Overview

overview

10

Static

static

3

tmpwqfbwni_.exe

windows10-ltsc_2021-x64

10

tmpwqfbwni_.exe

windows10-2004-x64

10

tmpwqfbwni_.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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
    tmpwqfbwni_.exe
  • Size 572KB
  • Sample260602-eg6dhsdv2x
  • SHA256 1364c5f9a11996c761040823e43e41547f52147aafd7fc4bf910d98a4c30eacb
  • 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 5 IoCs
    persistence
  • UAC bypass 3 TTPs 14 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 33 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 10 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 64 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 47 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 17 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 40 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpwqfbwni_.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpwqfbwni_.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5064
    • C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe
      "C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe" "c:\users\admin\appdata\local\temp\tmpwqfbwni_.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:3452
      • C:\Users\Admin\AppData\Local\Temp\telqvlq.exe
        "C:\Users\Admin\AppData\Local\Temp\telqvlq.exe" "-c:\users\admin\appdata\local\temp\tmpwqfbwni_.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:1544
      • C:\Users\Admin\AppData\Local\Temp\telqvlq.exe
        "C:\Users\Admin\AppData\Local\Temp\telqvlq.exe" "-c:\users\admin\appdata\local\temp\tmpwqfbwni_.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:1128
    • C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe
      "C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe" "c:\users\admin\appdata\local\temp\tmpwqfbwni_.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:3336
  • C:\Windows\tqjartkcpmzbokqdzzx.exe
    tqjartkcpmzbokqdzzx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1088
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2844
  • C:\Users\Admin\AppData\Local\Temp\tqjartkcpmzbokqdzzx.exe
    C:\Users\Admin\AppData\Local\Temp\tqjartkcpmzbokqdzzx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1812
  • C:\Windows\tqjartkcpmzbokqdzzx.exe
    tqjartkcpmzbokqdzzx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4984
    • C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe
      "C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe" "c:\windows\tqjartkcpmzbokqdzzx.exe*."
      2⤵
      • Executes dropped EXE
      PID:3416
  • C:\Windows\vupibfyshgvzomujhjjid.exe
    vupibfyshgvzomujhjjid.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2356
    • C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe
      "C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe" "c:\windows\vupibfyshgvzomujhjjid.exe*."
      2⤵
      • Executes dropped EXE
      PID:2236
  • C:\Windows\vupibfyshgvzomujhjjid.exe
    vupibfyshgvzomujhjjid.exe
    1⤵
    • Executes dropped EXE
    PID:4188
  • C:\Windows\geyqildwkiwznkrfcdca.exe
    geyqildwkiwznkrfcdca.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2868
  • C:\Windows\zulappeufallwqufz.exe
    zulappeufallwqufz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4516
    • C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe
      "C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe" "c:\windows\zulappeufallwqufz.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:4308
  • C:\Users\Admin\AppData\Local\Temp\zulappeufallwqufz.exe
    C:\Users\Admin\AppData\Local\Temp\zulappeufallwqufz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4932
  • C:\Windows\smcqedrgqkutdwzj.exe
    smcqedrgqkutdwzj.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4968
    • C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe
      "C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe" "c:\windows\smcqedrgqkutdwzj.exe*."
      2⤵
      • Executes dropped EXE
      PID:1868
  • C:\Windows\geyqildwkiwznkrfcdca.exe
    geyqildwkiwznkrfcdca.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2444
    • C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe
      "C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe" "c:\windows\geyqildwkiwznkrfcdca.exe*."
      2⤵
      • Executes dropped EXE
      PID:1504
  • C:\Users\Admin\AppData\Local\Temp\vupibfyshgvzomujhjjid.exe
    C:\Users\Admin\AppData\Local\Temp\vupibfyshgvzomujhjjid.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3416
  • C:\Users\Admin\AppData\Local\Temp\iewmcdtkwsefrmrdyx.exe
    C:\Users\Admin\AppData\Local\Temp\iewmcdtkwsefrmrdyx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2392
  • C:\Windows\iewmcdtkwsefrmrdyx.exe
    iewmcdtkwsefrmrdyx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2440
    • C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe
      "C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe" "c:\windows\iewmcdtkwsefrmrdyx.exe*."
      2⤵
      • Executes dropped EXE
      PID:1004
  • C:\Windows\zulappeufallwqufz.exe
    zulappeufallwqufz.exe
    1⤵
    • Executes dropped EXE
    PID:2464
  • C:\Users\Admin\AppData\Local\Temp\smcqedrgqkutdwzj.exe
    C:\Users\Admin\AppData\Local\Temp\smcqedrgqkutdwzj.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2888
  • C:\Windows\smcqedrgqkutdwzj.exe
    smcqedrgqkutdwzj.exe
    1⤵
    • Executes dropped EXE
    PID:1328
  • C:\Users\Admin\AppData\Local\Temp\geyqildwkiwznkrfcdca.exe
    C:\Users\Admin\AppData\Local\Temp\geyqildwkiwznkrfcdca.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3876
  • C:\Windows\iewmcdtkwsefrmrdyx.exe
    iewmcdtkwsefrmrdyx.exe
    1⤵
    • Executes dropped EXE
    PID:2120

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

        agiiittuqwsdzetpudkqsssd.eag
        • Path C:\Program Files (x86)\agiiittuqwsdzetpudkqsssd.eag
        • Size 120B
        • SHA256 87cfb1564413dddc4494b4884da2710092b5119fe636b8a49e2d9fc759163c2d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        agiiittuqwsdzetpudkqsssd.eag
        • Path C:\Program Files (x86)\agiiittuqwsdzetpudkqsssd.eag
        • Size 120B
        • SHA256 f772d4b4549e55701c418f5bde4e08c1d27c79a0f5ab96d138dae323e7d9c4b7
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        agiiittuqwsdzetpudkqsssd.eag
        • Path C:\Program Files (x86)\agiiittuqwsdzetpudkqsssd.eag
        • Size 120B
        • SHA256 fc70d9176f492a291ea3f975a8add2f561893900f978e7fe361d8d31d552c70d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lfkywbphvpu.exe
        • Path C:\Users\Admin\AppData\Local\Temp\lfkywbphvpu.exe
        • Size 308KB
        • SHA256 6fff20aabe8265b6e811c9dbcb987f9c15cf07d1d8b80ced7b287d96900f5c62
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        telqvlq.exe
        • Path C:\Users\Admin\AppData\Local\Temp\telqvlq.exe
        • Size 680KB
        • SHA256 8d95ea689864ff2393b5d558056445e0fca540202fb6aaf220bb35a8becae95d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        agiiittuqwsdzetpudkqsssd.eag
        • Path C:\Users\Admin\AppData\Local\agiiittuqwsdzetpudkqsssd.eag
        • Size 120B
        • SHA256 38fe97d6bfa9701846a8a21fabcc0f7978dc0a8f0d8113c08c4e43f3bb85a594
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        janyjfqcjahdkaahxrjanyjfqcjahdkaahx.jan
        • Path C:\Users\Admin\AppData\Local\janyjfqcjahdkaahxrjanyjfqcjahdkaahx.jan
        • Size 3KB
        • SHA256 7a50487d01bdad923037a319c38ad6a0e4fdfa72384ad71d638895dbe70d3d61
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        iewmcdtkwsefrmrdyx.exe
        • Path C:\Windows\SysWOW64\iewmcdtkwsefrmrdyx.exe
        • Size 572KB
        • SHA256 1364c5f9a11996c761040823e43e41547f52147aafd7fc4bf910d98a4c30eacb
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download