Overview

overview

10

Static

static

3

tmp1kmdlafb.exe

windows10-ltsc_2021-x64

10

tmp1kmdlafb.exe

windows10-2004-x64

10

tmp1kmdlafb.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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, 03:32

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General

  • Target
    tmp1kmdlafb.exe
  • Size 480KB
  • Sample260602-d3pgfses9n
  • SHA256 2e7aa86c211bcba2701f0d5acd491714bcbaf5f5cd6e930bc9795fdfb2a7f859
  • 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
  • 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 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 7 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 55 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\tmp1kmdlafb.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp1kmdlafb.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4080
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\users\admin\appdata\local\temp\tmp1kmdlafb.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:4664
      • C:\Users\Admin\AppData\Local\Temp\uamsvcs.exe
        "C:\Users\Admin\AppData\Local\Temp\uamsvcs.exe" "-c:\users\admin\appdata\local\temp\tmp1kmdlafb.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:3136
      • C:\Users\Admin\AppData\Local\Temp\uamsvcs.exe
        "C:\Users\Admin\AppData\Local\Temp\uamsvcs.exe" "-c:\users\admin\appdata\local\temp\tmp1kmdlafb.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:4576
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\users\admin\appdata\local\temp\tmp1kmdlafb.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:4112
  • C:\Windows\hazsicfxohaxjjxtyjcb.exe
    hazsicfxohaxjjxtyjcb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4020
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3548
  • C:\Users\Admin\AppData\Local\Temp\hazsicfxohaxjjxtyjcb.exe
    C:\Users\Admin\AppData\Local\Temp\hazsicfxohaxjjxtyjcb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1080
  • C:\Windows\aqmcpggvjzpjspatv.exe
    aqmcpggvjzpjspatv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2960
  • C:\Windows\aqmcpggvjzpjspatv.exe
    aqmcpggvjzpjspatv.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\aqmcpggvjzpjspatv.exe*."
      2⤵
      • Executes dropped EXE
      PID:3632
  • C:\Windows\umkcrkmdtldzkjwrvfx.exe
    umkcrkmdtldzkjwrvfx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\umkcrkmdtldzkjwrvfx.exe*."
      2⤵
      • Executes dropped EXE
      PID:2668
  • C:\Users\Admin\AppData\Local\Temp\tidseuthujyrzvfx.exe
    C:\Users\Admin\AppData\Local\Temp\tidseuthujyrzvfx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2596
  • C:\Windows\umkcrkmdtldzkjwrvfx.exe
    umkcrkmdtldzkjwrvfx.exe
    1⤵
    • Executes dropped EXE
    PID:4288
  • C:\Windows\jaxocuvlaridnlxrud.exe
    jaxocuvlaridnlxrud.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4276
  • C:\Windows\jaxocuvlaridnlxrud.exe
    jaxocuvlaridnlxrud.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\jaxocuvlaridnlxrud.exe*."
      2⤵
      • Executes dropped EXE
      PID:4876
  • C:\Users\Admin\AppData\Local\Temp\jaxocuvlaridnlxrud.exe
    C:\Users\Admin\AppData\Local\Temp\jaxocuvlaridnlxrud.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3548
  • C:\Windows\wqqkbwatlfzxklaxdpjjd.exe
    wqqkbwatlfzxklaxdpjjd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4024
  • C:\Users\Admin\AppData\Local\Temp\umkcrkmdtldzkjwrvfx.exe
    C:\Users\Admin\AppData\Local\Temp\umkcrkmdtldzkjwrvfx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2084
  • C:\Windows\tidseuthujyrzvfx.exe
    tidseuthujyrzvfx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1952
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\tidseuthujyrzvfx.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:1780
  • C:\Windows\wqqkbwatlfzxklaxdpjjd.exe
    wqqkbwatlfzxklaxdpjjd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4364
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\wqqkbwatlfzxklaxdpjjd.exe*."
      2⤵
      • Executes dropped EXE
      PID:532
  • C:\Windows\tidseuthujyrzvfx.exe
    tidseuthujyrzvfx.exe
    1⤵
    • Executes dropped EXE
    PID:412
  • C:\Users\Admin\AppData\Local\Temp\aqmcpggvjzpjspatv.exe
    C:\Users\Admin\AppData\Local\Temp\aqmcpggvjzpjspatv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2912
  • C:\Windows\hazsicfxohaxjjxtyjcb.exe
    hazsicfxohaxjjxtyjcb.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3792
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\hazsicfxohaxjjxtyjcb.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:3844
  • C:\Users\Admin\AppData\Local\Temp\wqqkbwatlfzxklaxdpjjd.exe
    C:\Users\Admin\AppData\Local\Temp\wqqkbwatlfzxklaxdpjjd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3824

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

        bcjkikvvuvwbvdzdqjkrsqsd.cde
        • Path C:\Program Files (x86)\bcjkikvvuvwbvdzdqjkrsqsd.cde
        • Size 120B
        • SHA256 37abd82588a7ae5fb595a7be97dac91de828625e7e7c38f57d7b56f5e4e91583
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        bcjkikvvuvwbvdzdqjkrsqsd.cde
        • Path C:\Program Files (x86)\bcjkikvvuvwbvdzdqjkrsqsd.cde
        • Size 120B
        • SHA256 a9444f3e2f38b62965f179e88e6ffdb9efb0ddd644be78267e03250953d1ec6c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

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

        uamsvcs.exe
        • Path C:\Users\Admin\AppData\Local\Temp\uamsvcs.exe
        • Size 648KB
        • SHA256 bcc969a45cce63f9d83c76c64e34dcec8c8986d5fc0494e2da1aac5c9394eb75
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        bcjkikvvuvwbvdzdqjkrsqsd.cde
        • Path C:\Users\Admin\AppData\Local\bcjkikvvuvwbvdzdqjkrsqsd.cde
        • Size 120B
        • SHA256 81cc003a4bfc61ee17997be636dd062de8e5c2344f58cc9ee19514375de6917c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        bcjkikvvuvwbvdzdqjkrsqsd.cde
        • Path C:\Users\Admin\AppData\Local\bcjkikvvuvwbvdzdqjkrsqsd.cde
        • Size 120B
        • SHA256 4b87eb5412fde31c918d2e6b6c35924aa968273a84c6e4ab3c672a8315aface4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        kwoajwsdnzlbgzgvtxjbnwjfqamyotmtigk.oaj
        • Path C:\Users\Admin\AppData\Local\kwoajwsdnzlbgzgvtxjbnwjfqamyotmtigk.oaj
        • Size 3KB
        • SHA256 0a850c796d41db344fc034cd8f2bbc6e67112966617e8f7fcdc2488c7d0f5185
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jaxocuvlaridnlxrud.exe
        • Path C:\Windows\SysWOW64\jaxocuvlaridnlxrud.exe
        • Size 480KB
        • SHA256 2e7aa86c211bcba2701f0d5acd491714bcbaf5f5cd6e930bc9795fdfb2a7f859
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download