Overview

overview

10

Static

static

3

tmplc5ysqyh.exe

windows10-ltsc_2021-x64

10

tmplc5ysqyh.exe

windows10-2004-x64

10

tmplc5ysqyh.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    158s
  • 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, 02:20

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General

  • Target
    tmplc5ysqyh.exe
  • Size 532KB
  • Sample260602-csmpfabx3x
  • SHA256 4181ec24509fde4a5caf4365621fc8566782a855f1cb32a5a53f73875565b445
  • 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
  • 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 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 63 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 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmplc5ysqyh.exe
    "C:\Users\Admin\AppData\Local\Temp\tmplc5ysqyh.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3976
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\users\admin\appdata\local\temp\tmplc5ysqyh.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:2512
      • C:\Users\Admin\AppData\Local\Temp\cakxahl.exe
        "C:\Users\Admin\AppData\Local\Temp\cakxahl.exe" "-c:\users\admin\appdata\local\temp\tmplc5ysqyh.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 autorun.inf file
        • 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:2516
      • C:\Users\Admin\AppData\Local\Temp\cakxahl.exe
        "C:\Users\Admin\AppData\Local\Temp\cakxahl.exe" "-c:\users\admin\appdata\local\temp\tmplc5ysqyh.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:2780
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\users\admin\appdata\local\temp\tmplc5ysqyh.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:2768
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:848
  • C:\Windows\paxxnhyqlgduvyusthlw.exe
    paxxnhyqlgduvyusthlw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5672
  • C:\Windows\cmihwpfwqkgwwytqqdg.exe
    cmihwpfwqkgwwytqqdg.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:448
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\cmihwpfwqkgwwytqqdg.exe*."
      2⤵
      • Executes dropped EXE
      PID:5500
  • C:\Windows\iqkhulzogysgeexsq.exe
    iqkhulzogysgeexsq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:384
  • C:\Windows\iqkhulzogysgeexsq.exe
    iqkhulzogysgeexsq.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4312
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\iqkhulzogysgeexsq.exe*."
      2⤵
      • Executes dropped EXE
      PID:3500
  • C:\Users\Admin\AppData\Local\Temp\iqkhulzogysgeexsq.exe
    C:\Users\Admin\AppData\Local\Temp\iqkhulzogysgeexsq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5272
  • C:\Users\Admin\AppData\Local\Temp\ravthzoexqlazauqpb.exe
    C:\Users\Admin\AppData\Local\Temp\ravthzoexqlazauqpb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2236
  • C:\Windows\eqopgbtmiecuwaxwynsec.exe
    eqopgbtmiecuwaxwynsec.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4864
  • C:\Windows\bibxjzmaribolkcw.exe
    bibxjzmaribolkcw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3820
  • C:\Users\Admin\AppData\Local\Temp\eqopgbtmiecuwaxwynsec.exe
    C:\Users\Admin\AppData\Local\Temp\eqopgbtmiecuwaxwynsec.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5888
  • C:\Windows\cmihwpfwqkgwwytqqdg.exe
    cmihwpfwqkgwwytqqdg.exe
    1⤵
    • Executes dropped EXE
    PID:4208
  • C:\Windows\ravthzoexqlazauqpb.exe
    ravthzoexqlazauqpb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3632
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\ravthzoexqlazauqpb.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:1036
  • C:\Users\Admin\AppData\Local\Temp\paxxnhyqlgduvyusthlw.exe
    C:\Users\Admin\AppData\Local\Temp\paxxnhyqlgduvyusthlw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4736
  • C:\Users\Admin\AppData\Local\Temp\cmihwpfwqkgwwytqqdg.exe
    C:\Users\Admin\AppData\Local\Temp\cmihwpfwqkgwwytqqdg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5456
  • C:\Windows\bibxjzmaribolkcw.exe
    bibxjzmaribolkcw.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5508
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\bibxjzmaribolkcw.exe*."
      2⤵
      • Executes dropped EXE
      PID:3324
  • C:\Windows\paxxnhyqlgduvyusthlw.exe
    paxxnhyqlgduvyusthlw.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\paxxnhyqlgduvyusthlw.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:5048
  • C:\Windows\eqopgbtmiecuwaxwynsec.exe
    eqopgbtmiecuwaxwynsec.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3452
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\eqopgbtmiecuwaxwynsec.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:3104
  • C:\Windows\ravthzoexqlazauqpb.exe
    ravthzoexqlazauqpb.exe
    1⤵
    • Executes dropped EXE
    PID:1736
  • C:\Users\Admin\AppData\Local\Temp\bibxjzmaribolkcw.exe
    C:\Users\Admin\AppData\Local\Temp\bibxjzmaribolkcw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1808

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Replication Through Removable Media

        1
        T1091

        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

        Replication Through Removable Media

        1
        T1091

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        gycjghfegimkscfksnyquby.xwy
        • Path C:\Program Files (x86)\gycjghfegimkscfksnyquby.xwy
        • Size 120B
        • SHA256 b7c87f1c4199289e9b548ab001b807bd96a6d26e523d0cb5741d9ec940084a8b
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        gycjghfegimkscfksnyquby.xwy
        • Path C:\Program Files (x86)\gycjghfegimkscfksnyquby.xwy
        • Size 120B
        • SHA256 7d59d7a60326c0d31b5bcb4c080655ee334146792d69d6e3186f9e68f3d3826c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        cakxahl.exe
        • Path C:\Users\Admin\AppData\Local\Temp\cakxahl.exe
        • Size 688KB
        • SHA256 da0232cf2caa1e068b89cce6a490115b78d5e841f11d45b1b33218e07908ce97
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

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

        gycjghfegimkscfksnyquby.xwy
        • Path C:\Users\Admin\AppData\Local\gycjghfegimkscfksnyquby.xwy
        • Size 120B
        • SHA256 63bf0ab55a88627994650929cacadced6a328f86c82ef86aec7e9e4ac9b5949d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        gycjghfegimkscfksnyquby.xwy
        • Path C:\Users\Admin\AppData\Local\gycjghfegimkscfksnyquby.xwy
        • Size 120B
        • SHA256 b1aa244fcff65fbc071358ab754467d662debd4e5c44afb970c8f0ef81d6d0eb
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        gycjghfegimkscfksnyquby.xwy
        • Path C:\Users\Admin\AppData\Local\gycjghfegimkscfksnyquby.xwy
        • Size 120B
        • SHA256 acad95ec76d0b34b3adf4cfffba18c2444c55d8293ceb6df8d4dbd7b3f66ba20
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        twldlxgqdqfohcqgzfbetltfoylynwpkyo.njm
        • Path C:\Users\Admin\AppData\Local\twldlxgqdqfohcqgzfbetltfoylynwpkyo.njm
        • Size 3KB
        • SHA256 b6d2680be66ba3fbf919f5206358b110e699d02dda29272ab533893022f9929b
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ravthzoexqlazauqpb.exe
        • Path C:\Windows\SysWOW64\ravthzoexqlazauqpb.exe
        • Size 532KB
        • SHA256 4181ec24509fde4a5caf4365621fc8566782a855f1cb32a5a53f73875565b445
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        iqkhulzogysgeexsq.exe
        • Path C:\Windows\iqkhulzogysgeexsq.exe
        • Size 532KB
        • SHA256 6bc87b3e0aeaf90c419c654decb7d772ec65ed5169e89a1c17df0edfd8fa828f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download