Overview

overview

10

Static

static

3

tmp0ncqx4h0.exe

windows10-ltsc_2021-x64

10

tmp0ncqx4h0.exe

windows10-2004-x64

10

tmp0ncqx4h0.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • 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
    tmp0ncqx4h0.exe
  • Size 600KB
  • Sample260602-eg92psex4n
  • SHA256 126804dd7e7c5b137beee74e61e9be1bda1f98237d47653e27a5d84838d221dd
  • 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 35 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 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 4 IoCs

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

  • 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\tmp0ncqx4h0.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp0ncqx4h0.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5192
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\users\admin\appdata\local\temp\tmp0ncqx4h0.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:2636
      • C:\Users\Admin\AppData\Local\Temp\chhvvcr.exe
        "C:\Users\Admin\AppData\Local\Temp\chhvvcr.exe" "-C:\Users\Admin\AppData\Local\Temp\bpyveushqjznlykb.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:4192
      • C:\Users\Admin\AppData\Local\Temp\chhvvcr.exe
        "C:\Users\Admin\AppData\Local\Temp\chhvvcr.exe" "-C:\Users\Admin\AppData\Local\Temp\bpyveushqjznlykb.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:4540
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\users\admin\appdata\local\temp\tmp0ncqx4h0.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:1280
  • C:\Windows\ctffrkldplevwmbvibg.exe
    ctffrkldplevwmbvibg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2896
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1204
  • C:\Windows\ctffrkldplevwmbvibg.exe
    ctffrkldplevwmbvibg.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4764
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\ctffrkldplevwmbvibg.exe*."
      2⤵
      • Executes dropped EXE
      PID:3232
  • C:\Users\Admin\AppData\Local\Temp\ctffrkldplevwmbvibg.exe
    C:\Users\Admin\AppData\Local\Temp\ctffrkldplevwmbvibg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4180
  • C:\Windows\ixhfpgfvfzqfesfxi.exe
    ixhfpgfvfzqfesfxi.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2112
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\ixhfpgfvfzqfesfxi.exe*."
      2⤵
      • Executes dropped EXE
      PID:4616
  • C:\Windows\exlnbwzthfatwofbqlslz.exe
    exlnbwzthfatwofbqlslz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1860
  • C:\Users\Admin\AppData\Local\Temp\exlnbwzthfatwofbqlslz.exe
    C:\Users\Admin\AppData\Local\Temp\exlnbwzthfatwofbqlslz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2532
  • C:\Windows\bpyveushqjznlykb.exe
    bpyveushqjznlykb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2032
  • C:\Windows\bpyveushqjznlykb.exe
    bpyveushqjznlykb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4840
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\bpyveushqjznlykb.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:4496
  • C:\Users\Admin\AppData\Local\Temp\phuvicexkhbtvmcxlfld.exe
    C:\Users\Admin\AppData\Local\Temp\phuvicexkhbtvmcxlfld.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3400
  • C:\Windows\ixhfpgfvfzqfesfxi.exe
    ixhfpgfvfzqfesfxi.exe
    1⤵
    • Executes dropped EXE
    PID:3880
  • C:\Users\Admin\AppData\Local\Temp\ixhfpgfvfzqfesfxi.exe
    C:\Users\Admin\AppData\Local\Temp\ixhfpgfvfzqfesfxi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3924
  • C:\Users\Admin\AppData\Local\Temp\bpyveushqjznlykb.exe
    C:\Users\Admin\AppData\Local\Temp\bpyveushqjznlykb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5884
  • C:\Windows\phuvicexkhbtvmcxlfld.exe
    phuvicexkhbtvmcxlfld.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5760
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\phuvicexkhbtvmcxlfld.exe*."
      2⤵
      • Executes dropped EXE
      PID:5492
  • C:\Windows\exlnbwzthfatwofbqlslz.exe
    exlnbwzthfatwofbqlslz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5688
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\exlnbwzthfatwofbqlslz.exe*."
      2⤵
      • Executes dropped EXE
      PID:5764
  • C:\Windows\rhsrcuulwrjzzocvhz.exe
    rhsrcuulwrjzzocvhz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2980
  • C:\Windows\phuvicexkhbtvmcxlfld.exe
    phuvicexkhbtvmcxlfld.exe
    1⤵
    • Executes dropped EXE
    PID:4892
  • C:\Windows\rhsrcuulwrjzzocvhz.exe
    rhsrcuulwrjzzocvhz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1764
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\rhsrcuulwrjzzocvhz.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:5632
  • C:\Users\Admin\AppData\Local\Temp\rhsrcuulwrjzzocvhz.exe
    C:\Users\Admin\AppData\Local\Temp\rhsrcuulwrjzzocvhz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:692

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

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        Downloads

        chhvvcr.exe
        • Path C:\Users\Admin\AppData\Local\Temp\chhvvcr.exe
        • Size 704KB
        • SHA256 231cabc9ab2b411d905f49c880473aa0b4429ab0a15cc541ef1c74cabba22808
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

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

        gfzhbcllfjkjsqnpklyxrzt.ddx
        • Path C:\Users\Admin\AppData\Local\gfzhbcllfjkjsqnpklyxrzt.ddx
        • Size 272B
        • SHA256 0b0d0be2986bb152027503b59af0d41b07e32c073f18e99defa1b4d8463acf12
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        tdibgsmxcrdnhqylrdblqjoaufkzlvpygt.ljt
        • Path C:\Users\Admin\AppData\Local\tdibgsmxcrdnhqylrdblqjoaufkzlvpygt.ljt
        • Size 3KB
        • SHA256 e4900274c67c708174dc3e70323ce4070df372b3d62dcf3a40ee8cf1e382e0d1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        rhsrcuulwrjzzocvhz.exe
        • Path C:\Windows\SysWOW64\rhsrcuulwrjzzocvhz.exe
        • Size 600KB
        • SHA256 126804dd7e7c5b137beee74e61e9be1bda1f98237d47653e27a5d84838d221dd
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download