Overview

overview

10

Static

static

3

tmpnif77iqx.exe

windows10-ltsc_2021-x64

10

tmpnif77iqx.exe

windows10-2004-x64

10

tmpnif77iqx.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • 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, 03:58

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General

  • Target
    tmpnif77iqx.exe
  • Size 600KB
  • Sample260602-ejg4psex6p
  • SHA256 5b3dc82ddc8865d7d06be428110829154be48e3345b91a663e4e2435a14d8497
  • 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 38 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 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\tmpnif77iqx.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpnif77iqx.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5008
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\users\admin\appdata\local\temp\tmpnif77iqx.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:4936
      • C:\Users\Admin\AppData\Local\Temp\tikrego.exe
        "C:\Users\Admin\AppData\Local\Temp\tikrego.exe" "-C:\Users\Admin\AppData\Local\Temp\sqbrnypgxjrkyrgs.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:860
      • C:\Users\Admin\AppData\Local\Temp\tikrego.exe
        "C:\Users\Admin\AppData\Local\Temp\tikrego.exe" "-C:\Users\Admin\AppData\Local\Temp\sqbrnypgxjrkyrgs.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:5928
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\users\admin\appdata\local\temp\tmpnif77iqx.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:4256
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1540
  • C:\Windows\tuibaoicwlwsjfxmbef.exe
    tuibaoicwlwsjfxmbef.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4308
  • C:\Windows\sqbrnypgxjrkyrgs.exe
    sqbrnypgxjrkyrgs.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:564
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\sqbrnypgxjrkyrgs.exe*."
      2⤵
      • Executes dropped EXE
      PID:5244
  • C:\Windows\tuibaoicwlwsjfxmbef.exe
    tuibaoicwlwsjfxmbef.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\tuibaoicwlwsjfxmbef.exe*."
      2⤵
      • Executes dropped EXE
      PID:2572
  • C:\Users\Admin\AppData\Local\Temp\sqbrnypgxjrkyrgs.exe
    C:\Users\Admin\AppData\Local\Temp\sqbrnypgxjrkyrgs.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3768
  • C:\Windows\vyojkawsofsqjhbsjorhc.exe
    vyojkawsofsqjhbsjorhc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2320
  • C:\Users\Admin\AppData\Local\Temp\vyojkawsofsqjhbsjorhc.exe
    C:\Users\Admin\AppData\Local\Temp\vyojkawsofsqjhbsjorhc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2364
  • C:\Windows\sqbrnypgxjrkyrgs.exe
    sqbrnypgxjrkyrgs.exe
    1⤵
    • Executes dropped EXE
    PID:3748
  • C:\Users\Admin\AppData\Local\Temp\iivnlyrkdrbwmhymac.exe
    C:\Users\Admin\AppData\Local\Temp\iivnlyrkdrbwmhymac.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4064
  • C:\Windows\gixrrgbwrhtqifyoeikz.exe
    gixrrgbwrhtqifyoeikz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2836
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\gixrrgbwrhtqifyoeikz.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:1532
  • C:\Windows\iivnlyrkdrbwmhymac.exe
    iivnlyrkdrbwmhymac.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4544
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\iivnlyrkdrbwmhymac.exe*."
      2⤵
      • Executes dropped EXE
      PID:228
  • C:\Users\Admin\AppData\Local\Temp\zykbykcumzicrlbob.exe
    C:\Users\Admin\AppData\Local\Temp\zykbykcumzicrlbob.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1888
  • C:\Windows\gixrrgbwrhtqifyoeikz.exe
    gixrrgbwrhtqifyoeikz.exe
    1⤵
    • Executes dropped EXE
    PID:1260
  • C:\Windows\zykbykcumzicrlbob.exe
    zykbykcumzicrlbob.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3948
  • C:\Windows\iivnlyrkdrbwmhymac.exe
    iivnlyrkdrbwmhymac.exe
    1⤵
    • Executes dropped EXE
    PID:1392
  • C:\Users\Admin\AppData\Local\Temp\gixrrgbwrhtqifyoeikz.exe
    C:\Users\Admin\AppData\Local\Temp\gixrrgbwrhtqifyoeikz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4588
  • C:\Windows\vyojkawsofsqjhbsjorhc.exe
    vyojkawsofsqjhbsjorhc.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2652
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\vyojkawsofsqjhbsjorhc.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:6064
  • C:\Users\Admin\AppData\Local\Temp\tuibaoicwlwsjfxmbef.exe
    C:\Users\Admin\AppData\Local\Temp\tuibaoicwlwsjfxmbef.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3244
  • C:\Windows\zykbykcumzicrlbob.exe
    zykbykcumzicrlbob.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1388
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\zykbykcumzicrlbob.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:2248

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

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

        tikrego.exe
        • Path C:\Users\Admin\AppData\Local\Temp\tikrego.exe
        • Size 724KB
        • SHA256 2c1622ce5aa2ed7eca953785b1870fc1a50a99facc4a1cb266024f392dec9eb0
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        sqbrnypgxjrkyrgseecndzkbsjvdwkdseqqozp.wne
        • Path C:\Users\Admin\AppData\Local\sqbrnypgxjrkyrgseecndzkbsjvdwkdseqqozp.wne
        • Size 3KB
        • SHA256 5c36527234f2c5735c46b359005ed7d41f6bb025d823ec2ab66bf3c4d8cf136f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        viinyyekqrowzhlmncppufflrxy.dgo
        • Path C:\Users\Admin\AppData\Local\viinyyekqrowzhlmncppufflrxy.dgo
        • Size 272B
        • SHA256 d255a1385a7bd02b9acc28113f6fc71bf8254d6315deac93ea3399779742dbc8
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        iivnlyrkdrbwmhymac.exe
        • Path C:\Windows\SysWOW64\iivnlyrkdrbwmhymac.exe
        • Size 600KB
        • SHA256 5b3dc82ddc8865d7d06be428110829154be48e3345b91a663e4e2435a14d8497
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download