Overview

overview

10

Static

static

3

tmp9fsplm0t.exe

windows10-ltsc_2021-x64

10

tmp9fsplm0t.exe

windows10-2004-x64

10

tmp9fsplm0t.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
    22/05/2026, 15:20

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General

  • Target
    tmp9fsplm0t.exe
  • Size 548KB
  • Sample260522-sq37eahy4t
  • 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 8 IoCs
    persistence
  • UAC bypass 3 TTPs 17 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 42 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 16 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 60 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 60 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 46 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp9fsplm0t.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp9fsplm0t.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1608
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\users\admin\appdata\local\temp\tmp9fsplm0t.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:1740
      • C:\Users\Admin\AppData\Local\Temp\aelqdek.exe
        "C:\Users\Admin\AppData\Local\Temp\aelqdek.exe" "-C:\Users\Admin\AppData\Local\Temp\zmcqmwlhzffvslaw.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:5076
      • C:\Users\Admin\AppData\Local\Temp\aelqdek.exe
        "C:\Users\Admin\AppData\Local\Temp\aelqdek.exe" "-C:\Users\Admin\AppData\Local\Temp\zmcqmwlhzffvslaw.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:2080
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\users\admin\appdata\local\temp\tmp9fsplm0t.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:2816
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4888
  • C:\Windows\neyqqexxtdhbczsscpga.exe
    neyqqexxtdhbczsscpga.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\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\neyqqexxtdhbczsscpga.exe*."
      2⤵
      • Executes dropped EXE
      PID:4300
  • C:\Windows\pewmkwnlfnphgbsqyj.exe
    pewmkwnlfnphgbsqyj.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1664
  • C:\Users\Admin\AppData\Local\Temp\cupijystqbgbdbvwhvnib.exe
    C:\Users\Admin\AppData\Local\Temp\cupijystqbgbdbvwhvnib.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5104
  • C:\Windows\aqjazmedyhkddzrqzlb.exe
    aqjazmedyhkddzrqzlb.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2644
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\aqjazmedyhkddzrqzlb.exe*."
      2⤵
      • Executes dropped EXE
      PID:3968
  • C:\Users\Admin\AppData\Local\Temp\zmcqmwlhzffvslaw.exe
    C:\Users\Admin\AppData\Local\Temp\zmcqmwlhzffvslaw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4644
  • C:\Windows\cupijystqbgbdbvwhvnib.exe
    cupijystqbgbdbvwhvnib.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:724
  • C:\Windows\zmcqmwlhzffvslaw.exe
    zmcqmwlhzffvslaw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1980
  • C:\Windows\gulaxiyvovwnlfvsz.exe
    gulaxiyvovwnlfvsz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5092
  • C:\Windows\cupijystqbgbdbvwhvnib.exe
    cupijystqbgbdbvwhvnib.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3708
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\cupijystqbgbdbvwhvnib.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:412
  • C:\Users\Admin\AppData\Local\Temp\pewmkwnlfnphgbsqyj.exe
    C:\Users\Admin\AppData\Local\Temp\pewmkwnlfnphgbsqyj.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1756
  • C:\Windows\pewmkwnlfnphgbsqyj.exe
    pewmkwnlfnphgbsqyj.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4032
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\pewmkwnlfnphgbsqyj.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:1408
  • C:\Windows\neyqqexxtdhbczsscpga.exe
    neyqqexxtdhbczsscpga.exe
    1⤵
    • Executes dropped EXE
    PID:4520
  • C:\Users\Admin\AppData\Local\Temp\neyqqexxtdhbczsscpga.exe
    C:\Users\Admin\AppData\Local\Temp\neyqqexxtdhbczsscpga.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1284
  • C:\Windows\gulaxiyvovwnlfvsz.exe
    gulaxiyvovwnlfvsz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\gulaxiyvovwnlfvsz.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:4444
  • C:\Users\Admin\AppData\Local\Temp\aqjazmedyhkddzrqzlb.exe
    C:\Users\Admin\AppData\Local\Temp\aqjazmedyhkddzrqzlb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5016
  • C:\Windows\aqjazmedyhkddzrqzlb.exe
    aqjazmedyhkddzrqzlb.exe
    1⤵
    • Executes dropped EXE
    PID:3616
  • C:\Users\Admin\AppData\Local\Temp\gulaxiyvovwnlfvsz.exe
    C:\Users\Admin\AppData\Local\Temp\gulaxiyvovwnlfvsz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1904
  • C:\Windows\zmcqmwlhzffvslaw.exe
    zmcqmwlhzffvslaw.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:972
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\zmcqmwlhzffvslaw.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:3488

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

        aelqdek.exe
        • Path C:\Users\Admin\AppData\Local\Temp\aelqdek.exe
        • Size 696KB
        • SHA256 535b382a29757885a92c9709b9e8d5a3833bd4ef0338349b9a07bfb29f61353d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        mhskyizawrc.exe
        • Path C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
        • Size 320KB
        • SHA256 82e727b31beca6a923d24410b2fadba7978351df1f28205e6b04cb868606cedd
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        daayeyxdfvffmpoukdaaye.xdf
        • Path C:\Users\Admin\AppData\Local\daayeyxdfvffmpoukdaaye.xdf
        • Size 280B
        • SHA256 a0c1a903a7e049466092c7f93b4799fd0288bf06661973b8369c242409195403
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ucnwnsctghcnftduvzhsbsxhylmhskyiz.emx
        • Path C:\Users\Admin\AppData\Local\ucnwnsctghcnftduvzhsbsxhylmhskyiz.emx
        • Size 4KB
        • SHA256 e4d2a2f7e149876c875c2570d65ec486e0f2020ce99c8b67c85f8a739a533416
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

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