Overview

overview

10

Static

static

3

tmp2y9xv4je.exe

windows10-ltsc_2021-x64

10

tmp2y9xv4je.exe

windows10-2004-x64

10

tmp2y9xv4je.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • 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, 03:44

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General

  • Target
    tmp2y9xv4je.exe
  • Size 548KB
  • Sample260602-eazbmaew2p
  • SHA256 47b0c68c97a03bd0a32d47e9f3b220078bf78d693b1ea661a29b8f8e13f4124d
  • 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
  • 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 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 10 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\tmp2y9xv4je.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp2y9xv4je.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4364
    • C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe
      "C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe" "c:\users\admin\appdata\local\temp\tmp2y9xv4je.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:3804
      • C:\Users\Admin\AppData\Local\Temp\ioxdfn.exe
        "C:\Users\Admin\AppData\Local\Temp\ioxdfn.exe" "-C:\Users\Admin\AppData\Local\Temp\ukdtfxlbxhsanblm.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:4228
      • C:\Users\Admin\AppData\Local\Temp\ioxdfn.exe
        "C:\Users\Admin\AppData\Local\Temp\ioxdfn.exe" "-C:\Users\Admin\AppData\Local\Temp\ukdtfxlbxhsanblm.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:4632
    • C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe
      "C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe" "c:\users\admin\appdata\local\temp\tmp2y9xv4je.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:1192
  • C:\Windows\xsqlczsnodtgyrgmqalge.exe
    xsqlczsnodtgyrgmqalge.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1532
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4536
  • C:\Windows\vokdsnexwjxiypcgiqz.exe
    vokdsnexwjxiypcgiqz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:640
    • C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe
      "C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe" "c:\windows\vokdsnexwjxiypcgiqz.exe*."
      2⤵
      • Executes dropped EXE
      PID:544
  • C:\Windows\bsmdqjypmxjsgvgii.exe
    bsmdqjypmxjsgvgii.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5028
    • C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe
      "C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe" "c:\windows\bsmdqjypmxjsgvgii.exe*."
      2⤵
      • Executes dropped EXE
      PID:4796
  • C:\Users\Admin\AppData\Local\Temp\icztjfxrrfugxpdiluey.exe
    C:\Users\Admin\AppData\Local\Temp\icztjfxrrfugxpdiluey.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5096
  • C:\Users\Admin\AppData\Local\Temp\vokdsnexwjxiypcgiqz.exe
    C:\Users\Admin\AppData\Local\Temp\vokdsnexwjxiypcgiqz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5012
  • C:\Windows\bsmdqjypmxjsgvgii.exe
    bsmdqjypmxjsgvgii.exe
    1⤵
    • Executes dropped EXE
    PID:2372
  • C:\Windows\kcxpdxnfdpcmbrdgho.exe
    kcxpdxnfdpcmbrdgho.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:768
  • C:\Windows\icztjfxrrfugxpdiluey.exe
    icztjfxrrfugxpdiluey.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3284
  • C:\Windows\icztjfxrrfugxpdiluey.exe
    icztjfxrrfugxpdiluey.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1548
    • C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe
      "C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe" "c:\windows\icztjfxrrfugxpdiluey.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:3808
  • C:\Windows\kcxpdxnfdpcmbrdgho.exe
    kcxpdxnfdpcmbrdgho.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe
      "C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe" "c:\windows\kcxpdxnfdpcmbrdgho.exe*."
      2⤵
      • Executes dropped EXE
      PID:4884
  • C:\Users\Admin\AppData\Local\Temp\kcxpdxnfdpcmbrdgho.exe
    C:\Users\Admin\AppData\Local\Temp\kcxpdxnfdpcmbrdgho.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4380
  • C:\Windows\ukdtfxlbxhsanblm.exe
    ukdtfxlbxhsanblm.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2420
    • C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe
      "C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe" "c:\windows\ukdtfxlbxhsanblm.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:3872
  • C:\Windows\ukdtfxlbxhsanblm.exe
    ukdtfxlbxhsanblm.exe
    1⤵
    • Executes dropped EXE
    PID:4792
  • C:\Users\Admin\AppData\Local\Temp\xsqlczsnodtgyrgmqalge.exe
    C:\Users\Admin\AppData\Local\Temp\xsqlczsnodtgyrgmqalge.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1932
  • C:\Users\Admin\AppData\Local\Temp\ukdtfxlbxhsanblm.exe
    C:\Users\Admin\AppData\Local\Temp\ukdtfxlbxhsanblm.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:928
  • C:\Users\Admin\AppData\Local\Temp\bsmdqjypmxjsgvgii.exe
    C:\Users\Admin\AppData\Local\Temp\bsmdqjypmxjsgvgii.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:540
  • C:\Windows\vokdsnexwjxiypcgiqz.exe
    vokdsnexwjxiypcgiqz.exe
    1⤵
    • Executes dropped EXE
    PID:1980
  • C:\Windows\xsqlczsnodtgyrgmqalge.exe
    xsqlczsnodtgyrgmqalge.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3720
    • C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe
      "C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe" "c:\windows\xsqlczsnodtgyrgmqalge.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:1888

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

        ioxdfn.exe
        • Path C:\Users\Admin\AppData\Local\Temp\ioxdfn.exe
        • Size 724KB
        • SHA256 7ed38619b9451b6631b450fab5ee4723dea55a05cddac4bc380c55fcd9ed401d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        jmudieyytwe.exe
        • Path C:\Users\Admin\AppData\Local\Temp\jmudieyytwe.exe
        • Size 320KB
        • SHA256 2a29d19d4b8fe0dc0c79d5f734b865ccddef573ea99a2a4154c20123a02859bf
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        cejljnnpxtqkjjfsdumotvtx.zhd
        • Path C:\Users\Admin\AppData\Local\cejljnnpxtqkjjfsdumotvtx.zhd
        • Size 280B
        • SHA256 5b1efd55d0b619ac6dfd7ef7fd52d555948b693b53c33fb74f13b7a8c7b3cbe9
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lyobkzkxqxfkufmkgilyobkzkxqxfkufmkg.lyo
        • Path C:\Users\Admin\AppData\Local\lyobkzkxqxfkufmkgilyobkzkxqxfkufmkg.lyo
        • Size 4KB
        • SHA256 0a368eae5f10d5799193ed8499efcb067d5787d33c75e9dfb0214e6a08cd468d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        kcxpdxnfdpcmbrdgho.exe
        • Path C:\Windows\SysWOW64\kcxpdxnfdpcmbrdgho.exe
        • Size 548KB
        • SHA256 47b0c68c97a03bd0a32d47e9f3b220078bf78d693b1ea661a29b8f8e13f4124d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download