9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        gnyain.exe
        • Path C:\Users\Admin\AppData\Local\Temp\gnyain.exe
        • Size 724KB
        • SHA256 52758f423e9b2517553416ee92f164a3a18adce8c271c8082f129355073e2be8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        kxowkveresqipelrabsfwesdmzmayqxmtz.jan
        • Path C:\Users\Admin\AppData\Local\kxowkveresqipelrabsfwesdmzmayqxmtz.jan
        • Size 4KB
        • SHA256 45800136a911e1c16651c8558761df6ff24aa31a36c139b940ddfaeb914079d7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        xzfcffdfhkxeaeavtjprxux.vxz
        • Path C:\Users\Admin\AppData\Local\xzfcffdfhkxeaeavtjprxux.vxz
        • Size 280B
        • SHA256 231f093c5d6ddf2f035236aaf38a9fe8fbc1fcedf58cf175a083ccfd15178144
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ibymgxmfyswuhcpbqx.exe
        • Path C:\Windows\SysWOW64\ibymgxmfyswuhcpbqx.exe
        • Size 1016KB
        • SHA256 5362c09319c951bf520453f62ce8e2b521322aaed60b929fe2cb4f11085d0250
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download