Overview

overview

10

Static

static

3

tmpq3wfd43w.exe

windows10-ltsc_2021-x64

10

tmpq3wfd43w.exe

windows10-2004-x64

10

tmpq3wfd43w.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/05/2026, 14:45

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General

  • Target
    tmpq3wfd43w.exe
  • Size 1016KB
  • Sample260522-r4845set8r
  • SHA256 4ead061ce77e00a73922495a1c9298df7913b866deb7d80ddc8d5f35b6a55763
  • 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 36 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\tmpq3wfd43w.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpq3wfd43w.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\users\admin\appdata\local\temp\tmpq3wfd43w.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:4776
      • C:\Users\Admin\AppData\Local\Temp\ipbdiq.exe
        "C:\Users\Admin\AppData\Local\Temp\ipbdiq.exe" "-C:\Users\Admin\AppData\Local\Temp\ulhtialisimvqtxc.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:3292
      • C:\Users\Admin\AppData\Local\Temp\ipbdiq.exe
        "C:\Users\Admin\AppData\Local\Temp\ipbdiq.exe" "-C:\Users\Admin\AppData\Local\Temp\ulhtialisimvqtxc.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:1096
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\users\admin\appdata\local\temp\tmpq3wfd43w.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:4608
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3056
  • C:\Windows\vpodvqeerkrdbhowlhz.exe
    vpodvqeerkrdbhowlhz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4128
  • C:\Windows\iddtmixymgobahpyolez.exe
    iddtmixymgobahpyolez.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2600
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\iddtmixymgobahpyolez.exe*."
      2⤵
      • Executes dropped EXE
      PID:5020
  • C:\Windows\xtulfcsujenbbjsctrlhi.exe
    xtulfcsujenbbjsctrlhi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2596
  • C:\Windows\btqdtmywhydnjnsyl.exe
    btqdtmywhydnjnsyl.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3816
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\btqdtmywhydnjnsyl.exe*."
      2⤵
      • Executes dropped EXE
      PID:4044
  • C:\Users\Admin\AppData\Local\Temp\xtulfcsujenbbjsctrlhi.exe
    C:\Users\Admin\AppData\Local\Temp\xtulfcsujenbbjsctrlhi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4772
  • C:\Users\Admin\AppData\Local\Temp\vpodvqeerkrdbhowlhz.exe
    C:\Users\Admin\AppData\Local\Temp\vpodvqeerkrdbhowlhz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1312
  • C:\Windows\ulhtialisimvqtxc.exe
    ulhtialisimvqtxc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:800
  • C:\Windows\xtulfcsujenbbjsctrlhi.exe
    xtulfcsujenbbjsctrlhi.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4592
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\xtulfcsujenbbjsctrlhi.exe*."
      2⤵
      • Executes dropped EXE
      PID:5060
  • C:\Windows\kdbpganmyqwhejpwkf.exe
    kdbpganmyqwhejpwkf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2016
  • C:\Windows\ulhtialisimvqtxc.exe
    ulhtialisimvqtxc.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1844
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\ulhtialisimvqtxc.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:4328
  • C:\Users\Admin\AppData\Local\Temp\kdbpganmyqwhejpwkf.exe
    C:\Users\Admin\AppData\Local\Temp\kdbpganmyqwhejpwkf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1916
  • C:\Windows\iddtmixymgobahpyolez.exe
    iddtmixymgobahpyolez.exe
    1⤵
    • Executes dropped EXE
    PID:1160
  • C:\Users\Admin\AppData\Local\Temp\ulhtialisimvqtxc.exe
    C:\Users\Admin\AppData\Local\Temp\ulhtialisimvqtxc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3408
  • C:\Windows\System32\Conhost.exe
    \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
    1⤵
      PID:4044
    • C:\Windows\btqdtmywhydnjnsyl.exe
      btqdtmywhydnjnsyl.exe
      1⤵
      • Executes dropped EXE
      PID:420
    • C:\Users\Admin\AppData\Local\Temp\btqdtmywhydnjnsyl.exe
      C:\Users\Admin\AppData\Local\Temp\btqdtmywhydnjnsyl.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2776
    • C:\Windows\kdbpganmyqwhejpwkf.exe
      kdbpganmyqwhejpwkf.exe .
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1864
      • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
        "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\kdbpganmyqwhejpwkf.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:3952
    • C:\Windows\vpodvqeerkrdbhowlhz.exe
      vpodvqeerkrdbhowlhz.exe .
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:724
      • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
        "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\vpodvqeerkrdbhowlhz.exe*."
        2⤵
        • Executes dropped EXE
        PID:2228
    • C:\Users\Admin\AppData\Local\Temp\iddtmixymgobahpyolez.exe
      C:\Users\Admin\AppData\Local\Temp\iddtmixymgobahpyolez.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3808

    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

          dhxvuubpnrh.exe
          • Path C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
          • Size 320KB
          • SHA256 9bedf6730ef361e905d834894bd0b3874a65ad059c73d6590bf10c23d899c1e7
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          ipbdiq.exe
          • Path C:\Users\Admin\AppData\Local\Temp\ipbdiq.exe
          • Size 692KB
          • SHA256 0845f3473e2554f46b194f25796534d68c1cc504de17932455cd09cf934caf31
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          mzrzkyfyeqqvmllmujuhzhsgngmyyduttu.rcp
          • Path C:\Users\Admin\AppData\Local\mzrzkyfyeqqvmllmujuhzhsgngmyyduttu.rcp
          • Size 4KB
          • SHA256 fc2f915ebb16bac401bb4f946f126b555f2fb5724d97304e1847e679e35c9513
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          zbiffiemhixrxlaqnrrtaxx.wez
          • Path C:\Users\Admin\AppData\Local\zbiffiemhixrxlaqnrrtaxx.wez
          • Size 280B
          • SHA256 401539cd921632093c04def6c588ff3b06b5ec06ae3882d395eb0b63bb297282
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          kdbpganmyqwhejpwkf.exe
          • Path C:\Windows\SysWOW64\kdbpganmyqwhejpwkf.exe
          • Size 1016KB
          • SHA256 4ead061ce77e00a73922495a1c9298df7913b866deb7d80ddc8d5f35b6a55763
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download