Overview

overview

10

Static

static

3

tmpia6aetn4.exe

windows10-ltsc_2021-x64

10

tmpia6aetn4.exe

windows10-2004-x64

10

tmpia6aetn4.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/05/2026, 14:37

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General

  • Target
    tmpia6aetn4.exe
  • Size 656KB
  • Sample260522-ry6f3ad18q
  • SHA256 981060a1e46587bf0a8a8a74b64ab520240c502326cfa347a72b10f73c59a1c8
  • 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 6 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 20 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\tmpia6aetn4.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpia6aetn4.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3400
    • C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe
      "C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe" "c:\users\admin\appdata\local\temp\tmpia6aetn4.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:1636
      • C:\Users\Admin\AppData\Local\Temp\wdjlv.exe
        "C:\Users\Admin\AppData\Local\Temp\wdjlv.exe" "-C:\Users\Admin\AppData\Local\Temp\tlcpkcqjzjrcqeah.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 Location Discovery: System Language Discovery
        • System policy modification
        PID:4544
      • C:\Users\Admin\AppData\Local\Temp\wdjlv.exe
        "C:\Users\Admin\AppData\Local\Temp\wdjlv.exe" "-C:\Users\Admin\AppData\Local\Temp\tlcpkcqjzjrcqeah.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:4836
    • C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe
      "C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe" "c:\users\admin\appdata\local\temp\tmpia6aetn4.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:2492
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3244
  • C:\Windows\upjzxsjfylwkbsrbamy.exe
    upjzxsjfylwkbsrbamy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2092
  • C:\Users\Admin\AppData\Local\Temp\atlzvodxoziujyvda.exe
    C:\Users\Admin\AppData\Local\Temp\atlzvodxoziujyvda.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4084
  • C:\Windows\upjzxsjfylwkbsrbamy.exe
    upjzxsjfylwkbsrbamy.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\ioxgxzqusyh.exe
      "C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe" "c:\windows\upjzxsjfylwkbsrbamy.exe*."
      2⤵
      • Executes dropped EXE
      PID:2532
  • C:\Users\Admin\AppData\Local\Temp\tlcpkcqjzjrcqeah.exe
    C:\Users\Admin\AppData\Local\Temp\tlcpkcqjzjrcqeah.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3900
  • C:\Windows\wtphhexvqfsibuvhiwkhd.exe
    wtphhexvqfsibuvhiwkhd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:572
  • C:\Windows\jdwlicsnfrboeusbzk.exe
    jdwlicsnfrboeusbzk.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:916
    • C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe
      "C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe" "c:\windows\jdwlicsnfrboeusbzk.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:1128
  • C:\Users\Admin\AppData\Local\Temp\upjzxsjfylwkbsrbamy.exe
    C:\Users\Admin\AppData\Local\Temp\upjzxsjfylwkbsrbamy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3628
  • C:\Windows\hdypokczthtiassddqdz.exe
    hdypokczthtiassddqdz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2940
    • C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe
      "C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe" "c:\windows\hdypokczthtiassddqdz.exe*."
      2⤵
      • Executes dropped EXE
      PID:1224
  • C:\Windows\tlcpkcqjzjrcqeah.exe
    tlcpkcqjzjrcqeah.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4616
  • C:\Windows\atlzvodxoziujyvda.exe
    atlzvodxoziujyvda.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3488
  • C:\Windows\jdwlicsnfrboeusbzk.exe
    jdwlicsnfrboeusbzk.exe
    1⤵
    • Executes dropped EXE
    PID:2324
  • C:\Users\Admin\AppData\Local\Temp\hdypokczthtiassddqdz.exe
    C:\Users\Admin\AppData\Local\Temp\hdypokczthtiassddqdz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4468
  • C:\Windows\wtphhexvqfsibuvhiwkhd.exe
    wtphhexvqfsibuvhiwkhd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe
      "C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe" "c:\windows\wtphhexvqfsibuvhiwkhd.exe*."
      2⤵
      • Executes dropped EXE
      PID:4976
  • C:\Users\Admin\AppData\Local\Temp\jdwlicsnfrboeusbzk.exe
    C:\Users\Admin\AppData\Local\Temp\jdwlicsnfrboeusbzk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2604
  • C:\Users\Admin\AppData\Local\Temp\wtphhexvqfsibuvhiwkhd.exe
    C:\Users\Admin\AppData\Local\Temp\wtphhexvqfsibuvhiwkhd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:884
  • C:\Windows\atlzvodxoziujyvda.exe
    atlzvodxoziujyvda.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4252
    • C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe
      "C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe" "c:\windows\atlzvodxoziujyvda.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:2304
  • C:\Windows\hdypokczthtiassddqdz.exe
    hdypokczthtiassddqdz.exe
    1⤵
    • Executes dropped EXE
    PID:3760
  • C:\Windows\tlcpkcqjzjrcqeah.exe
    tlcpkcqjzjrcqeah.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4104
    • C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe
      "C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe" "c:\windows\tlcpkcqjzjrcqeah.exe*."
      2⤵
      • Executes dropped EXE
      PID:4684

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

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        Downloads

        ioxgxzqusyh.exe
        • Path C:\Users\Admin\AppData\Local\Temp\ioxgxzqusyh.exe
        • Size 320KB
        • SHA256 c8c542ac3f6526d1501c2b9d6262bfa029a1ac0d9dd6b3c1965977abdd8bd126
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        wdjlv.exe
        • Path C:\Users\Admin\AppData\Local\Temp\wdjlv.exe
        • Size 736KB
        • SHA256 da415986bb074ba681a26465dadef9b5319c8e9aff8d909f8f4fc341db6dfbbc
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tfqxmygtdhjoweuvlordovkwerbfhmuc.tjm
        • Path C:\Users\Admin\AppData\Local\tfqxmygtdhjoweuvlordovkwerbfhmuc.tjm
        • Size 3KB
        • SHA256 54d0b4706d6e8e5f651cc7a522a044c7b4a98a6f6be590d34eda3a20f722393b
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yzzvzaxzyriczwbrwoghh.hif
        • Path C:\Users\Admin\AppData\Local\yzzvzaxzyriczwbrwoghh.hif
        • Size 272B
        • SHA256 b9af74f56c838b3bb2db6700ffb506b8e21a355285591c06d6faeae2e9acb926
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jdwlicsnfrboeusbzk.exe
        • Path C:\Windows\SysWOW64\jdwlicsnfrboeusbzk.exe
        • Size 656KB
        • SHA256 981060a1e46587bf0a8a8a74b64ab520240c502326cfa347a72b10f73c59a1c8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download